CN101976845A - Wind-power reactive power automatic control method for monitor system of wind power station - Google Patents

Wind-power reactive power automatic control method for monitor system of wind power station Download PDF

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Publication number
CN101976845A
CN101976845A CN2010102690198A CN201010269019A CN101976845A CN 101976845 A CN101976845 A CN 101976845A CN 2010102690198 A CN2010102690198 A CN 2010102690198A CN 201010269019 A CN201010269019 A CN 201010269019A CN 101976845 A CN101976845 A CN 101976845A
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China
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energy turbine
wind energy
wind
idle
power
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CN2010102690198A
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Chinese (zh)
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石磊
陈宁
倪振华
包海龙
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国网电力科学研究院
上海市电力公司
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Priority to CN2010102690198A priority Critical patent/CN101976845A/en
Publication of CN101976845A publication Critical patent/CN101976845A/en

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    • Y02E10/763
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

Abstract

The invention relates to a wind-power reactive power automatic control method for a monitor system of a wind power station, which is characterized by comprising (1) a plan tracking mode control program and (2) a self-adaptive regulating mode control program. The method has the powerful functions of electric power real-time output and running control of an access power grid of the wind power station, can perform connection with a dispatching system of the power grid in China well, and is favorable for mutual coordination and running of the grid-connected wind power station and the power grid of an access area to improve the automation control and management running level of the wind power station.

Description

The wind-powered electricity generation reactive power autocontrol method that is used for the wind energy turbine set supervisory control system

Technical field

The present invention relates to a kind of wind-powered electricity generation reactive power autocontrol method that is used for the wind energy turbine set supervisory control system, belong to the wind energy turbine set control technology field in the generation of electricity by new energy technology.

Background technology

Over nearly 10 years, wind power generation becomes clean energy resource with fastest developing speed in the whole world with annual growth above 30%.At present, the core control technology of wind power generation is grasped abroad in enterprise's hand always, core control technologys such as the wind energy turbine set supervisory control system complete dependence on import of relevant control product such as production domesticization, unit control system, wind energy turbine set supervisory control system of still being unrealized.Along with the increase of wind energy turbine set quantity and expansion, the wind energy turbine set supervisory control system drawback of bringing to the operational management of wind energy turbine set under one's control of scale also become clear day by day.

Wind energy turbine set CSRC and tele-control system are used for operation concentrated and remote monitoring wind-powered electricity generation unit and wind energy turbine set, utilization present information and mechanics of communication, real-time collecting, analysis are also reported the wind behaviour of each wind energy turbine set and unit, wind energy turbine set operation conditions Monitoring Data, automatically or according to the instruction of administrative staff's feedback wind-powered electricity generation unit and wind energy turbine set operation are carried out efficiency optimization and safety guarantee control.Existing wind energy turbine set supervisory control system, for example the VestasOnline of Denmark Vestas company generally is made up of three parts: central authorities' collection controls (station level), control (terrain layer) on the spot, distant place control.Supervisory control system can realize multiple function, as data collection and processing capacity, controlled function, warning function, picture shows, data statistics, printing reports, operating right, multiple curve display etc., satisfy operations staff's various needs, the operations staff can be monitored in wind energy turbine set Central Control Room or a distant place and control, simultaneously the wind-powered electricity generation operator can carry out remote monitoring and management to the ruuning situation of the wind energy turbine set of various places by this system, solve the wind-powered electricity generation operator and be difficult to problem to the wind energy turbine set unified management of various places in the past, and can carry out unified monitoring to the multiple wind-powered electricity generation unit in the wind energy turbine set, realize the unattended target of wind energy turbine set.

At present, China's wind energy turbine set mostly is the large-scale wind power field and concentrates the access electric power system, the total capacity of wind energy turbine set generally has tens megawatts to the hundreds of megawatt, the remote monitoring of domestic wind-powered electricity generation operator subordinate's wind energy turbine set and operation situation can only realize by the supporting separately monitoring software of wind-powered electricity generation unit manufacturer, because the diversity of domestic wind-powered electricity generation unit type, and the control system of each type is all different, all need the corresponding central authorities of cover collection control software and respective remote monitoring software, these softwares are different along with the difference of manufacturer, online automated power regulatory function can't be provided, the power output of wind energy turbine set is regulated and is adopted the artificial mode of setting to regulate mostly, low-response, efficient is low, can't satisfy electrical network to its controlled and adjustable requirement.

Summary of the invention

Technical problem to be solved by this invention is to overcome the problem that existing wind energy turbine set supervisory control system can't realize the on-line automatic power adjustments of wind energy turbine set, and a kind of wind-powered electricity generation reactive power autocontrol method that is used for the wind energy turbine set supervisory control system is provided.

The technical solution adopted for the present invention to solve the technical problems is as follows: be used for the wind-powered electricity generation reactive power autocontrol method of wind energy turbine set supervisory control system, have (1) plan tracing mode control program; (2) self adaptation is regulated the pattern control program.

The described wind-powered electricity generation reactive power autocontrol method that is used for the wind energy turbine set supervisory control system may further comprise the steps:

A, judgement control model if the plan tracing mode enters step b, if self adaptation is regulated pattern, enter steps d,

B, read wind energy turbine set access point real-time voltage V, according to and site normal voltage reference value V Ref, calculating voltage deviation delta V=V-V Ref, enter step c,

C, calculate the idle adjustment amount Q ' of wind energy turbine set by formula (1)

Q′=Q pre+S×ΔV (1)

In the formula, Q PreBe the real-time reactive power of the wind energy turbine set of previous moment, S is the sensitivity information of wind energy turbine set node reactive power about the point voltage that is incorporated into the power networks, and enters step f,

D, read wind energy turbine set access point real-time voltage V, if satisfy 0.98V Ref≤ V≤1.02V RefCondition, wind energy turbine set are not carried out voltage power-less control, still by the current idle operation of exerting oneself, if do not satisfy above-mentioned condition, enter step e,

E, the wind farm grid-connected point voltage deviation delta V of calculating calculate the idle adjustment amount of wind energy turbine set according to formula (1), enter step f,

F, judge whether the idle Q of exerting oneself ' of adjusted wind energy turbine set satisfies the wind energy turbine set service requirement, if Q '>Q MaxOr Q '<Q Min, then the idle Q of exerting oneself ' of wind energy turbine set is modified to:

Q &prime; = Q max Q &prime; > Q max Q min Q &prime; < Q min - - - ( 7 )

In the formula, Q MaxAnd Q MinBe respectively idle maximum and the minimum value of exerting oneself of wind energy turbine set, enter step g,

G, exert oneself by wind-powered electricity generation unit capacity pro rate to every typhoon group of motors the wind energy turbine set that obtains is in real time idle, carry out idle regulation and control,, return step a through the 1s time-delay.

Beneficial effect of the present invention is as follows:

(1) the present invention provides wind-powered electricity generation reactive power autocontrol method for the wind energy turbine set supervisory control system, has more powerful wind power automation controlled function, and can be preferably and China's dispatching of power netwoks control system interface, the service data of wind energy turbine set is sent to power network dispatching system, and receive the dispatch command of electrical network from dispatching patcher, requirement according to grid dispatching center, the demand of area power grid operation and the operating mode of wind energy turbine set are carried out electric power output in real time and operation control, can carry out unified planning to exerting oneself in real time of wind energy turbine set in the wind energy turbine set level, help the grid connected wind power field and insert the mutual cooperation operation of area power grid.

(2) wind-powered electricity generation reactive power autocontrol method of the present invention can improve the automatic operating and the managerial skills of wind energy turbine set.

Description of drawings

Fig. 1 is the automatic controlled function schematic diagram of wind-powered electricity generation reactive power among the present invention.

Fig. 2 is the flow chart of wind-powered electricity generation reactive power automatic control program among Fig. 1.

Embodiment

With reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in further detail.But the invention is not restricted to given example.

As shown in Figure 1, the present invention's wind-powered electricity generation reactive power autocontrol method of being used for the wind energy turbine set supervisory control system has (1) plan tracing mode control program; (2) self adaptation is regulated the pattern control program.

Embodiment one:

As shown in Figure 2, the present invention is used for the automatic control program of the wind-powered electricity generation reactive power autocontrol method employing plan tracing mode of wind energy turbine set supervisory control system.

The always meritorious capacity in this grid connected wind power field is 100MW, reactive capability is ± 33.5MVar, being 1.5MW, reactive capability by the meritorious capacity of 67 units constitutes for the double-fed asynchronous wind-powered electricity generation unit of ± 0.5MVar, initial idle the exerting oneself of wind energy turbine set is 0, initial voltage is 230kV, and wind energy turbine set is idle about the sensitivity of the point voltage that is incorporated into the power networks is 2.At this moment, the wind farm grid-connected point voltage of artificial setting is 220kV, then calculate the idle value of exerting oneself and be 20MVar, the then idle control program of exerting oneself should value arrive each wind-powered electricity generation unit by the unit capacity pro rate, be that every typhoon group of motors is adjusted the idle 0.3MVar of exerting oneself, can satisfy idle requirement of exerting oneself like this.

Embodiment two:

As shown in Figure 2, the present invention is used for the automatic control program of the wind-powered electricity generation reactive power autocontrol method employing self adaptation adjusting pattern of wind energy turbine set supervisory control system.

The always meritorious capacity in this grid connected wind power field is 100MW, reactive capability is ± 33.5MVar, being 1.5MW, reactive capability by the meritorious capacity of 67 units constitutes for the double-fed asynchronous wind-powered electricity generation unit of ± 0.5MVar, wind energy turbine set is initially moved by permanent unity power factor mode, idle exerting oneself is 0, initial idle the exerting oneself of every typhoon group of motors also is 0, and wind energy turbine set is idle about the sensitivity of the point voltage that is incorporated into the power networks is 1.In addition, because voltage is local quantity, be that idle adjusting can only exert an influence to voltage in very little regional area, so the idle adjusting of wind energy turbine set only takes into account the voltage influence that wind energy turbine set inserts regional partial electric grid, during concrete control, select wind energy turbine set to insert transformer station's low-pressure side voltage as controlling object, at first, the actual measurement voltage that reads wind energy turbine set access transformer station is 230kV, voltage reference value is 220kV, scope is 215kV~225kV, exceed and allow the working voltage scope, calculate wind energy turbine set and adjust the idle 10MVar of exerting oneself, adjusted wind energy turbine set is idle exerts oneself and is 10MVar, idle the exerting oneself of every typhoon group of motors adjusted 0.15MVar, and idle the exerting oneself of adjusting the every typhoon group of motors in back is 0.15MVar.After the adjustment, time-delay 1s, recording wind energy turbine set access transformer station low-pressure side voltage once more is 226kV, still exceed the working voltage scope that allows, calculate wind energy turbine set and adjust the idle 6MVar of exerting oneself once more this moment, adjusted wind energy turbine set is idle exerts oneself and is 16MVar, and idle the exerting oneself of every typhoon group of motors adjusted 0.09MVar, and idle the exerting oneself of adjusting the every typhoon group of motors in back is 0.24MVar.After the adjustment, time-delay 1s, recording wind energy turbine set access transformer station low-pressure side voltage is 224kV, in allowing the working voltage scope, returns to the normal voltage scope.

Claims (2)

1. be used for the wind-powered electricity generation reactive power autocontrol method of wind energy turbine set supervisory control system, it is characterized in that: have (1) plan tracing mode control program; (2) self adaptation is regulated the pattern control program.
2. the wind-powered electricity generation reactive power autocontrol method that is used for the wind energy turbine set supervisory control system according to claim 1 is characterized in that, further may further comprise the steps:
A, judgement control model if the plan tracing mode enters step b, if self adaptation is regulated pattern, enter steps d,
B, read wind energy turbine set access point real-time voltage V, according to and site normal voltage reference value V Ref, calculating voltage deviation delta V=V-V Ref, enter step c,
C, calculate the idle adjustment amount Q ' of wind energy turbine set by formula (1)
Q′=Q pre+S×ΔV (1)
In the formula, Q PreBe the real-time reactive power of the wind energy turbine set of previous moment, S is the sensitivity information of wind energy turbine set node reactive power about the point voltage that is incorporated into the power networks, and enters step f,
D, read wind energy turbine set access point real-time voltage V, if satisfy 0.98V Ref≤ V≤1.02V RefCondition, wind energy turbine set are not carried out voltage power-less control, still by the current idle operation of exerting oneself, if do not satisfy above-mentioned condition, enter step e,
E, the wind farm grid-connected point voltage deviation delta V of calculating calculate the idle adjustment amount of wind energy turbine set according to formula (1), enter step f,
F, judge whether the idle Q of exerting oneself ' of adjusted wind energy turbine set satisfies the wind energy turbine set service requirement, if Q '>Q MaxOr Q '<Q Min, then the idle Q of exerting oneself ' of wind energy turbine set is modified to:
Q &prime; = Q max Q &prime; > Q max Q min Q &prime; < Q min - - - ( 7 )
In the formula, Q MaxAnd Q MinBe respectively idle maximum and the minimum value of exerting oneself of wind energy turbine set, enter step g,
G, exert oneself by wind-powered electricity generation unit capacity pro rate to every typhoon group of motors the wind energy turbine set that obtains is in real time idle, carry out idle regulation and control,, return step a through the 1s time-delay.
CN2010102690198A 2010-09-01 2010-09-01 Wind-power reactive power automatic control method for monitor system of wind power station CN101976845A (en)

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CN102163849A (en) * 2011-03-11 2011-08-24 中国电力科学研究院 Wind power output adaptive smoothing method based on energy storage battery charge state feedback
CN103208803A (en) * 2013-04-18 2013-07-17 国家电网公司 Reactive voltage optimal control method for wind electricity and photo-electricity integrated grid connection
CN106655203A (en) * 2016-10-31 2017-05-10 国网甘肃省电力公司经济技术研究院 Sensitivity-based reactive power regulation priority selection method of wind farms

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CN101272117A (en) * 2008-04-07 2008-09-24 国网南京自动化研究院 Electric voltage idle-work fast control method of speed-changing constant frequency wind generator group wind power station
CN101277014A (en) * 2008-04-30 2008-10-01 江苏科能电力工程咨询有限公司 Method for selecting wind power generation access system plan
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CN101272117A (en) * 2008-04-07 2008-09-24 国网南京自动化研究院 Electric voltage idle-work fast control method of speed-changing constant frequency wind generator group wind power station
CN101277014A (en) * 2008-04-30 2008-10-01 江苏科能电力工程咨询有限公司 Method for selecting wind power generation access system plan
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Publication number Priority date Publication date Assignee Title
CN102163849A (en) * 2011-03-11 2011-08-24 中国电力科学研究院 Wind power output adaptive smoothing method based on energy storage battery charge state feedback
CN102163849B (en) * 2011-03-11 2014-07-23 中国电力科学研究院 Wind power output adaptive smoothing method based on energy storage battery charge state feedback
CN103208803A (en) * 2013-04-18 2013-07-17 国家电网公司 Reactive voltage optimal control method for wind electricity and photo-electricity integrated grid connection
CN106655203A (en) * 2016-10-31 2017-05-10 国网甘肃省电力公司经济技术研究院 Sensitivity-based reactive power regulation priority selection method of wind farms

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Application publication date: 20110216