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CN119675153A - A multi-resource collaborative control method, system, device and medium - Google Patents

A multi-resource collaborative control method, system, device and medium Download PDF

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Publication number
CN119675153A
CN119675153A CN202411653814.5A CN202411653814A CN119675153A CN 119675153 A CN119675153 A CN 119675153A CN 202411653814 A CN202411653814 A CN 202411653814A CN 119675153 A CN119675153 A CN 119675153A
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China
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section
control
power generation
frequency modulation
cooperative
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CN202411653814.5A
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Chinese (zh)
Inventor
李娜
张强
孙运涛
刘建涛
徐鹏
李玉敦
徐征
杨科
王毅
张凯锋
袁堃
刘萌
刘勇
庞涛
吴继平
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Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
State Grid Corp of China SGCC
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Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
State Grid Corp of China SGCC
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Priority to CN202411653814.5A priority Critical patent/CN119675153A/en
Publication of CN119675153A publication Critical patent/CN119675153A/en
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Abstract

The invention belongs to the technical field of dispatching automation systems, and discloses a multi-resource cooperative regulation and control method, a system, equipment and a medium, wherein the method comprises the steps of generating frequency modulation cooperative control information, peak regulation cooperative control information and section cooperative control information; the control instruction of the conventional and energy-storage automatic power generation control object is calculated and generated according to the frequency modulation cooperative control information and the section cooperative control information, the control instruction of the new energy source automatic power generation control object is calculated and generated based on the peak regulation cooperative control information and the section cooperative control information, the regulation and control of the pumping and accumulating unit, the thermal power unit and the energy storage power station are completed based on the control instruction of the conventional and energy-storage automatic power generation control object, and the regulation and control of the new energy station are realized according to the control instruction of the new energy source automatic power generation control object. The invention can simultaneously meet the control targets of multiple scenes such as peak shaving, frequency modulation and section control of the power grid, improves the utilization efficiency of resources and the overall regulation and control effect, and meets the running regulation and control requirements of the power grid under the novel power system.

Description

Multi-resource cooperative regulation and control method, system, equipment and medium
Technical Field
The invention relates to the technical field of dispatching automation systems, in particular to a multi-resource cooperative regulation and control method, a system, equipment and a medium.
Background
Along with the continuous improvement of the permeability of new energy, the fluctuation and the uncertainty of the new energy bring great challenges to the scheduling operation and the control of a novel power system, various resource regulation characteristics such as thermal power, pumping and storage, energy storage, new energy and the like are required to be fully exerted, and the multi-scene regulation and control requirements such as power grid peak regulation, frequency modulation and section control are met. At present, the construction modes of the automatic power generation control functions of various resources such as thermal power, energy storage, new energy and the like are different, and are mostly independent construction, a unified coordination control strategy is lacked, the coordination relation among various types of adjustable resources in different scenes is not fully considered, and the promotion effect of the cooperative regulation and control of the multiple resources on the whole regulation capacity and regulation effect is not exerted.
Therefore, how to provide a multi-type resource collaborative regulation and control method aiming at multi-regulation and control scenes, comprehensively coordinates multi-element control resources such as thermal power, pumped storage, energy storage, new energy and the like, and ensures safe and stable operation of a novel power system is a problem to be solved at present.
Disclosure of Invention
The embodiment of the invention provides a multi-resource cooperative regulation and control method, a system, equipment and a medium, which are used for solving the technical problems in the prior art.
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of an embodiment of the present invention, a method and a system for multi-resource collaborative regulation are provided.
In one embodiment, the multi-resource collaborative regulation method includes:
Calculating the total frequency modulation requirement and the total new energy peak regulation requirement based on a pre-constructed multi-resource hierarchical control architecture, and generating frequency modulation cooperative control information and peak regulation cooperative control information;
Calculating and generating a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information;
Based on the control instruction of the conventional and energy storage automatic power generation control object, the regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station are completed, and the regulation and control of the new energy station are realized according to the control instruction of the new energy automatic power generation control object.
In one embodiment, the multi-resource hierarchical control architecture includes a cooperative regulation layer and a resource regulation layer;
The cooperative control layer coordinates peak regulation, frequency modulation and section control targets, generates cooperative control information and realizes cooperative control of the resource regulation layer;
The resource regulation and control layer is composed of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, and control instructions of different types of resources are respectively generated according to cooperative control information and issued to a station.
In one embodiment, after building the multi-resource hierarchical control architecture, further comprising:
Based on conventional automatic power generation control, new energy automatic power generation control and energy storage automatic power generation control, independent modeling of different types of adjustment resources is realized, and control modes are respectively set according to regulation and control requirements;
according to different types of resource characteristics and regulation scenes, respectively setting model association relations and control modes of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module;
and respectively calculating adjustable information of various resources under different scenes by using a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, wherein the adjustable information comprises frequency modulation information of a frequency modulation group, new energy peak regulation information of a peak regulation group and section control information under a section.
In one embodiment, calculating the aggregate demand for frequency modulation and generating the cooperative control information for frequency modulation includes:
Selecting a corresponding calculation formula according to the regional control mode, and calculating regional control deviation to obtain the frequency modulation total demand;
In the tie line and frequency deviation control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)+(I-I0)
in the constant frequency control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)
in the constant tie-line exchange power control mode, the calculation formula of the regional control deviation is as follows:
ACE=(I-I0)
Wherein ACE is regional control deviation, B is regional frequency deviation coefficient, f is actual measurement system frequency, f 0 is rated frequency, I is the sum of actual active power of regional tie lines, and I 0 is regional plan net exchange power;
dividing an operation area in sections based on the size of the area control deviation, setting distribution coefficients of thermal power frequency modulation requirements and energy storage frequency modulation requirements in sections, determining the thermal power frequency modulation requirements and the energy storage frequency modulation requirements based on the distribution coefficients and the area control deviation, generating frequency modulation cooperative control information, and transmitting the frequency modulation cooperative control information to a conventional automatic power generation control module and an energy storage automatic power generation control module;
the calculation formula of the thermal power frequency modulation requirement is as follows:
Rp＝-kP*ACE
the calculation formula of the energy storage frequency modulation requirement is as follows:
Re＝-ke*ACE
Wherein R p is a thermal power frequency modulation demand, R e is an energy storage frequency modulation demand, k p is a distribution coefficient of the thermal power frequency modulation demand, and k e is a distribution coefficient of the energy storage frequency modulation demand;
calculating the total peak shaving demand of the new energy and generating peak shaving cooperative control information comprises the following steps:
When the standby under the whole-network frequency modulation is lower than a set threshold value or the standby under the thermal power frequency modulation is lower than the set threshold value, calculating the total new energy peak regulation demand based on a new energy peak regulation demand calculation formula, generating peak regulation cooperative control information according to the total new energy peak regulation demand, and sending the peak regulation cooperative control information to a new energy power generation control module;
the calculation formula of the new energy peak regulation requirement is as follows:
r New energy peak regulation =standby-standby threshold value under thermal power frequency modulation in-situ
Wherein R New energy peak regulation is the total peak regulation requirement of new energy.
In one embodiment, calculating the section control requirement according to the section operation condition and generating the section cooperative control information includes:
acquiring section heavy overload state information and section quota, and starting forbidden upper control or correction control when the section is heavy overload;
the section control method comprises the steps of starting control when a section is reloaded, generating section cooperative control information of a reloaded section and a section control zone bit, and sending the section cooperative control information to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy automatic power generation control module;
when the section is overloaded, the calculation formula of the section correction requirement in correction control is as follows:
Rsec＝(1-δ％)*Plmt-Psec,t
Wherein R sec is the cross section out-of-limit correction quantity, delta is the reserved safety margin, P sec,t is the actual power flow of the cross section at the moment t, and P lmt is the cross section limit;
Judging whether only one resource type exists under the section based on the association relation between the section and the control object, if so, the resource type bears the section correction requirement, if not, the section correction requirement allocation is executed, the section cooperative control information is generated, and the section cooperative control information is sent to a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module.
In one embodiment, the profile correction demand allocation is performed, the profile cooperative control information is generated, and the profile cooperative control information is sent to a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, including:
When the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is lower than a preset threshold value, the section correction requirement is borne by a new energy station under the section, and the section cooperative control information of the out-of-limit section and the out-of-limit section correction requirement is generated and sent to a new energy source automatic power generation control module;
When the standby under the frequency modulation of the whole network and/or the standby under the frequency modulation of the thermal power is higher than a threshold value, distributing the section correction requirement according to the area control deviation direction;
Wherein, distributing the section correction demand according to the regional control deviation direction includes:
When the frequency modulation direction is the same as the section correction demand direction, the section correction demand is borne by the section down frequency modulation resource, the section cooperative control information of the out-of-limit section and the section correction demand in the same direction zone bit is generated, and the section cooperative control information is sent to a conventional automatic power generation control module and an energy storage automatic power generation control module;
And when the frequency modulation direction is opposite to the section correction demand direction, judging whether the section correction demand is smaller than the minimum adjustment amount of beta, wherein beta is the extraction and storage correction coefficient, if so, sequentially distributing according to the sequence of thermal power, energy storage and new energy according to the section down equivalent step length until the section correction demand is met, otherwise, sequentially distributing according to the sequence of the extraction and storage, thermal power, energy storage and new energy according to the section down equivalent step length until the section correction demand is met, generating out-of-limit section, section correction demand reverse zone bit and section cooperative control information of the section correction demands borne by various resources, and transmitting to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy automatic power generation control module.
In one embodiment, the calculating and generating the control command of the conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information, and calculating and generating the control command of the new energy automatic power generation control object based on the peak regulation cooperative control information and the section cooperative control information comprises the following steps:
the conventional automatic power generation control module and the energy storage automatic power generation control module execute the section cooperative control processing according to the section cooperative control information, and allocate thermal power frequency modulation demands to each thermal power unit by combining the frequency modulation cooperative control information and the frequency modulation allocation priority until the limit constraint of a control object after the section cooperative control processing is met;
The new energy automatic power generation control module executes section cooperative control processing according to the section cooperative control information, deducts the executed adjustment quantity in the out-of-limit section correction from the new energy peak regulation demand according to the peak regulation cooperative control information, eliminates the control object which is born with the out-of-limit correction, and sequentially distributes the down regulation step length to the rest control objects according to the peak regulation priority level until the new energy peak regulation demand is met;
wherein, conventional automatic power generation control module and energy storage automatic power generation control module carry out section cooperative control processing according to section cooperative control information includes:
When the control device is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, updating the upper limit of adjustment of the control object under the section to be the current real-time output, and locking the upper adjustment instruction of the control object under the section;
When the cross section is out of limit and the cross section correction requires the same-direction zone bit, the control object frequency modulation allocation priority under the cross section is mentioned to be the highest, and the cross section is adjusted while the frequency modulation requirement is met;
When the cross section is out of limit and the cross section correction requirement is reversed, the cross section correction requirement is borne, sequencing the sensitivity of the cross section according to the control object under the cross section, and sequentially updating the upper limit of adjustment of the control object to be the current real-time output minus one step length, so as to realize the downward adjustment of the control object until the borne cross section correction requirement is met;
The new energy automatic power generation control module executes the section cooperative control processing according to the section cooperative control information, and comprises the following steps of:
When the control object is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, updating the upper limit of adjustment of the control object under the section to be the current real-time output, and locking the upper adjustment instruction of the control object under the heavy-load section;
When the control object is positioned on the out-of-limit section and bears the out-of-limit section correction requirement, sequentially distributing a down-regulating step length to the control object under the section according to the peak regulation priority of the new energy station until the borne out-of-limit section correction requirement is met.
According to a second aspect of the embodiment of the invention, a multi-resource cooperative regulation and control system is provided.
In one embodiment, the multi-resource collaborative regulation system comprises:
the cooperative control information generation module is used for calculating the total frequency modulation requirement and the total new energy peak regulation requirement based on a multi-resource hierarchical control architecture constructed in advance and generating frequency modulation cooperative control information and peak regulation cooperative control information;
The control instruction generation module is used for calculating and generating control instructions of conventional and energy-storage automatic power generation control objects according to the frequency modulation cooperative control information and the section cooperative control information;
the cooperative regulation and control module is used for completing regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station based on control instructions of conventional and energy storage automatic power generation control objects, and realizing regulation and control of the new energy station according to the control instructions of the new energy automatic power generation control objects.
In one embodiment, the multi-resource hierarchical control architecture comprises a cooperative regulation layer and a resource regulation layer, wherein the cooperative regulation layer is used for comprehensively regulating peak, frequency and section control targets, generating cooperative control information and realizing cooperative control on the resource regulation layer, and the resource regulation layer is composed of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, and respectively generating control instructions of different types of resources according to the cooperative control information and issuing the control instructions to a station.
In one embodiment, the cooperative control information generating module is configured to implement independent modeling of different types of adjustment resources based on conventional automatic power generation control, new energy automatic power generation control and energy storage automatic power generation control after constructing a multi-resource hierarchical control architecture, and set control modes according to adjustment requirements, respectively set model association relations and control modes of the conventional automatic power generation control module, the new energy automatic power generation control module and the energy storage automatic power generation control module according to different types of resource characteristics and adjustment scenes, and respectively calculate adjustable information under different scenes of various resources by using the conventional automatic power generation control module, the new energy automatic power generation control module and the energy storage automatic power generation control module, wherein the adjustable information comprises frequency modulation information of a frequency modulation group, new energy peak regulation information of a peak regulation group and section control information under a section.
In one embodiment, when the cooperative control information generating module calculates the frequency modulation total demand and generates the frequency modulation cooperative control information, a corresponding calculation formula is selected according to the regional control mode, and regional control deviation is calculated to obtain the frequency modulation total demand; dividing an operation area in sections based on the size of the area control deviation, setting distribution coefficients of thermal power frequency modulation requirements and energy storage frequency modulation requirements in sections, determining the thermal power frequency modulation requirements and the energy storage frequency modulation requirements based on the distribution coefficients and the area control deviation, generating frequency modulation cooperative control information, and transmitting the frequency modulation cooperative control information to a conventional automatic power generation control module and an energy storage automatic power generation control module;
In the tie line and frequency deviation control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)+(I-I0)
in the constant frequency control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)
in the constant tie-line exchange power control mode, the calculation formula of the regional control deviation is as follows:
ACE=(I-I0)
The calculation formula of thermal power frequency modulation requirement is:
Rp＝-kP*ACE
the calculation formula of the energy storage frequency modulation requirement is as follows:
Re＝-ke*ACE
Wherein ACE is regional control deviation, B is regional frequency deviation coefficient, f is actual measurement system frequency, f 0 is rated frequency, I is the sum of actual active power of regional tie lines, I 0 is regional planned net exchange power, R p is thermal power frequency modulation demand, R e is energy storage frequency modulation demand, k p is distribution coefficient of thermal power frequency modulation demand, and k e is distribution coefficient of energy storage frequency modulation demand;
When the standby is lower than a set threshold value under the whole network frequency modulation or lower than the set threshold value under the thermal power frequency modulation, calculating the new energy peak shaving total demand based on a new energy peak shaving demand calculation formula by the cooperative control information generation module, generating peak shaving cooperative control information according to the new energy peak shaving total demand, and sending the peak shaving cooperative control information to the new energy power generation control module;
the calculation formula of the new energy peak regulation requirement is as follows:
r New energy peak regulation =standby-standby threshold value under thermal power frequency modulation in-situ
Wherein R New energy peak regulation is the total peak regulation requirement of new energy.
In one embodiment, the cooperative control information generating module obtains the section overload state information and the section quota when calculating the section control requirement according to the section operation condition and generating the section cooperative control information, and starts the forbidden upper control or the correction control when the section is overloaded; the section control method comprises the steps of starting control when a section is reloaded, generating section cooperative control information of a reloaded section and a section control zone bit, and sending the section cooperative control information to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy automatic power generation control module; judging whether only one resource type exists under the section based on the association relation between the section and the control object, if so, the resource type bears the section correction requirement, and if not, the section correction requirement allocation is executed;
when the section is overloaded, the calculation formula of the section correction requirement in correction control is as follows:
Rsec＝(1-δ％)*Plmt-Psec,t
Wherein R sec is the correction of the cross section out of limit, delta is the reserved safety margin, P sec,t is the actual power flow of the cross section at the time t, and P lmt is the cross section limit.
In one embodiment, the cooperative control information generating module generates cooperative control information of the cross section when executing the cross section correction requirement allocation, and sends the cooperative control information of the cross section to the conventional automatic power generation control module, the new energy source automatic power generation control module and the energy storage automatic power generation control module, when the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is lower than a preset threshold value, the cross section correction requirement is born by the new energy station under the cross section, the cooperative control information of the cross section exceeding the cross section and the cross section correction requirement is generated, and the cooperative control information of the cross section exceeding the cross section correction requirement is sent to the new energy station under the cross section automatic power generation control module, and the new energy station under the cross section is sequentially adjusted by one step length from high to low according to sensitivity until the cross section correction requirement is met;
When the frequency modulation direction is opposite to the section correction demand direction, judging whether the section correction demand is smaller than beta, pumping and accumulating the minimum modulation amount, and beta is the pumping and accumulating correction coefficient, if yes, sequentially distributing according to the sequence of thermal power, energy accumulation and new energy until the section correction demand is met, if not, sequentially distributing according to the sequence of pumping and accumulating, thermal power, energy accumulation and new energy until the section correction demand is met, sequentially distributing according to the sequence of pumping and accumulating, energy accumulation and new energy until the section correction demand is met, and generating section cooperative control information of the section correction demand borne by the reverse mark of the section correction demand and various resources, and starting from the conventional automatic power generation control module, the energy accumulation automatic power generation control module and the new energy.
In one embodiment, the control instruction generation module calculates and generates a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information, and when calculating and generating a control instruction of a new energy source automatic power generation control object based on the peak regulation cooperative control information and the section cooperative control information, the conventional automatic power generation control module and the energy-storage automatic power generation control module execute section cooperative control processing according to the section cooperative control information and allocate thermal power frequency modulation demands to each thermal power generating unit by combining the frequency modulation cooperative control information and the frequency modulation allocation priority until the limit constraint of the control object after the section cooperative control processing is met, and the new energy source automatic power generation control module executes the section cooperative control processing according to the section cooperative control information and deducts the adjustment quantity executed in the out-of-limit section correction from the new energy peak regulation demands according to the peak regulation cooperative control information, excludes the control object born with out-of-limit correction, and allocates down-regulation step sizes to the rest control objects in sequence according to the peak regulation priority until the new energy peak regulation demands are met;
When the conventional automatic power generation control module and the energy storage automatic power generation control module execute the cross section cooperative control processing according to the cross section cooperative control information, when the cross section is in a heavy-load cross section and the cross section is forbidden to be provided with a marker bit, the upper limit of the adjustment of the cross section lower control object is updated to be the current real-time output, the upper adjustment instruction of the cross section lower control object is blocked, when the cross section is in an out-of-limit cross section and the cross section correction needs to be the same-direction marker bit, the cross section lower control object frequency modulation allocation priority is increased to the highest, the cross section is adjusted while the frequency modulation needs are met, when the cross section is in the out-of-limit cross section and the cross section correction needs to be reversed marker bit, the sensitivity of the cross section is carried out on the cross section by the cross section lower control object, the upper limit of the adjustment of the control object is updated to be the current real-time output, and one step length is subtracted, and the down adjustment of the control object is realized until the carried cross section correction needs are met;
the new energy automatic power generation control module executes the section cooperative control processing according to the section cooperative control information, when the new energy automatic power generation control module is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, the upper limit of the regulation of the control object under the section is updated to be the current real-time output, the upper regulation instruction of the control object under the heavy-load section is locked, when the new energy automatic power generation control module is positioned on an out-of-limit section and bears the out-of-limit section correction requirement, the control object under the section is sequentially distributed with a down regulation step length according to the peak regulation priority of the new energy station until the borne out-of-limit section correction requirement is met.
According to a third aspect of embodiments of the present invention, a computer device is provided.
In some embodiments, the computer device comprises a memory storing a computer program and a processor implementing the steps of the above method when the processor executes the computer program.
According to a fourth aspect of embodiments of the present invention, a computer-readable storage medium is provided.
In an embodiment, the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the above method.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
The invention provides a multi-type resource collaborative regulation and control method, which establishes a collaborative regulation and control layer and a layered control framework of the resource regulation and control layer, coordinates multi-element control resources such as thermal power, pumped storage, energy storage, new energy and the like through collaborative interaction among layers and modules, realizes collaborative optimization control of multi-element regulation resources, can simultaneously meet multi-scene control targets such as power grid peak regulation, frequency modulation, section control and the like, improves resource utilization efficiency and integral regulation and control effect, and meets power grid operation regulation and control requirements under a novel power system.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a multi-resource coordinated regulation method according to an example embodiment;
FIG. 2 is a block diagram of a multi-resource coordinated regulation system according to an example embodiment;
FIG. 3 is a diagram of a multi-resource cooperative control architecture, shown in accordance with an exemplary embodiment;
FIG. 4 is a flow chart illustrating demand allocation for frequency modulation according to an exemplary embodiment;
FIG. 5 is a flow chart of peak shaver demand assignment, according to an exemplary embodiment;
fig. 6 is a schematic diagram of a computer device, according to an example embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in, or substituted for, those of others. The scope of the embodiments herein includes the full scope of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like herein are used merely to distinguish one element from another element and do not require or imply any actual relationship or order between the elements. Indeed the first element could also be termed a second element and vice versa. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a structure, apparatus or device comprising the element. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other.
The terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description herein and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanically or electrically coupled, may be in communication with each other within two elements, may be directly coupled, or may be indirectly coupled through an intermediary, as would be apparent to one of ordinary skill in the art.
Herein, unless otherwise indicated, the term "plurality" means two or more.
Herein, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents A or B.
Herein, the term "and/or" is an association relation describing an object, meaning that three relations may exist. For example, A and/or B, represent A or B, or three relationships of A and B.
It should be understood that, although the steps in the flowchart are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of other steps or other steps.
The various modules in the apparatus or system of the present application may be implemented in whole or in part in software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
FIG. 1 illustrates one embodiment of a multi-resource coordinated regulation method of the present invention.
In this alternative embodiment, the multi-resource collaborative regulation method includes:
Step S101, calculating the total frequency modulation requirements and the total peak shaving requirements of new energy based on a multi-resource hierarchical control architecture constructed in advance, and generating frequency modulation cooperative control information and peak shaving cooperative control information;
Step S103, calculating and generating a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information;
Step 105, based on the control instruction of the conventional and energy storage automatic power generation control object, the regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station are completed, and the regulation and control of the new energy station are realized according to the control instruction of the new energy automatic power generation control object.
FIG. 2 illustrates one embodiment of a multi-resource coordinated regulation system of the present invention.
In this alternative embodiment, the multi-resource collaborative regulation system includes:
the cooperative control information generating module 201 is configured to calculate a frequency modulation total demand and a new energy peak shaving total demand based on a multi-resource hierarchical control architecture constructed in advance, and generate frequency modulation cooperative control information and peak shaving cooperative control information;
The control instruction generation module 203 is configured to calculate and generate a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information;
The cooperative regulation and control module 205 is configured to complete regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station based on control instructions of conventional and energy storage automatic power generation control objects, and implement regulation and control of the new energy station according to control instructions of the new energy automatic power generation control objects.
In order to facilitate understanding of the above technical solution of the present invention, the following further describes the above technical solution of the present invention from the viewpoints of architecture and principle, and specifically includes the following steps:
the invention provides a multi-resource collaborative regulation and control method and a system for multiple scenes, which realize multi-class resource collaborative calling meeting the requirements of the multiple regulation and control scenes.
In a first aspect, the present invention provides a multi-scenario-oriented multi-resource collaborative regulation and control method, including the following steps:
Step 1, establishing a multi-resource layered control architecture comprising a cooperative regulation layer and a resource regulation layer, realizing independent modeling of different types of regulation resources through conventional AGC (automatic power generation control), new energy AGC and energy storage AGC of the resource regulation layer, and setting control modes according to regulation requirements.
1. Multi-resource hierarchical control overall architecture
The multi-resource cooperative control overall framework comprises a cooperative control layer and a resource control layer, wherein the cooperative control layer is used for comprehensively regulating control targets such as peaks, frequency modulation and sections and generating cooperative control information to realize cooperative control of the resource control layer, the resource control layer is composed of a conventional AGC (automatic gain control), a new energy AGC and an energy storage AGC, and control instructions of different types of resources are respectively generated according to the cooperative control information generated by the cooperative control layer and are issued to a station. The novel energy storage system comprises a conventional AGC (automatic gain control) and an energy storage AGC, wherein the conventional AGC realizes modeling and control of conventional resources such as thermal power, hydropower, nuclear power and the like, the new energy AGC realizes modeling and control of wind power and photovoltaic resources, and the energy storage AGC realizes modeling and control of novel energy storage resources.
2. Resource control layer control model
The conventional AGC, the new energy AGC and the energy storage AGC control model all adopt control objects and group two-layer models:
(1) The control object is the minimum unit for monitoring and controlling various resources, the dimension of various resource control object models supports the single-machine modeling and the full-site modeling mode, and in general, thermal power, hydroelectric power, nuclear power and pumped storage are modeled in a single-machine mode, and new energy and stored energy are modeled in a site mode.
(2) The group is used for classifying the control objects according to the regulation and control scenes, so that the aggregation of the operation information of the control objects in the group is realized, and the control objects participate in the distribution of the regulation requirements under the corresponding scenes of the cooperative regulation and control layers. The groups can be flexibly set corresponding to different modulation scenes, and are generally set as a peak regulation group N, a frequency modulation group N and a test group N. The peak regulation group comprises control objects which participate in peak regulation control, the frequency modulation group comprises control objects which participate in frequency modulation control, and the test group comprises control objects which do not participate in cooperative control due to performance test, abnormality and the like. All resources are in default participation in section control without setting a separate group. The group setting can be flexibly increased if other control demands exist.
The conventional AGC, the new energy AGC and the energy storage AGC also model the information required by the section control, and mainly comprise the association relation of the section and the control object, the section control margin, the sensitivity of the active output of the control object to the section and the like.
3. Resource control layer control mode
The control modes of the conventional AGC, the new energy AGC and the energy storage AGC corresponding to the two layers of models comprise a group control mode and a control object control mode.
(1) Group control mode
The group control mode comprises frequency modulation control, peak regulation control, plan tracking, manual point setting, free power generation, rated charge, rated discharge and the like. The adjustment requirements in different control modes are calculated in different manners. The group control mode in each AGC is set independently according to the resource characteristics and the regulation and control scene:
a) The conventional AGC group control mode can be set up such as frequency modulation control, schedule tracking, manual set-up points, etc.
B) The new energy AGC group control mode can be set up such as peak regulation control, manual setting point, free power generation, etc.
C) The control mode of the energy storage AGC group can be set up such as frequency modulation control, plan tracking, manual setting point, rated charge, rated discharge and the like.
(2) Control mode of control object
The control object control mode comprises automatic, local and pause. The control mode is an automatic control object following the group control mode, the control mode participates in the group control according to the control strategy corresponding to the group control mode, and the control mode is that the local and suspended control objects do not participate in the group instruction distribution.
And 2, respectively setting a model association relation and a control mode in the conventional AGC, the new energy AGC and the energy storage AGC according to different types of resource characteristics and regulation scenes. The conventional AGC, the new energy AGC and the energy storage AGC respectively calculate adjustable information of various resources under different scenes, and the adjustable information is obtained in real time by a cooperative regulation and control layer.
1. Conventional AGC, new energy AGC and energy storage AGC model association relation and control mode setting
In the conventional AGC, the new energy AGC and the energy storage AGC, various adjusting resources respectively participate in different adjusting and controlling scenes through model association setting and control mode setting:
(1) The adjustment resources participating in frequency modulation are placed under a single frequency modulation group as a control object, the group control mode is set as frequency modulation control, and the control object control mode is set as automatic.
(2) And (3) setting the adjustment resources for peak shaving by tracking the market clearing results of a planned output curve, an electric energy market/a peak shaving auxiliary service market and the like as control objects under a single peak shaving group, wherein the group control mode is set to be planned tracking, and the control object control mode is set to be automatic.
(3) And placing the new energy stations participating in peak shaving as control objects under an independent peak shaving group according to the real-time absorption capacity of the power grid, wherein the group control mode is set to be peak shaving control, and the control object control mode is set to be automatic.
(4) And the adjustment resources participating in the section correction are associated through the section model.
2. Adjustable information obtained in real time by cooperative regulation and control layer
The cooperative regulation and control layer acquires the following information from the resource regulation and control layer in real time:
(1) The conventional AGC and the energy storage AGC respectively calculate the frequency modulation information such as the adjustment range of the frequency modulation group, the real-time output, the standby frequency modulation and the like.
(2) The new energy AGC calculates the new energy peak regulation information such as the regulation range of the peak regulation group, the real-time output and the like.
(3) The conventional AGC, the new energy AGC and the energy storage AGC respectively calculate section control information such as equivalent down-regulating step length under each section of various resources, wherein the equivalent down-regulating step length under the section is an effective regulating step length for section regulation after the sensitivity and the actual down-regulating step length are converted.
And step 3, calculating the frequency modulation total demand by the cooperative control layer, distributing the frequency modulation total demand to various resources according to a frequency modulation demand distribution strategy, generating frequency modulation cooperative control information, and sending the frequency modulation cooperative control information to a conventional AGC (automatic gain control) and an energy storage AGC.
1. Frequency modulation total demand calculation
The frequency modulation requirement is embodied as a regional control offset ACE, supporting the following three regional control modes to calculate ACE.
(1) Tie-line and frequency deviation control (TBC) modes, ace=10b (f-f 0)+(I-I0), where B is the regional frequency deviation coefficient (MW/0.1 Hz), f is the measured system frequency (Hz), f 0 is the nominal frequency (Hz), I is the sum of the regional tie-line actual active power (MW), I 0 is the regional planned net-exchange power (MW), tie-line actual active power and regional planned net-exchange power out is positive, and the acceptance is negative.
(2) Constant frequency control (FFC) mode ace=10b×f-f 0, where B is the regional frequency deviation coefficient (MW/Hz), f is the measured system frequency (Hz), and f 0 is the nominal frequency (Hz).
(3) Constant tie-line switching power control (FTC) mode, ace= (I-I 0), where I is the sum of the regional tie-line actual active power (MW), I 0 is the regional planned net switching power (MW), the tie-line actual active power and the regional planned net switching power out are positive, and the ingress is negative.
2. FM aggregate demand allocation
As shown in fig. 4, the frequency modulation total demand is distributed among the thermal power generating units and the energy storage power stations participating in frequency modulation. And setting the distribution coefficients of the thermal power frequency modulation requirement and the energy storage frequency modulation requirement as k p、ke respectively, wherein the frequency modulation requirement distributed to the thermal power is R p＝-kP ACE, and the frequency modulation requirement distributed to the energy storage is R e＝-ke ACE.
Threshold values ACE1 and ACE2 (ACE 1 < |ACE2|) are respectively set, an operation area is divided into a normal area (ACE < |ACE1|), a secondary emergency area (ACE 1 < |ACE < |ACE2|) and an emergency area (ACE| > ACE2|) according to the size of the ACE, and different types of resources are called in a partitioning mode.
(1) In the normal region, the thermal power generating unit bears the frequency modulation responsibility, and k p＝1,ke =0 can be set.
(1) And in the secondary emergency area, energy storage assists the thermal power generating unit to participate in frequency modulation responsibility, and k p＝0.6,ke =0.4 can be set.
(3) Emergency zone, mainly using energy storage to exert quick regulation action to pull ACE back to normal zone, and k p＝0.3,ke =0.7 can be set.
The specific setting of k p、ke can be adjusted according to the actual frequency modulation capacity of thermal power and energy storage.
The cooperative control layer sends the generated frequency modulation cooperative control information, namely the thermal power frequency modulation requirement k p and the energy storage frequency modulation requirement k e, to the conventional AGC and the energy storage AGC respectively.
And step 4, the cooperative control layer calculates the total peak regulation requirement of the new energy, generates peak regulation cooperative control information and sends the information to the AGC of the new energy.
As shown in fig. 5, the thermal power, the pumping storage and the energy storage participate in peak shaving according to the clear value or the planned value of the electric energy market, and the real-time peak shaving requirement is shared by new energy sources due to the prediction deviation. And the new energy peak regulation requirement is generated according to standby under the whole network frequency modulation or/and standby under the thermal power frequency modulation, and when the standby under the whole network frequency modulation is lower than a set threshold value K1 or the standby under the thermal power frequency modulation is lower than a set threshold value K2, the new energy participates in peak regulation. The calculation formula of the new energy peak shaving demand is as follows:
r New energy peak regulation =standby-standby threshold value under thermal power frequency modulation in-situ
And the cooperative control layer transmits the generated peak shaving cooperative control information, namely the total new energy peak shaving demand R New energy peak regulation , to the new energy AGC.
And 5, calculating the section control requirement according to the section operation condition by the cooperative control layer, generating section cooperative control information, and transmitting the section cooperative control information to the conventional AGC, the energy storage AGC and the new energy AGC.
1. Section control requirements
The cooperative control layer acquires the section heavy overload state information and the section quota from the section monitoring module, and when the section is heavy overloaded, section control is started, wherein the section control comprises the following two types:
(1) And (3) controlling the upper forbidden bit under the heavy-load state of the section, namely generating a heavy-load section upper forbidden bit by the cooperative control layer, wherein the heavy-load section upper forbidden bit is used for locking all control instructions in the deteriorated section state, namely locking an upper regulating instruction of a control object under the section.
(2) And (3) correcting control under the overload state of the section, namely generating a section correcting requirement by a cooperative control layer, wherein the calculation formula is as follows:
R sec＝(1-δ％)*Plmt-Psec,t, wherein R sec is a cross section out-of-limit correction amount, delta is a reserved safety margin, P sec,t is an actual power flow of a cross section at a time t, and P lmt is a cross section limit.
2. Demand distribution for fracture surface correction
The cooperative control layer judges the type of resources under the section according to the association relation of the section and the control object obtained from the conventional AGC, the energy storage AGC and the new energy AGC, and when only one type of resources exist under the section, the type of resources can only bear the correction requirement of the section. As for the same section, if multiple types of resources are involved, the following section correction demand allocation flow is executed:
1) When the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is lower than a threshold value, the section correction requirement is borne by a new energy station under the section, and the cooperative control layer transmits the generated section cooperative control information, namely the out-of-limit section and the out-of-limit section correction requirement, to the new energy AGC. The new energy AGC sequentially adjusts the new energy station under the section by one step length from high to low according to the sensitivity until the section correction requirement is met.
2) When the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is higher than a threshold value, distributing the section correction requirement according to the ACE direction, specifically:
(1) And when the cross section is out of limit and ACE >0, namely the frequency modulation direction is the same as the cross section correction demand direction, the cross section correction demand is borne by the cross section lower frequency modulation resource, and the cooperative control layer transmits the generated cross section cooperative control information, namely out-of-limit cross section and cross section correction demand homodromous zone bit, to the conventional AGC and the energy storage AGC.
(2) Cross section out of limit, ACE <0 simultaneously, when the frequency modulation direction is opposite with the cross section correction demand direction:
And if the section correction requirement < beta > is the minimum pumping and storage quantity (beta is the pumping and storage correction coefficient), sequentially distributing the resources according to the sequence of thermal power, energy storage and new energy, if the equivalent down-regulating step length of the resources with the priority arranged in front is smaller than the section correction requirement, the resources are used for bearing the section correction requirement, otherwise, the resources are used for bearing the section correction requirement according to the equivalent down-regulating step length, and the rest of the resources are distributed to the next type of resources, and the like until the section correction requirement is met.
And if the section correction requirement is larger than beta, the minimum adjustment amount of the pumping storage is that the pumping storage is preferentially adjusted, and then the pumping storage is sequentially distributed according to the sequence of the thermal power, the energy storage and the new energy until the section correction requirement is met.
The cooperative control layer transmits the generated section cooperative control information, namely the out-of-limit section, the section correction demand reverse flag bit and the section correction demands borne by various resources to the conventional AGC, the energy storage AGC and the new energy AGC respectively.
And 6, calculating and generating a control target of a control object by the conventional AGC and the energy storage AGC according to the section cooperative control information and the frequency modulation cooperative control information generated by the cooperative control layer and a set strategy, and respectively issuing control instructions to the pumping and storage power station, the thermal power plant and the energy storage power station.
The conventional AGC and the energy storage AGC perform corresponding processing according to the section cooperative control information generated by the cooperative control layer:
(1) And (3) reloading the section and the section upper forbidden zone bit, namely updating the upper limit of adjustment of the section lower control object into the current real-time output, and locking the upper adjustment instruction of the section lower control object.
(2) The out-of-limit section and section correction require the same-direction zone bit, namely, the control object frequency modulation allocation priority under the section is mentioned to be the highest, and the section is regulated while meeting the frequency modulation requirement.
(3) The cross section correction requirement is that the sensitivity of the cross section is sequenced according to the control object under the cross section, the adjustment upper limit of the control object is updated to be the current real-time output minus one step length in sequence, and the control object is adjusted downwards until the borne cross section correction requirement is met.
And (3) distributing thermal power frequency modulation demands to each thermal power unit according to frequency modulation cooperative control information generated by the cooperative control layer by the conventional AGC and the energy storage AGC and according to frequency modulation distribution priority, and meeting the limit constraint of the control object processed in the steps (1) to (3).
And 7, calculating and generating a control target of a control object by the new energy AGC according to the section cooperative control information and the peak shaving cooperative control information generated by the cooperative control layer and a set strategy, and issuing a control instruction to the new energy station.
The new energy AGC processes according to the section cooperative control information generated by the cooperative control layer:
(1) And (3) reloading the section and the section upper forbidden zone bit, namely updating the upper limit of the section lower control object into the current real-time output, and locking the upper regulating instruction of the heavy-load section lower control object.
(2) And (3) the out-of-limit section and the borne out-of-limit section correction requirements are met by sequentially distributing a down-regulating step length to the under-section control object according to the peak regulation priority of the new energy station until the borne out-of-limit section correction requirements are met.
And (3) the new energy AGC deducts the regulating quantity of the (2) according to the peak regulation cooperative control information generated by the cooperative control layer, deducts the control object for bearing out-of-limit correction, and sequentially distributes a down-regulation step length according to the peak regulation priority level until the new energy peak regulation requirement is met.
Wherein the prioritization factor supports two of:
a) Load factor;
b) Deviation of the actual output force from the planned value.
In a second aspect, as shown in fig. 3, the present invention further provides a multi-resource cooperative control architecture facing multiple scenes, including:
And the cooperative regulation and control module is used for comprehensively regulating the control targets such as peak shaving, frequency modulation and section, realizing cooperative control of the conventional AGC, the new energy AGC and the energy storage AGC submodule and generating cooperative control information.
The conventional AGC module comprises a conventional hydrothermal power unit, a nuclear power unit, a pumping and accumulating unit, a virtual power plant and the like. And performing frequency modulation control according to the frequency modulation cooperative control information, tracking market clearing results such as a planned output curve, an electric energy market/a peak shaving auxiliary service market and the like, and performing section control according to the section cooperative control information.
And the energy storage AGC module is used for controlling the energy storage AGC control object to comprise a novel energy storage power station, controlling the frequency modulation according to the frequency modulation cooperative control information, tracking market clearing results such as a planned output curve, an electric energy market/peak shaving auxiliary service market and the like, and controlling the section according to the section cooperative control information.
The new energy AGC module comprises a new energy AGC control object including a wind power plant, a photovoltaic power station and the like, performs new energy peak regulation control according to manually set targets or peak regulation cooperative control information, tracks market clearing results such as a planned output curve, an electric energy market/peak regulation auxiliary service market and the like, and performs section control according to section cooperative control information.
And the section management module is used for defining the section and providing information such as a section heavy overload state, section quota and the like.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used to store static information and dynamic information data. The network interface of the computer device is used for communicating with an external terminal through a network connection. Which computer program, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be appreciated by those skilled in the art that the structure shown in FIG. 6 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
The invention further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps in the embodiment of the method.
In addition, the invention also provides a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the above-mentioned method embodiments.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc.
The present invention is not limited to the structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (16)

1. The multi-resource cooperative regulation and control method is characterized by comprising the following steps of:
Calculating the total frequency modulation requirement and the total new energy peak regulation requirement based on a pre-constructed multi-resource hierarchical control architecture, and generating frequency modulation cooperative control information and peak regulation cooperative control information;
Calculating and generating a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information;
Based on the control instruction of the conventional and energy storage automatic power generation control object, the regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station are completed, and the regulation and control of the new energy station are realized according to the control instruction of the new energy automatic power generation control object.
2. The multi-resource coordinated regulation method of claim 1, wherein the multi-resource hierarchical control architecture comprises a coordinated regulation layer and a resource regulation layer;
The cooperative control layer coordinates peak regulation, frequency modulation and section control targets, generates cooperative control information and realizes cooperative control of the resource regulation layer;
The resource regulation and control layer is composed of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, and control instructions of different types of resources are respectively generated according to cooperative control information and issued to a station.
3. The multi-resource coordinated regulation method of claim 1, further comprising, after constructing the multi-resource hierarchical control architecture:
Based on conventional automatic power generation control, new energy automatic power generation control and energy storage automatic power generation control, independent modeling of different types of adjustment resources is realized, and control modes are respectively set according to regulation and control requirements;
according to different types of resource characteristics and regulation scenes, respectively setting model association relations and control modes of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module;
and respectively calculating adjustable information of various resources under different scenes by using a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, wherein the adjustable information comprises frequency modulation information of a frequency modulation group, new energy peak regulation information of a peak regulation group and section control information under a section.
4. The multi-resource cooperative regulation method of claim 1, wherein calculating the frequency modulation total demand and generating the frequency modulation cooperative control information comprise:
Selecting a corresponding calculation formula according to the regional control mode, and calculating regional control deviation to obtain the frequency modulation total demand;
In the tie line and frequency deviation control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)+(I-I0)
in the constant frequency control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)
in the constant tie-line exchange power control mode, the calculation formula of the regional control deviation is as follows:
ACE=(I-I0)
Wherein ACE is regional control deviation, B is regional frequency deviation coefficient, f is actual measurement system frequency, f 0 is rated frequency, I is the sum of actual active power of regional tie lines, and I 0 is regional plan net exchange power;
dividing an operation area in sections based on the size of the area control deviation, setting distribution coefficients of thermal power frequency modulation requirements and energy storage frequency modulation requirements in sections, determining the thermal power frequency modulation requirements and the energy storage frequency modulation requirements based on the distribution coefficients and the area control deviation, generating frequency modulation cooperative control information, and transmitting the frequency modulation cooperative control information to a conventional automatic power generation control module and an energy storage automatic power generation control module;
the calculation formula of the thermal power frequency modulation requirement is as follows:
Rp＝-kP*ACE
the calculation formula of the energy storage frequency modulation requirement is as follows:
Re＝-ke*ACE
Wherein R p is a thermal power frequency modulation demand, R e is an energy storage frequency modulation demand, k p is a distribution coefficient of the thermal power frequency modulation demand, and k e is a distribution coefficient of the energy storage frequency modulation demand;
calculating the total peak shaving demand of the new energy and generating peak shaving cooperative control information comprises the following steps:
When the standby under the whole-network frequency modulation is lower than a set threshold value or the standby under the thermal power frequency modulation is lower than the set threshold value, calculating the total new energy peak regulation demand based on a new energy peak regulation demand calculation formula, generating peak regulation cooperative control information according to the total new energy peak regulation demand, and sending the peak regulation cooperative control information to a new energy power generation control module;
the calculation formula of the new energy peak regulation requirement is as follows:
r New energy peak regulation =standby-standby threshold value under thermal power frequency modulation in-situ
Wherein R New energy peak regulation is the total peak regulation requirement of new energy.
5. The multi-resource cooperative control method according to claim 1, wherein calculating the section control requirement according to the section operation condition and generating the section cooperative control information comprises:
acquiring section heavy overload state information and section quota, and starting forbidden upper control or correction control when the section is heavy overload;
the section control method comprises the steps of starting control when a section is reloaded, generating section cooperative control information of a reloaded section and a section control zone bit, and sending the section cooperative control information to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy automatic power generation control module;
when the section is overloaded, the calculation formula of the section correction requirement in correction control is as follows:
Rsec＝(1-δ％)*Plmt-Psec,t
Wherein R sec is the cross section out-of-limit correction quantity, delta is the reserved safety margin, P sec,t is the actual power flow of the cross section at the moment t, and P lmt is the cross section limit;
Judging whether only one resource type exists under the section based on the association relation between the section and the control object, if so, the resource type bears the section correction requirement, if not, the section correction requirement allocation is executed, the section cooperative control information is generated, and the section cooperative control information is sent to a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module.
6. The multi-resource cooperative regulation and control method according to claim 5, wherein the steps of executing the profile correction demand allocation, generating profile cooperative control information, and transmitting the profile cooperative control information to a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, comprise:
When the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is lower than a preset threshold value, the section correction requirement is borne by a new energy station under the section, and the section cooperative control information of the out-of-limit section and the out-of-limit section correction requirement is generated and sent to a new energy source automatic power generation control module;
When the standby under the frequency modulation of the whole network and/or the standby under the frequency modulation of the thermal power is higher than a threshold value, distributing the section correction requirement according to the area control deviation direction;
Wherein, distributing the section correction demand according to the regional control deviation direction includes:
When the frequency modulation direction is the same as the section correction demand direction, the section correction demand is borne by the section down frequency modulation resource, the section cooperative control information of the out-of-limit section and the section correction demand in the same direction zone bit is generated, and the section cooperative control information is sent to a conventional automatic power generation control module and an energy storage automatic power generation control module;
And when the frequency modulation direction is opposite to the section correction demand direction, judging whether the section correction demand is smaller than the minimum adjustment amount of beta, wherein beta is the extraction and storage correction coefficient, if so, sequentially distributing according to the sequence of thermal power, energy storage and new energy according to the section down equivalent step length until the section correction demand is met, otherwise, sequentially distributing according to the sequence of the extraction and storage, thermal power, energy storage and new energy according to the section down equivalent step length until the section correction demand is met, generating out-of-limit section, section correction demand reverse zone bit and section cooperative control information of the section correction demands borne by various resources, and transmitting to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy automatic power generation control module.
7. The method of claim 1, wherein calculating and generating control instructions for conventional and energy-storage automatic power generation control objects based on the frequency modulation cooperative control information and the section cooperative control information, calculating and generating control instructions for new energy-storage automatic power generation control objects based on the peak modulation cooperative control information and the section cooperative control information, comprises:
the conventional automatic power generation control module and the energy storage automatic power generation control module execute the section cooperative control processing according to the section cooperative control information, and allocate thermal power frequency modulation demands to each thermal power unit by combining the frequency modulation cooperative control information and the frequency modulation allocation priority until the limit constraint of a control object after the section cooperative control processing is met;
The new energy automatic power generation control module executes section cooperative control processing according to the section cooperative control information, deducts the executed adjustment quantity in the out-of-limit section correction from the new energy peak regulation demand according to the peak regulation cooperative control information, eliminates the control object which is born with the out-of-limit correction, and sequentially distributes the down regulation step length to the rest control objects according to the peak regulation priority level until the new energy peak regulation demand is met;
wherein, conventional automatic power generation control module and energy storage automatic power generation control module carry out section cooperative control processing according to section cooperative control information includes:
When the control device is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, updating the upper limit of adjustment of the control object under the section to be the current real-time output, and locking the upper adjustment instruction of the control object under the section;
When the cross section is out of limit and the cross section correction requires the same-direction zone bit, the control object frequency modulation allocation priority under the cross section is mentioned to be the highest, and the cross section is adjusted while the frequency modulation requirement is met;
When the cross section is out of limit and the cross section correction requirement is reversed, the cross section correction requirement is borne, sequencing the sensitivity of the cross section according to the control object under the cross section, and sequentially updating the upper limit of adjustment of the control object to be the current real-time output minus one step length, so as to realize the downward adjustment of the control object until the borne cross section correction requirement is met;
The new energy automatic power generation control module executes the section cooperative control processing according to the section cooperative control information, and comprises the following steps of:
When the control object is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, updating the upper limit of adjustment of the control object under the section to be the current real-time output, and locking the upper adjustment instruction of the control object under the heavy-load section;
When the control object is positioned on the out-of-limit section and bears the out-of-limit section correction requirement, sequentially distributing a down-regulating step length to the control object under the section according to the peak regulation priority of the new energy station until the borne out-of-limit section correction requirement is met.
8. A multi-resource coordinated regulation and control system, comprising:
the cooperative control information generation module is used for calculating the total frequency modulation requirement and the total new energy peak regulation requirement based on a multi-resource hierarchical control architecture constructed in advance and generating frequency modulation cooperative control information and peak regulation cooperative control information;
The control instruction generation module is used for calculating and generating control instructions of conventional and energy-storage automatic power generation control objects according to the frequency modulation cooperative control information and the section cooperative control information;
the cooperative regulation and control module is used for completing regulation and control of the pumping and storage unit, the thermal power unit and the energy storage power station based on control instructions of conventional and energy storage automatic power generation control objects, and realizing regulation and control of the new energy station according to the control instructions of the new energy automatic power generation control objects.
9. The multi-resource cooperative regulation and control system according to claim 8, wherein the multi-resource layered control architecture comprises a cooperative regulation and control layer and a resource regulation and control layer, wherein the cooperative regulation and control layer is used for comprehensively regulating peak, frequency and section control targets, generating cooperative control information and realizing cooperative control of the resource regulation and control layer, and the resource regulation and control layer is composed of a conventional automatic power generation control module, a new energy automatic power generation control module and an energy storage automatic power generation control module, and respectively generating control instructions of different types of resources according to the cooperative control information and issuing the control instructions to a station.
10. The multi-resource collaborative regulation and control system according to claim 8, wherein the collaborative control information generation module is used for realizing independent modeling of different types of regulation resources based on conventional automatic power generation control, new energy automatic power generation control and energy storage automatic power generation control after constructing a multi-resource hierarchical control architecture, setting control modes according to regulation and control requirements, setting model association relations and control modes of the conventional automatic power generation control module, the new energy automatic power generation control module and the energy storage automatic power generation control module according to different types of resource characteristics and regulation and control scenes, and calculating adjustable information under different scenes of various resources by using the conventional automatic power generation control module, the new energy automatic power generation control module and the energy storage automatic power generation control module, wherein the adjustable information comprises frequency modulation information of a frequency modulation group, new energy peak regulation information of a peak regulation group and section control information under a section.
11. The multi-resource cooperative regulation and control system according to claim 8, wherein the cooperative control information generation module selects a corresponding calculation formula according to a regional control mode and calculates regional control deviation to obtain the cooperative control information when calculating the cooperative control information of frequency modulation, divides an operation region in sections based on the magnitude of the regional control deviation, sets distribution coefficients of thermal power frequency modulation requirements and energy storage frequency modulation requirements in sections, determines the thermal power frequency modulation requirements and the energy storage frequency modulation requirements based on the distribution coefficients and the regional control deviation, generates cooperative control information of frequency modulation, and sends the cooperative control information to the conventional automatic power generation control module and the energy storage automatic power generation control module;
In the tie line and frequency deviation control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)+(I-I0)
in the constant frequency control mode, the calculation formula of the regional control deviation is as follows:
ACE=10B*(f-f0)
in the constant tie-line exchange power control mode, the calculation formula of the regional control deviation is as follows:
ACE=(I-I0)
The calculation formula of thermal power frequency modulation requirement is:
Rp＝-kP*ACE
the calculation formula of the energy storage frequency modulation requirement is as follows:
Re＝-ke*ACE
Wherein ACE is regional control deviation, B is regional frequency deviation coefficient, f is actual measurement system frequency, f 0 is rated frequency, I is the sum of actual active power of regional tie lines, I 0 is regional planned net exchange power, R p is thermal power frequency modulation demand, R e is energy storage frequency modulation demand, k p is distribution coefficient of thermal power frequency modulation demand, and k e is distribution coefficient of energy storage frequency modulation demand;
When the standby is lower than a set threshold value under the whole network frequency modulation or lower than the set threshold value under the thermal power frequency modulation, calculating the new energy peak shaving total demand based on a new energy peak shaving demand calculation formula by the cooperative control information generation module, generating peak shaving cooperative control information according to the new energy peak shaving total demand, and sending the peak shaving cooperative control information to the new energy power generation control module;
the calculation formula of the new energy peak regulation requirement is as follows:
r New energy peak regulation =standby-standby threshold value under thermal power frequency modulation in-situ
Wherein R New energy peak regulation is the total peak regulation requirement of new energy.
12. The multi-resource cooperative regulation and control system according to claim 8, wherein the cooperative control information generation module is used for calculating a section control requirement according to a section operation condition, acquiring section overload state information and a section quota when the section cooperative control information is generated, starting control forbidden or correction control when the section is overloaded, generating section cooperative control information of a heavy load section and a section forbidden flag bit when the section is reloaded, sending the section cooperative control information to a conventional automatic power generation control module, an energy storage automatic power generation control module and a new energy source automatic power generation control module, judging whether only one resource type exists under the section based on the association relation between the section and a control object, if yes, the resource type bears the section correction requirement, if no, executing section correction requirement allocation, generating section cooperative control information, and sending the section cooperative control information to the conventional automatic power generation control module, the new energy source automatic power generation control module and the energy storage automatic power generation control module;
when the section is overloaded, the calculation formula of the section correction requirement in correction control is as follows:
Rsec＝(1-δ％)*Plmt-Psec,t
Wherein R sec is the correction of the cross section out of limit, delta is the reserved safety margin, P sec,t is the actual power flow of the cross section at the time t, and P lmt is the cross section limit.
13. The multi-resource collaborative regulation and control system according to claim 12, wherein the collaborative control information generating module generates the collaborative control information of the cross section when executing the cross section correction demand allocation, and transmits the collaborative control information to the conventional automatic power generation control module, the new energy source automatic power generation control module and the energy storage automatic power generation control module, when the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is lower than a preset threshold value, the cross section correction demand is born by the new energy station under the cross section, the cross section collaborative control information of the out-of-limit cross section and the out-of-limit cross section correction demand is generated, and the collaborative control information is transmitted to the new energy source automatic power generation control module, the new energy station under the cross section is sequentially adjusted by one step length from high to low according to sensitivity by the new energy source automatic power generation control module until the cross section correction demand is met, and when the standby under the whole network frequency modulation and/or the standby under the thermal power frequency modulation is higher than the threshold value, the cross section correction demand is allocated according to the area control deviation direction;
When the frequency modulation direction is opposite to the section correction demand direction, judging whether the section correction demand is smaller than beta, pumping and accumulating the minimum modulation amount, and beta is the pumping and accumulating correction coefficient, if yes, sequentially distributing according to the sequence of thermal power, energy accumulation and new energy until the section correction demand is met, if not, sequentially distributing according to the sequence of pumping and accumulating, thermal power, energy accumulation and new energy until the section correction demand is met, sequentially distributing according to the sequence of pumping and accumulating, energy accumulation and new energy until the section correction demand is met, and generating section cooperative control information of the section correction demand borne by the reverse mark of the section correction demand and various resources, and starting from the conventional automatic power generation control module, the energy accumulation automatic power generation control module and the new energy.
14. The multi-resource cooperative regulation and control system according to claim 8, wherein the control instruction generation module calculates and generates a control instruction of a conventional and energy-storage automatic power generation control object according to the frequency modulation cooperative control information and the section cooperative control information, and when calculating and generating a control instruction of a new energy automatic power generation control object based on the peak regulation cooperative control information and the section cooperative control information, the conventional automatic power generation control module and the energy-storage automatic power generation control module execute the section cooperative control processing according to the section cooperative control information and allocate the thermal power frequency modulation requirement to each thermal power unit by combining the frequency modulation cooperative control information and the frequency modulation allocation priority until the limit constraint of the control object after the section cooperative control processing is met;
When the conventional automatic power generation control module and the energy storage automatic power generation control module execute the cross section cooperative control processing according to the cross section cooperative control information, when the cross section is in a heavy-load cross section and the cross section is forbidden to be provided with a marker bit, the upper limit of the adjustment of the cross section lower control object is updated to be the current real-time output, the upper adjustment instruction of the cross section lower control object is blocked, when the cross section is in an out-of-limit cross section and the cross section correction needs to be the same-direction marker bit, the cross section lower control object frequency modulation allocation priority is increased to the highest, the cross section is adjusted while the frequency modulation needs are met, when the cross section is in the out-of-limit cross section and the cross section correction needs to be reversed marker bit, the sensitivity of the cross section is carried out on the cross section by the cross section lower control object, the upper limit of the adjustment of the control object is updated to be the current real-time output, and one step length is subtracted, and the down adjustment of the control object is realized until the carried cross section correction needs are met;
the new energy automatic power generation control module executes the section cooperative control processing according to the section cooperative control information, when the new energy automatic power generation control module is positioned on a heavy-load section and the section is forbidden to be provided with a zone bit, the upper limit of the regulation of the control object under the section is updated to be the current real-time output, the upper regulation instruction of the control object under the heavy-load section is locked, when the new energy automatic power generation control module is positioned on an out-of-limit section and bears the out-of-limit section correction requirement, the control object under the section is sequentially distributed with a down regulation step length according to the peak regulation priority of the new energy station until the borne out-of-limit section correction requirement is met.
15. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
16. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
CN202411653814.5A 2024-11-19 2024-11-19 A multi-resource collaborative control method, system, device and medium Pending CN119675153A (en)

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