CN105006827A - New energy power station three-layer distributed AGC power control method and new energy power station three-layer distributed AGC power control system - Google Patents
New energy power station three-layer distributed AGC power control method and new energy power station three-layer distributed AGC power control system Download PDFInfo
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Abstract
The invention relates to a new energy power station three-layer distributed AGC power control method, which comprises the steps that a three-layer distributed control system formed by a plant station layer, a sub-array layer and a unit layer is established in a plant station, wherein the sub-array layer comprises new energy sub-arrays, and each new energy sub-array comprises a power generation unit and a sub-array AGC; a plant station AGC of the plant station layer carries out optimized decomposition on a power target issued by a high-level new energy dispatching master station according to the sub-arrays and sends the decomposed power target to each sub-array AGC of the lower-level sub-array layer; and the sub-array AGC of the sub-array layer carries out optimized decomposition on the received sub-array power target according to the power generation units and sends the decomposed sub-array power target to each power generation unit of the lower-level unit layer. The invention further discloses a new energy power station three-layer distributed AGC power control system. According to the invention, a problem of calculation and capacity bottleneck, which is caused by a great number of power generation units, for the plant station AGC of a new energy power station and a series photovoltaic power station in particular, is solved, and the accuracy and the timeliness in power control of the whole plant station AGC are further improved.
Description
Technical field
The present invention relates to generation of electricity by new energy automatic field, particularly relate to a kind of new energy power station Triple distribution AGC Poewr control method of applying in large-scale new forms of energy photovoltaic plant and system.
Background technology
Along with the popularization of the renewable new forms of energy of China especially Photovoltaic new energy generation technology, generation of electricity by new energy capacity and its ratio in whole electrical network are all significantly rising.Because the generation of electricity by new energy such as photovoltaic, wind-powered electricity generation uncertainty of exerting oneself causes peak load regulation network difficulty more outstanding, the demand of current operation of power networks adjustment cannot have been met in the past with the extensive adjustment modes of manual telephone system notice, for the reasonability of the security and stability and adjustment of exerting oneself to new forms of energy that improve electrical network, at present scheduling realizes the automatic adjustment of photovoltaic, wind power output by automatic electricity generation control system (AGC).AGC system in current new forms of energy plant stand is generally two-tiered structure, dispatch layer Dispatching Control System issues the AGC system of power target instruction to plant stand layer, plant stand layer AGC system distributes target power directly to each generator unit such as blower fan or the photovoltaic DC-to-AC converter of elementary layer, realizes generation of electricity by new energy control with this.The program is widelyd popularize along with current new forms of energy, there is the deficiency of the following aspects: 1) in plant stand aspect, when new forms of energy are larger, the large-sized photovoltaic power station of especially employing group string data photovoltaic DC-to-AC converter, the inverter quantity organizing string data photovoltaic plant under identical capacity is 20 ~ 30 times of centralized photovoltaic plant, the group string inverter of 20KW is adopted to calculate with the photovoltaic station of a conventional 100MWp, total inverter number can reach 5000, and the AGC system in current photovoltaic plant is also difficult to meet the calculating in the face of the power of several thousand inverter units issues and demand for control.Computing and the realtime control of photovoltaic station AGC system are difficult to be guaranteed, and define serious architectural framework bottleneck, depend merely on upgrading plant stand AGC system or promote relevant device performance to be difficult to solve the problem.This had both been unfavorable for that new forms of energy plant stand economic operation level improved, and was also unfavorable for that the power grid security economic stability after the access of extensive new forms of energy is run.
The existence of these problem and shortage is unfavorable for that the application of generation of electricity by new energy technology and economic operation level improve, and relevant AGC system function structure needs re-examine to plan, to meet the development new demand of current new forms of energy industry.
Summary of the invention
Technical problem to be solved by this invention is: solve existing new energy power station and especially organize string data photovoltaic plant and be difficult to carry out the problem that effective AGC power controls because of inverter enormous amount, and solving existing new energy power station, especially to organize the power prediction rate of accurateness that string data photovoltaic plant causes because of geographical Meteorological difference not high enough, dispatch to plant stand AGC power dispatching not rationally and the problem of economy.
For realizing above-mentioned technical purpose, the technical scheme that the present invention takes is: new energy power station Triple distribution AGC Poewr control method, it is characterized in that comprising the following steps: in plant stand, set up one by plant stand layer, the Triple distribution hierarchy of control of sub-square formation layer and elementary layer composition; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC; The plant stand AGC unit of described plant stand layer will issue the submatrix AGC of the sub-square formation layer of subordinate after the power control target optimization sent under higher level's new forms of energy scheduling station; The submatrix AGC of sub-square formation layer will issue the generator unit of bottom-ranked unit layer after the power control target optimization received.
As further improved technical scheme of the present invention, the power target optimization that the plant stand AGC received sends by the submatrix AGC unit of described new forms of energy submatrix is decomposed into the power P of each generator unit in these new forms of energy submatrix
i, and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in these new forms of energy submatrix, N>=1, P
ibe the target generated output of i-th generator unit, N≤i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.
As further improved technical scheme of the present invention, plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, and all generator units after submatrix AGC receives and opens/stop remote control command in these new forms of energy submatrix send and open/stop remote control command.
As further improved technical scheme of the present invention, in new forms of energy submatrix, at least one generator unit equipment is as sample generator unit, and described generator unit equipment does not participate in submatrix AGC regulatory function, presses nature maximum generation state always and runs; Remaining generator unit participates in submatrix AGC realtime power remote regulating task.
As further improved technical scheme of the present invention, when higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, when higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.
As further improved technical scheme of the present invention, described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.
As further improved technical scheme of the present invention, also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
For realizing above-mentioned technical purpose, the another kind of technical scheme that the present invention takes is: a kind of new energy power station Triple distribution AGC power control system, is characterized in that: the Triple distribution hierarchy of control be made up of plant stand layer, sub-square formation layer and elementary layer forms; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC; The plant stand AGC unit of described plant stand layer is used for the submatrix AGC issuing the sub-square formation layer of subordinate after the power control target optimization sent under higher level's new forms of energy scheduling station; The submatrix AGC of sub-square formation layer will issue the generator unit of bottom-ranked unit layer after the power control target optimization received.
As further improved technical scheme of the present invention, the power target instruction P that the plant stand AGC received sends by the submatrix AGC unit of described new forms of energy submatrix
foptimal Decomposition is the power P of each generator unit in these new forms of energy submatrix
i, and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in these new forms of energy submatrix, N>=1, P
ibe the target power of i-th generator unit, i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.
As further improved technical scheme of the present invention, plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, and all generator units after submatrix AGC receives and opens/stop remote control command in these new forms of energy submatrix send and open/stop remote control command.
As further improved technical scheme of the present invention, in new forms of energy submatrix, at least one generator unit equipment is as sample generator unit, does not participate in submatrix AGC regulatory function, presses nature maximum generation state always and runs; Remaining generator unit participates in submatrix AGC realtime power remote regulating task.
As further improved technical scheme of the present invention, when higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.
As further improved technical scheme of the present invention, described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.
As further improved technical scheme of the present invention, also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
Tri-layer distributed AGC power hierarchy of control framework in plant stand of the present invention, solve existing new energy power station especially to organize string data photovoltaic plant and be difficult to carry out the problem that effective AGC power controls because of inverter enormous amount, namely in traditional double-layer structure, a dynatron square formation submatrix AGC is increased, the AGC replacing genuine station AGC system to exercise each generator unit in sub-square formation by it calculates and allocating task, and sub-square formation generator unit is integrally accepted plant stand level AGC system power control instruction by it.
After adopting said method and system schema, the invention has the beneficial effects as follows:
1, based on the distributed AGC architectural framework of tri-layer in plant stand, AGC two-tier system controlling calculation bottleneck problem in generator unit situation in enormous quantities in traditional plant stand is solved.
2, be distributed in the intermediate layer submatrix AGC in each sub-square formation, parallel computation can be carried out to plant stand AGC instruction, AGC can be improved and control ageing.
3, intermediate layer submatrix AGC is closer to each generator unit, issues intermediate communication links such as comparing genuine station AGC minimizing switch, control more in time, effectively, contribute to improving control precision the control command of generator unit.
4, submatrix AGC function and Communications Management Units integrated; existing equipment basis does not increase new physical equipment; protection supervisory equipment is become even further with case; the integrated realization of ring exchanger is directly installed in the boosting box type transformer of sub-square formation; save screen cabinet equipment; simplify system, installation and equipment total number, be conducive to the gross investment of saving equipment.
Accompanying drawing explanation
Fig. 1 is new forms of energy plant stand layered distribution type AGC architectural framework.
Fig. 2 is new forms of energy plant stand layered distribution type AGC system network configuration.
Fig. 3 is submatrix AGC application schematic diagram.
Fig. 4 is plant stand AGC and submatrix AGC program flow diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this new energy power station Triple distribution AGC Poewr control method, comprises the following steps: in plant stand, set up one by plant stand layer, the Triple distribution hierarchy of control of sub-square formation layer and elementary layer composition; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC; The plant stand AGC unit of described plant stand layer will issue the submatrix AGC of the sub-square formation layer of subordinate after the power control target optimization sent under higher level's new forms of energy scheduling station; The submatrix AGC of sub-square formation layer will issue the generator unit of bottom-ranked unit layer after the power control target optimization received.
Preferably, the power target optimization that the plant stand AGC received sends by the submatrix AGC unit of described new forms of energy submatrix is decomposed into the power P of each generator unit in these new forms of energy submatrix
i, and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in these new forms of energy submatrix, N>=1, P
ibe the target generated output of i-th generator unit, N≤i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.Plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, and all generator units after submatrix AGC receives and opens/stop remote control command in these new forms of energy submatrix send and open/stop remote control command.In new forms of energy submatrix, at least one generator unit equipment is as sample generator unit, does not participate in submatrix AGC regulatory function, presses nature maximum generation state always and runs; Remaining generator unit participates in submatrix AGC realtime power remote regulating task.When higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.
Described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.Also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
1) as shown in Figure 1, one is set up by plant stand layer in plant stand, the Triple distribution hierarchy of control of sub-square formation layer and elementary layer composition, Automation generation control unit corresponding to each level by the power control target sent under higher level's AGC system step by step Optimal Decomposition issue, until each generator unit of elementary layer.
2) as shown in Figure 2; one is disposed by photovoltaic district optical fiber ring network in new forms of energy plant stand; the network architecture of the two net of internal bus of standing; configuration plant stand AGC system, power prediction system, telemechanical apparatus; and in the boosting case of sub-square formation becomes the integrated apparatus of mounting strap submatrix AGC function; this device possesses submatrix AGC simultaneously, telecommunication management, and case becomes protection observing and controlling and the large function of ring exchanger four.
3) the submatrix AGC module of sub-square formation will by higher level's plant stand AGC system of receiving to the power target instruction P of book square formation
foptimal Decomposition is the power P of each generator unit of book square formation subordinate
i, meet relational expression
(wherein N is the total number of contained generator unit in book square formation), and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control, remote regulating instruction respectively to these generator units (as group string data photovoltaic DC-to-AC converter).
4) suppose that every sub-square formation has the generator unit equipment of same model, in every sub-square formation, select S (S=1 ~ 3) platform generator unit (as group string inverter) as sample generator unit, do not participate in the AGC regulatory function of sub-square formation, press nature maximum generation state always and run; Residue n platform (n=N-S) generator unit participates in AGC realtime power remote regulating task.
5) plant stand level AGC system opens/stops straighforward operation for all generator units in a certain sub-square formation, only need send one for the AGC unit that this sub-square formation is corresponding and open/stop remote control command, the submatrix AGC unit receiving the sub-square formation layer of this instruction each generator unit transmission will open/stop remote control command in the sub-square formation in area under one's jurisdiction.
6) sub-square formation layer AGC control unit module integration becomes in protection supervisory equipment at the boosting case of the sub-square formation of new forms of energy, and this device is also integrated with telecommunication management and ring exchanger module, and is generally directly installed in the boosting case change of sub-square formation.
7) in sub-square formation, the AGC distribution method of the n platform generator unit of current participation AGC power remote regulating can carry out power division according to multiple strategy, and wherein a kind of example strategy works as the gross power instruction P that higher level is handed down to book square formation
fwhen being greater than the gross power of several sample generator units, the merit distributing to the generator unit setting that every platform participation AGC controls is be distributed equally between the generator unit that n platform participates in AGC control after removing sample generator unit power, namely
8) in system, plant stand AGC system accepts a group scheduling AGC control plan for every about 15 minutes, this power planning is carried out breaking up the family with reference to sub-square formation power application situation and is issued in each sub-square formation submatrix AGC by plant stand AGC, each sub-square formation submatrix AGC carries out power calculation distribution according to optional power optimization collocation strategy to power-adjustable generator units such as connected inverters again, and dispensed result is issued to each device talk by remote regulating or remote control command, it calculates the cycle issued with power is can arrange for 15 minutes.
9) in engineering construction, in photovoltaic plant, usually the photovoltaic capacity of every 1 ~ 2MWp is defined as a sub-square formation, the case that boosts is had to become, configure the integration apparatus of a band submatrix AGC function, be directly installed on (function signal as shown in Figure 2) in case change, usually 30 ~ 70 group string inverter or two centralized inverters are connect under, the case of device becomes protection control module and realizes the modules such as the protection observing and controlling of case change, and the communication management module of device can realize forwarding the access that communicates of these inverters and carrying out power division to these inverters respectively with automatic generation control submatrix AGC module, the same model device of some sub-square formations accesses booster stations centering ring network switch after handing in hand and organizing ring, for wind energy turbine set, during every typhoon group of motors boosting case becomes, this equipment is installed, after the same ring of group hand in hand, accesses booster stations centering ring network switch.
10) plant stand AGC system under communication protocol can be IEC60870-5-103 (network edition), IEC60870-5-104, IEC61850 etc., and the communication protocol of sub-square formation to each generator unit below can be IEC60870-5-103, IEC60870-5-104, MODBUS, DNP or IEC61850.
11) plant stand AGC system can have 5 kinds of real power control patterns.1) maximum power control.Photovoltaic plant is in free generation mode, is applicable to electrical network and exerts oneself to photovoltaic and do not limit the period of requirement, realizes the object that electrical network maximizes regenerative resource of dissolving.2) limit value power controls.Photovoltaic plant power limit derives from peak load regulation network or control of section requirement, can take from artificial setting or the automatic dispensed amount of photovoltaic control system, be applicable to electrical network emergency control, peak regulation and control of section.3) tracing control is planned.Photovoltaic generation planning is to be predicted as basic data, and the comprehensive information such as electric power netting safe running constraints, peak load regulation network ability, while photovoltaic is dissolved in maximization, make photovoltaic participate in necessary peak regulation and control of section.4) given period restriction.Meritorious the exerting oneself of photovoltaic plant is restricted to threshold value within the setting period, and the unrestricted period performs original plan, combines the advantage that limit value controls and plans tracing control, with electrical network practical adjustments demand of fitting, is applicable to peak load regulation network and control of section.5) plan increase and decrease controls.Reserve reserve based on photovoltaic generation plan, make photovoltaic possess meritorious throttle up/down capability flexibly.Along with photovoltaic permeability increases, the distributed and concentrated access of photovoltaic will form multibreak and control set.When participating in the out-of-limit timing of section without coupling normal power supplies under partial cut-away, this pattern can be comparatively feasible solution, can be used as the means of electrical network auxiliary security, balance control, is applicable to electrical network emergency control and control of section.
12) photovoltaic submatrix submatrix AGC control strategy is as follows, when the current meritorious planned value that submatrix AGC module receives is less than that square formation is current exerts oneself, perform and reduce square formation and to gain merit the control of exerting oneself, running status and current the gaining merit that can consider each inverter are exerted oneself, except sample is with reference to except inverter, all the other each inverters according to etc. the mode such as nargin or equal proportion, rationally carry out active distribute.A) when the current meritorious planned value received when submatrix AGC module is greater than that square formation is current exerts oneself, performing increases square formation and to gain merit the control of exerting oneself, the running status of each inverter and meritorious predicted value of exerting oneself can be considered, except sample is with reference to except inverter, all the other each inverters according to etc. the mode such as nargin or equal proportion, rationally carry out active distribute.B) submatrix AGC module should be able to limit the meritorious rate of change of exerting oneself of this square formation, possesses 1 minute, 10 minutes regulations speed setting abilities, to fluctuate the larger impact on full station and electrical network to prevent changed power.C) submatrix AGC module possesses and receives the urgent excision that issues of plant stand AGC and to gain merit command function.Under emergency instruction, within the time of specifying, full station is total meritoriously exerts oneself when failing to reach control objectives value, plant stand AGC can adopt the inverter to each square formation to issue stoppage in transit instruction, or the modes such as current collection wiretap are pulled open by remote control command, quick excision is meritorious exerts oneself, and the fast decoupled of submatrix AGC module in charge command adapted thereto issues execution.
13) photovoltaic submatrix submatrix AGC safety interlocking strategy is as follows:
Single inverter locking strategy: when occurring the one of following situation, square formation automatic generation control module (namely case becomes Intelligent protection measuring controller) should be able to identify each fault of converter automatically, and the AGC of this inverter of automatic blocking controls:
1) inverter send block signal or off-grid signal, the AGC of this inverter of locking controls.
2) inverter connects boosting change or the stoppage in transit of current collection line, and the AGC of this inverter of locking controls.
Full square formation locking: when occurring the one of following situation, submatrix automatic generation control module answers automatic blocking entirely to stand AGC/AVC controlling functions, and provides alarm, recovers to regulate after normal.
1) box boosting becomes out of service, the full square formation AGC of locking.
2) photo-voltaic power generation station and grid disconnection, the full square formation AGC of locking.
Embodiment 2
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this new energy power station Triple distribution AGC power control system, the Triple distribution hierarchy of control be made up of plant stand layer, sub-square formation layer and elementary layer forms; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC; The plant stand AGC unit of described plant stand layer is used for the submatrix AGC issuing the sub-square formation layer of subordinate after the power control target optimization sent under higher level's new forms of energy scheduling station; The submatrix AGC of sub-square formation layer will issue the generator unit of bottom-ranked unit layer after the power control target optimization received.
Preferably, the submatrix AGC unit of described new forms of energy submatrix power target instruction P that the plant stand AGC received is sent
foptimal Decomposition is the power P of each generator unit in these new forms of energy submatrix
i, and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in these new forms of energy submatrix, N>=1, P
ibe the target generated output of i-th generator unit, i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.Plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, and all generator units after submatrix AGC receives and opens/stop remote control command in these new forms of energy submatrix send and open/stop remote control command.In new forms of energy submatrix, at least one generator unit equipment is as sample generator unit, does not participate in submatrix AGC regulatory function, presses nature maximum generation state always and runs; Remaining generator unit participates in submatrix AGC realtime power remote regulating task.When higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.Described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.Also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
Other parts such as operation principle, the course of work of this new energy power station Triple distribution AGC power control system are identical with embodiment 1, no longer describe in detail.
Claims (14)
1. a new energy power station Triple distribution AGC Poewr control method, is characterized in that comprising the following steps:
One is set up by plant stand layer, the Triple distribution hierarchy of control of sub-square formation layer and elementary layer composition in plant stand; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC;
The plant stand AGC of described plant stand layer will issue the submatrix AGC of each sub-square formation layer of subordinate after the power target Optimal Decomposition sent under higher level's new forms of energy scheduling station;
The submatrix AGC of sub-square formation layer will issue each generator unit of bottom-ranked unit layer after the sub-square formation power target Optimal Decomposition received.
2. new energy power station Triple distribution AGC Poewr control method according to claim 1, is characterized in that: the power target optimization that the plant stand AGC received sends by the submatrix AGC of described new forms of energy submatrix is decomposed into the power P of each generator unit in these new forms of energy submatrix
i, and issue unit start and stop remote control or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in corresponding new forms of energy submatrix, N>=1, P
ibe the target generated output of i-th generator unit, N≤i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.
3. new energy power station Triple distribution AGC Poewr control method according to claim 1, it is characterized in that: plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, submatrix AGC receives after this opens/stop remote control command and opens/stop remote control command by sending to all generator units in these new forms of energy submatrix.
4. new energy power station Triple distribution AGC Poewr control method according to claim 1, it is characterized in that: in new forms of energy submatrix, at least select a generator unit equipment as sample generator unit, this sample generator unit does not participate in submatrix AGC regulatory function, presses nature maximum generation state always and runs; Remaining generator unit participates in the realtime power remote regulating task of submatrix AGC.
5. new energy power station Triple distribution AGC Poewr control method according to claim 1, is characterized in that: when higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.
6. new energy power station Triple distribution AGC Poewr control method according to claim 1, is characterized in that: described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.
7. new energy power station Triple distribution AGC Poewr control method according to claim 1, is characterized in that: also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
8. a new energy power station Triple distribution AGC power control system, is characterized in that: the Triple distribution hierarchy of control be made up of plant stand layer, sub-square formation layer and elementary layer forms; Described sub-square formation layer comprises at least one new forms of energy submatrix; Described new forms of energy submatrix comprises at least one generation of electricity by new energy unit and a submatrix AGC; The plant stand AGC unit of described plant stand layer is used for the submatrix AGC issuing the sub-square formation layer of subordinate after the power control target Optimal Decomposition sent under higher level's new forms of energy scheduling station; The submatrix AGC of sub-square formation layer will issue the generator unit of bottom-ranked unit layer after the power control target Optimal Decomposition received.
9. new energy power station Triple distribution AGC power control system according to claim 8, is characterized in that: the power target instruction P that the plant stand AGC received sends by the submatrix AGC unit of described new forms of energy submatrix
foptimal Decomposition is the power P of each generator unit in these new forms of energy submatrix
i, and issue command unit start and stop remote control command or cell power remote regulating instruction by remote control and/or remote regulating instruction respectively to each generator unit in these new forms of energy submatrix, wherein,
n is the sum of contained generator unit in these new forms of energy submatrix, N>=1, P
ibe the target generated output of i-th generator unit, i>=1, P
fthe power target instruction of plant stand AGC to target new forms of energy submatrix.
10. new energy power station Triple distribution AGC power control system according to claim 8, it is characterized in that: plant stand AGC sends one for the submatrix AGC of a new forms of energy submatrix and opens/stop remote control command, all generator units after submatrix AGC receives and opens/stop remote control command in these new forms of energy submatrix send and open/stop remote control command.
11. new energy power station Triple distribution AGC power control systems according to claim 8, it is characterized in that: in new forms of energy submatrix, at least one generator unit equipment is as sample generator unit, do not participate in submatrix AGC regulatory function, press nature maximum generation state always and run; Remaining generator unit participates in submatrix AGC realtime power remote regulating task.
12. new energy power station Triple distribution AGC power control systems according to claim 8, is characterized in that: when higher level plant stand AGC is handed down to the gross power instruction P of the submatrix AGC of these new forms of energy submatrix
fwhen being greater than the gross power of sample generator unit, various control strategy is assigned to each generator unit power target value that other participates in submatrix AGC control, wherein including but not limited to use mean allocation strategy, namely at square formation gross power instruction P
fafter deducting sample generated output total in this square formation, be distributed equally between all generator units that this square formation internal reference and AGC control,
wherein P
isetbe the generated output desired value that i-th inverter distribution arrives, P
skmax is the current natural maximum generation power of a kth sample inverter.
13. new energy power station Triple distribution AGC power control systems according to claim 8, is characterized in that: described submatrix AGC is integrated in the Communications Management Units of new forms of energy submatrix.
14. new energy power station Triple distribution AGC power control systems according to claim 8, is characterized in that: also comprise case and become protection supervisory equipment, the change of boosting case and ring exchanger; Described submatrix AGC, Communications Management Units, case become protection supervisory equipment and ring exchanger is integrated into four combined into one apparatus; Described four combined into one apparatus is arranged in the boosting case change of new forms of energy submatrix.
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