CN109286205A - Off-grid adaptive wind turbine control device and method - Google Patents
Off-grid adaptive wind turbine control device and method Download PDFInfo
- Publication number
- CN109286205A CN109286205A CN201811403338.6A CN201811403338A CN109286205A CN 109286205 A CN109286205 A CN 109286205A CN 201811403338 A CN201811403338 A CN 201811403338A CN 109286205 A CN109286205 A CN 109286205A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000003044 adaptive effect Effects 0.000 title claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 33
- 239000001257 hydrogen Substances 0.000 claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 6
- 238000010248 power generation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- H02J3/386—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Control Of Eletrric Generators (AREA)
Abstract
本发明公开了一种离并网自适应的风力发电机组控制装置及方法，该装置包括：风力发电机组、整流模块、离网开关、并网开关、逆变模块、制氢模块和控制模块。风力发电机组与整流模块连接，整流模块与离网开关和制氢模块串联，整流模块与并网开关和逆变模块串联，且离网开关和制氢模块所在的串联支路与并网开关和逆变模块所在的串联支路并联，逆变模块与公共电网连接。控制模块分别与风力发电机组、离网开关和并网开关连接，用于根据风力发电机组的运行状态控制离网开关和并网开关的启闭。本发明的离并网自适应的风力发电机组控制装置及方法，实现风力发电机组离并网状态的自动切换。且在离网模式下，电能直接输送到制氢模块中，提高能源利用率。
The invention discloses an off-grid self-adaptive wind generator set control device and method. The device includes a wind generator set, a rectifier module, an off-grid switch, a grid-connected switch, an inverter module, a hydrogen production module and a control module. The wind turbine is connected with the rectifier module, the rectifier module is connected in series with the off-grid switch and the hydrogen production module, the rectifier module is connected in series with the grid-connected switch and the inverter module, and the series branch where the off-grid switch and the hydrogen production module are located is connected with the grid-connected switch and the inverter module. The series branch where the inverter module is located is connected in parallel, and the inverter module is connected to the public grid. The control module is respectively connected with the wind generator set, the off-grid switch and the on-grid switch, and is used for controlling the opening and closing of the off-grid switch and the on-grid switch according to the operating state of the wind generator set. The off-grid self-adaptive wind power generating set control device and method of the present invention realizes the automatic switching of the off-grid state of the wind power generating set. And in the off-grid mode, electric energy is directly transferred to the hydrogen production module to improve energy utilization.
Description
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of from grid-connected adaptive wind power generating set control
Device and method.
Background technique
Wind power generating set is divided into grid-connected and two kinds of power generation modes of off-network as a kind of generating equipment.Under grid-connect mode, wind
Power generator group is connect with public electric wire net, and the electric energy of generation enters in public electric wire net.Under off-network mode, wind power generating set is direct
It is connect with battery, the electric energy of generation is directly entered in battery without public electric wire net.In order to make the applicable model of wind-driven generator
It encloses relatively wide, it is necessary to provide a kind of from grid-connected integrated wind-driven generator operating mode.
The prior art provides the grid-connected off-network integrated device of micro-capacitance sensor wind-driven generator described as follows: the device includes control
Circuit, rectified three-phase circuit one, rectified three-phase circuit two, DC/DC power supply one, DC/DC power supply two, manual switch and protection electricity processed
Road.Wind-driven generator is connected with rectified three-phase circuit one and battery group, wind-driven generator and manual switch, rectified three-phase circuit
Two, DC/DC power supply two, gird-connected inverter series connection, the series arm and manual switch, three of rectified three-phase circuit one and battery group
Commutating phase circuit two, DC/DC power supply two, gird-connected inverter series arm be connected in parallel, DC/DC power supply one and control circuit and
Protection circuit is separately connected, and DC/DC power supply one and control circuit are respectively coupled to the output end of rectified three-phase circuit one, control electricity
Road is couple on the winding of wind-driven generator.By control manual switch opening and closing, the power generation mode of wind-driven generator is controlled
System.
The inventor finds that the existing technology has at least the following problems:
Under off-network mode, the electric energy that wind-driven generator generates is stored in battery group, and battery is electricity consumption as power supply
Device provides electric energy, and electric energy conversion is inevitable in accumulator charging/discharging process generates loss, and resource utilization is lower.
Summary of the invention
To solve above-mentioned the technical problems existing in the prior art, the present invention provides a kind of from grid-connected adaptive wind-force
Generator set control device and method.Specific technical solution is as follows:
In a first aspect, providing a kind of from grid-connected adaptive wind power generating set control device, described device includes: wind
Power generator group, rectification module, off-network switch, grid-connected switch, inverter module, hydrogen manufacturing module and control module；The wind-force hair
Motor group is connect with the rectification module, and the rectification module is switched with the off-network and the hydrogen manufacturing block coupled in series, described whole
Flow module is connected with the grid-connected switch and the inverter module, and the series connection where off-network switch and the hydrogen manufacturing module
Branch is in parallel with the series arm where the grid-connected switch and the inverter module, and the inverter module and public electric wire net connect
It connects；The control module is connected with the wind power generating set, off-network switch and the grid-connected switch respectively, is used for basis
The operating status of the wind power generating set controls the opening and closing of the off-network switch and the grid-connected switch.
Further, the generator in the wind power generating set is magneto alternator.
Further, the rectification module is three-phase PWM controllable rectifier module.
Further, the inverter module is three-phase PWM inverter module.
Second aspect, the embodiment of the invention provides a kind of from grid-connected adaptive wind power generating set control method, institute
The method of stating includes:
Wind power generating set operation, control module monitor the operating status of the wind power generating set and according to the operations
State determines that the wind power generating set is in grid-connect mode or off-network mode；
When the wind power generating set is in grid-connect mode, the control module disconnects the off-network switch, described
Grid-connected to close the switch, the wind power generating set exports three-phase alternating current, is rectified into direct current, the direct current after rectified module
Electric current is that three-phase alternating current is conveyed to public electric wire net through inverter module inversion through the grid-connected switch；
When the wind power generating set is in off-network mode, the control module closes the switch the off-network, described
Grid-connected switch disconnects, and the wind power generating set exports three-phase alternating current, and direct current is rectified into after the rectification module, described
DC current switchs input hydrogen manufacturing module as the hydrogen manufacturing energy through the off-network.
Further, the DC voltage after being rectified the method also includes: the control module to the rectification module
It is adjusted, so that the DC voltage is adapted with the hydrogen manufacturing module.
Further, the method also includes: the control module is to the alternating current voltage after the inverter module inversion
It is adjusted, so that the alternating current voltage is adapted with the public electric wire net.
The major advantage of technical solution of the present invention is as follows:
It is of the invention from grid-connected adaptive wind power generating set control device and method, wind-force is sent out by control module
The operating status of motor group is monitored, the opening and closing according to the operating status of wind power generating set to off-network switch and grid-connected switch
It is controlled, realizes automatic switchover of the wind power generating set from grid-connected two kinds of working conditions, reduce manpower and material resources consumption.And from
Under net mode, electric energy, which is delivered directly in hydrogen manufacturing module, carries out hydrogen manufacturing, reduces the charge and discharge process of battery, reduces electric energy
Consumption improves energy utilization rate.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes of the invention one
Point, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute improper limitations of the present invention.Attached
In figure:
Fig. 1 is provided by one embodiment of the present invention from grid-connected adaptive wind power generating set control device schematic diagram；
Fig. 2 be another embodiment of the present invention provides from grid-connected adaptive wind power generating set control device schematic diagram.
Description of symbols:
1- wind power generating set, 2- rectification module, 3- off-network switch, the grid-connected switch of 4-, 5- inverter module, 6- hydrogen manufacturing mould
Block, 7- control module, X- public electric wire net.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only of the invention
A part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Below in conjunction with attached drawing, the technical solution of embodiment that the present invention will be described in detail offer.
In a first aspect, the embodiment of the invention provides a kind of from grid-connected adaptive wind power generating set control device, such as
Shown in attached drawing 1 and attached drawing 2, which includes: wind power generating set 1, rectification module 2, off-network switch 3, grid-connected switch 4, inversion
Module 5, hydrogen manufacturing module 6 and control module 7；Wind power generating set 1 is connect with rectification module 2, rectification module 2 and off-network switch 3
It connects with hydrogen manufacturing module 6, rectification module 2 is connected with grid-connected switch 4 and inverter module 5, and 6 institute of off-network switch 3 and hydrogen manufacturing module
Series arm and grid-connected switch 4 and inverter module 5 where series arm it is in parallel, inverter module 5 and public electric wire net X company
It connects；Control module 7 is connect with wind power generating set 1, off-network switch 3 and grid-connected switch 4 respectively, for according to wind power generating set
The opening and closing of 1 operating status control off-network switch 3 and grid-connected switch 4.
Below to the working principle provided in an embodiment of the present invention from grid-connected adaptive wind power generating set control device
It is illustrated:
Control module 7 is connect with wind power generating set 1, off-network switch 3 and grid-connected switch 4 respectively.Wind power generating set 1 is transported
Row, control module 7 monitor the operating status of wind power generating set 1 and determine that wind power generating set 1 is in simultaneously according to operating status
Net mode or off-network mode.When control module 7 judges that wind power generating set 1 is in grid-connect mode, control module 7 opens off-network
3 are closed to disconnect, grid-connected switch 4 is closed, and wind power generating set 1 exports three-phase alternating current, it is rectified into direct current after rectified module 2,
DC current is that three-phase alternating current is conveyed to public electric wire net X through 5 inversion of inverter module through grid-connected switch 4.When control module 7 judges
When wind power generating set 1 is in off-network mode, control module 7 is closed off-network switch 3, and grid-connected switch 4 disconnects, wind-driven generator
Group 1 exports three-phase alternating current, and direct current is rectified into after rectified module 2, and DC current inputs hydrogen manufacturing module 6 through off-network switch 3
As the hydrogen manufacturing energy, under off-network mode, charge and discharge process of the electric energy that wind power generating set 1 generates without battery, the energy
Utilization rate is higher.
As it can be seen that it is provided in an embodiment of the present invention from grid-connected adaptive wind power generating set control device, by controlling mould
Block 7 is monitored the working condition of wind power generating set 1, according to the working condition of wind power generating set 1 to 3 He of off-network switch
The opening and closing of grid-connected switch 4 is controlled, and realizes automatic switchover of the wind power generating set 1 from grid-connected two kinds of working conditions, reduces people
The consumption of power material resources.And under off-network mode, electric energy, which is delivered directly in hydrogen manufacturing module 6, carries out hydrogen manufacturing, reduces filling for battery
Discharge process reduces power consumption, improves energy utilization rate.
Wherein, start to generate electricity when wind power generating set 1 reaches incision wind speed, after wind power generating set 1 starts power generation, control
7 one side of module, to the monitoring situation of public electric wire net X, determines whether grid-connected according to electric power dispatching system.On the other hand sentence
Can reach after the output electric energy of disconnected wind power generating set 1 is sequentially rectified and inversion grid-connected conditions (i.e. voltage-phase, amplitude and
Frequency is identical as public electric wire net X respectively).If public electric wire net allows grid-connected and can reach grid-connected conditions, control module 7 judges wind-force
Generating set 1 is grid-connect mode.If above-mentioned two condition cannot be met simultaneously, control module 7 judge wind power generating set 1 for from
Net mode.
Optionally, the generator in wind power generating set 1 is magneto alternator.Magneto alternator is by permanent magnetism
Body excitation generates the synchronous motor in synchronous rotary magnetic field, and permanent magnet generates rotating excitation field as rotor, and threephase stator winding is being revolved
Turn to incude three-phase symmetrical electric current by armature-reaction under magnetic fields, make 1 final output three-phase alternating current of wind power generating set.
Optionally, rectification module 2 is three-phase PWM controllable rectifier module.Three-phase PWM controllable rectifier module can be by three-phase alternating current
Electric rectification is at direct current, and the DC voltage exported is controllable, the three chaotic intersections that can directly export wind power generating set 1
Galvanic electricity is rectified into direct current compatible with 6 operating voltage of hydrogen manufacturing module.
Optionally, inverter module 5 is three-phase PWM inverter module.DC inverter can be three-phase by three-phase PWM inverter module
Alternating current, and the voltage of the alternating current exported is controllable, can be exchange compatible with public electric wire net X voltage by DC inverter
Electricity supplies public electric wire net X convenient for the electric energy of grid-connect mode apparatus for lower wind generating set 1.
Second aspect, the embodiment of the invention provides a kind of from grid-connected adaptive 1 control method of wind power generating set, should
Method includes:
Wind power generating set 1 is run, and control module 7 monitors the operating status of wind power generating set 1 and according to operating status
Determine that wind power generating set 1 is in grid-connect mode or off-network mode.
When wind power generating set 1 is in grid-connect mode, control module 7 disconnects off-network switch 3, and grid-connected switch 4 is closed,
Wind power generating set 1 exports three-phase alternating current, is rectified into direct current after rectified module 2, and DC current is through grid-connected switch 4 through inverse
Become 5 inversion of module and is conveyed to public electric wire net X into three-phase alternating current.
When wind power generating set 1 is in off-network mode, control module 7 is closed off-network switch 3, and grid-connected switch 4 disconnects,
Wind power generating set 1 exports three-phase alternating current, and direct current is rectified into after rectified module 2, and DC current is inputted through off-network switch 3
Hydrogen manufacturing module 6 is used as the hydrogen manufacturing energy.
It is provided in an embodiment of the present invention from grid-connected adaptive wind power generating set control method, it is right by control module 7
The working condition of wind power generating set 1 is monitored, according to the working condition of wind power generating set 1 to off-network switch 3 and grid-connected
The opening and closing of switch 4 is controlled, and realizes automatic switchover of the wind power generating set 1 from grid-connected two kinds of working conditions, reduces manpower object
Power consumption.And under off-network mode, electric energy, which is delivered directly in hydrogen producer, carries out hydrogen manufacturing, reduces the charge and discharge of battery
Journey reduces power consumption, improves energy utilization rate.
Further, this method further include: the DC voltage after control module 7 rectifies rectification module 2 is adjusted,
So that DC voltage is adapted with hydrogen manufacturing module 6.Pass through the operation, when disconnecting the closure of off-network switch 3, grid-connected switch 4, wind
It directly powers to hydrogen manufacturing module 6 after the electric energy of power generator group 1 is rectified.
Further, this method further include: the alternating current voltage after 5 inversion of inverter module is adjusted in control module 7,
So that alternating current voltage is adapted with public electric wire net X.By the operation, wind power generating set 1 and public electric wire net X foundation is made to be electrically connected
It connects, public electric wire net X can be delivered to the electric energy in grid-connect mode apparatus for lower wind generating set 1.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In addition, placement shape of "front", "rear", "left", "right", "upper", the "lower" herein to be indicated in attached drawing
State is reference.
Finally, it should be noted that the above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811403338.6A CN109286205A (en) | 2018-11-23 | 2018-11-23 | Off-grid adaptive wind turbine control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403338.6A CN109286205A (en) | 2018-11-23 | 2018-11-23 | Off-grid adaptive wind turbine control device and method |
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| Publication Number | Publication Date |
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| CN109286205A true CN109286205A (en) | 2019-01-29 |
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ID=65172890
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811403338.6A Pending CN109286205A (en) | 2018-11-23 | 2018-11-23 | Off-grid adaptive wind turbine control device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635510A (en) * | 2019-10-23 | 2019-12-31 | 河北工业大学 | Non-grid-connected wind power electrolysis water hydrogen production system and its coordinated control method |
| WO2021082423A1 (en) * | 2019-10-28 | 2021-05-06 | 阳光电源股份有限公司 | Direct-current coupling hydrogen production system and control method therefor |
| CN112909988A (en) * | 2019-12-03 | 2021-06-04 | 阳光电源股份有限公司 | Off-grid double-fed wind turbine generator system, hydrogen production system and control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741083A (en) * | 2009-12-30 | 2010-06-16 | 江苏省信息化研究中心 | Method for breaking through bottleneck of fast development of wind power and power supply system thereof |
| CN105140970A (en) * | 2015-08-03 | 2015-12-09 | 浙江大学 | Topological structure of wind-hydrogen-water-electricity hybrid energy system and control method of wind-hydrogen-water-electricity hybrid energy system |
-
2018
- 2018-11-23 CN CN201811403338.6A patent/CN109286205A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741083A (en) * | 2009-12-30 | 2010-06-16 | 江苏省信息化研究中心 | Method for breaking through bottleneck of fast development of wind power and power supply system thereof |
| CN105140970A (en) * | 2015-08-03 | 2015-12-09 | 浙江大学 | Topological structure of wind-hydrogen-water-electricity hybrid energy system and control method of wind-hydrogen-water-electricity hybrid energy system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635510A (en) * | 2019-10-23 | 2019-12-31 | 河北工业大学 | Non-grid-connected wind power electrolysis water hydrogen production system and its coordinated control method |
| CN110635510B (en) * | 2019-10-23 | 2021-01-26 | 河北工业大学 | Cooperative control method for non-grid-connected wind power water electrolysis hydrogen production system |
| WO2021082423A1 (en) * | 2019-10-28 | 2021-05-06 | 阳光电源股份有限公司 | Direct-current coupling hydrogen production system and control method therefor |
| CN112803472A (en) * | 2019-10-28 | 2021-05-14 | 阳光电源股份有限公司 | Direct-current coupling hydrogen production system and control method thereof |
| AU2020377230B2 (en) * | 2019-10-28 | 2023-07-13 | Sungrow Power Supply Co., Ltd. | Direct-current coupling hydrogen production system and control method therefor |
| CN112909988A (en) * | 2019-12-03 | 2021-06-04 | 阳光电源股份有限公司 | Off-grid double-fed wind turbine generator system, hydrogen production system and control method thereof |
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