CN104065079B - The control method for coordinating of the discrete and Continuous Var Compensation of a kind of wind-powered electricity generation - Google Patents
The control method for coordinating of the discrete and Continuous Var Compensation of a kind of wind-powered electricity generation Download PDFInfo
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- CN104065079B CN104065079B CN201410331566.2A CN201410331566A CN104065079B CN 104065079 B CN104065079 B CN 104065079B CN 201410331566 A CN201410331566 A CN 201410331566A CN 104065079 B CN104065079 B CN 104065079B
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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
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- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The present invention is the discrete and Continuous Var Compensation control method for coordinating of a kind of wind-powered electricity generation, first, AVC uniting and adjustment system obtains the real time information of reactive power compensator in electrical network by control system, then according to the reactive power compensator parameter model in AVC uniting and adjustment system and point information, in conjunction with the voltage power-less information of electrical network, carry out voltage and reactive power optimization policy calculation in wind energy turbine set, achieve the cooperation control of the discrete reactive power compensator to Continuous Var Compensation device in wind energy turbine set and other fixed capacities.
Description
Technical field
The present invention relates to a kind of electric network reactive-load voltage integrated control and optimize method of power system automatic field, specifically the control method for coordinating of the discrete and Continuous Var Compensation of a kind of wind-powered electricity generation.
Background technology
Closely during the last ten years, along with the high speed development of China's economic, country continues to implement extensive investment to electrical network, and therefore electric power system obtains development at a high speed, and electrical network scale rapid development, power automation technology there has also been very large raising.The green energy resources such as country increased the investment to renewable and clean energy resources such as wind-powered electricity generations especially in recent years, wind-powered electricity generation development is very fast.
AVC system, based on real time information accurately, realizes the automatic adjustment to electric network reactive-load by the voltage power-less regulating measure of electrical network.Current AVC system generally using configure in electrical network the adjustable gear of transformer, capacitor/reactor is as voltage and reactive power compensation means, because the capacitor/reactor be equipped with at present is fixed capacity, the adjustment of AVC system to voltage power-less is caused to be discrete, can not meet in actual electric network and requirement is regulated to the continuously smooth of voltage power-less, really cannot accomplish that idle this locality compensates, voltage smooth adjustment.And Continuous Var Compensation device governing speed is relatively slow, finite capacity, this feature comparatively large of voltage power-less fluctuation in wind energy turbine set cannot be adapted to.
Summary of the invention
The present invention aims to provide the control method for coordinating of the discrete and Continuous Var Compensation of a kind of wind-powered electricity generation, adopt AVC uniting and adjustment control mode, access Continuous Var Compensation device, realize the system to the Continuous Compensation of wind energy turbine set voltage power-less, optimize current voltage Reactive Power Automatic Regulating, reduce grid loss, improve quality of voltage, reduce the expense that voltage and reactive power optimization regulates, improve conditioning equipment useful life.
Technical scheme of the present invention is as follows:
A control method for coordinating for the discrete and Continuous Var Compensation of wind-powered electricity generation, is characterized in that implementing cooperation control according to following steps:
1), in AVC uniting and adjustment system, addition is measured: the measurement amount of adding comprises booster stations and uprises that idle, current Continuous Var Compensation device is idle exerts oneself and the idle of current discrete Reactive Power Device is exerted oneself; And in AVC uniting and adjustment system, set up Continuous Var Compensation device parameter model and discrete reactive power compensator parameter model, the idle adjustment bound of exerting oneself of typing Continuous Var Compensation device, the rated capacity Qc of each discrete Reactive Power Device;
2) the actual reactive requirement reqQ:reqQ=current boost station, calculated in current wind energy turbine set uprises the idle of discrete Reactive Power Device of exerting oneself without work value-current Continuous Var Compensation device is idle-has dropped into and exerts oneself; And the idle critical point deltQi:deltQi=Qci × S that exerts oneself calculated when current adjustable i-th group of discrete Reactive Power Device drops into; In formula, i represents i-th numbering of discrete Reactive Power Device numbering descending by measure, and S is discrete and continuous reactive device handoff factor, and it is actual reactive requirement when dropping into discrete Reactive Power Device and the current ratio waiting to throw discrete Reactive Power Device capacity; If capacitive reactive power device, Qci get on the occasion of, if perceptual Reactive Power Device, Qci gets negative value;
3), according to voltage instantaneous value and voltage limits, calculate current voltage and regulate direction, need boosted voltage to be CAPON, needing to reduce voltage is CAPOFF, and is implemented as follows coordination control strategy and carries out the adjustment of wind-powered electricity generation voltage power-less:
Under CAPON, during reqQ-deltQi > 0, excise one group of discrete inductive reactive power compensation device thrown a), successively, until all discrete perceptual Reactive Power Devices all excise complete; B), drop into i-th group of discrete capacitive reactive power compensator, forbid the idle output of Continuous Var Compensation device simultaneously; C), regulate Continuous Var Compensation device, drop into capacitive reactive power, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPON, during reqQ-deltQi≤0, excise one group of discrete inductive reactive power compensation device thrown a), successively, until all discrete perceptual Reactive Power Devices all excise complete; B), regulate Continuous Var Compensation device, drop into capacitive reactive power, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPOFF, during reqQ-deltQi > 0, excise one group of discrete capacitive reactive power compensator thrown a), successively, until all discrete capacitive Reactive Power Devices all excise complete; B), drop into i-th group of discrete inductive reactive power compensation device, forbid the idle output of Continuous Var Compensation device simultaneously; C), regulate Continuous Var Compensation device, drop into perceptual idle, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPON, during reqQ-deltQi≤0, excise one group of discrete capacitive reactive power compensator thrown a), successively, until all discrete capacitive Reactive Power Devices all excise complete; B), regulate Continuous Var Compensation device, drop into perceptual idle, input amount is that Continuous Var Compensation device single allows step-length.
Good effect of the present invention is: the present invention accesses Continuous Var Compensation device and discrete Reactive Power Device in wind-powered electricity generation booster stations in AVC system, according to the method for discrete Reactive Power Device coarse adjustment, the fine tuning of continuous reactive device, achieve to Continuous Var Compensation device and discrete reactive power compensator in station cooperation control.The continuously smooth achieving user side voltage regulates, optimize the adjustment of voltage power-less in electrical network, reduce scope range of the fluctuation of voltage, improve stability and the reliability of voltage, achieve idle continuous local compensation, the mobility reduced in electrical network is idle, thus reduces the loss of electrical network, reduce the adjustment number of times of reactive apparatus, improve utilance and the useful life of reactive-load compensation equipment in station.
The present invention uses Continuous Var Compensation device at station end, in conjunction with original discrete reactive power compensator, utilizes original control system information and means of communication.Have cost low, income is large, the feature had a extensive future.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Discrete and the Continuous Var Compensation control method for coordinating of a kind of wind-powered electricity generation of the present invention, first, AVC uniting and adjustment system obtains the real time information of Continuous Var Compensation device in electrical network by control system, then according to the reactive power compensator parameter model in AVC uniting and adjustment system and point information, in conjunction with the voltage power-less information of electrical network, carry out voltage and reactive power optimization policy calculation in wind energy turbine set, realize the cooperation control of the discrete reactive power compensator to Continuous Var Compensation device in wind energy turbine set and other fixed capacities.
It is below rate-determining steps.
1, in AVC uniting and adjustment system, addition is measured: the measurement amount of adding comprises booster stations and uprises that idle, current Continuous Var Compensation device is idle exerts oneself and the idle of current discrete Reactive Power Device is exerted oneself.
2, in AVC uniting and adjustment system, Continuous Var Compensation device parameter model and discrete reactive power compensator parameter model is set up, the idle adjustment bound of exerting oneself of typing Continuous Var Compensation device, the rated capacity Qc of each discrete reactive power compensator.
3, the actual reactive requirement reqQ:reqQ=current boost station calculated in current wind energy turbine set uprises the idle of discrete Reactive Power Device of exerting oneself without work value-current Continuous Var Compensation device is idle-has dropped into and exerts oneself;
And the idle critical point deltQi:deltQi=Qci × S that exerts oneself calculated when current adjustable i-th group of discrete Reactive Power Device drops into.
In formula, i represents i-th numbering of discrete Reactive Power Device numbering descending by measure.S is discrete and continuous reactive device handoff factor, actual reactive requirement when it is input discrete Reactive Power Device and the current ratio waiting to throw discrete Reactive Power Device capacity.
Wherein if capacitive reactive power device, Qci get on the occasion of, if perceptual Reactive Power Device, Qci gets negative value.
4, according to voltage instantaneous value and voltage limits, calculate current voltage and regulate direction.Need boosted voltage to be CAPON, needing to reduce voltage is CAPOFF.And use the coordination control strategy of table 1 to carry out the adjustment of wind-powered electricity generation voltage power-less:
Table 1, coordination control strategy
Claims (1)
1. a control method for coordinating for the discrete and Continuous Var Compensation of wind-powered electricity generation, is characterized in that implementing cooperation control according to following steps:
1), in AVC uniting and adjustment system, addition is measured: the measurement amount of adding comprises booster stations and uprises that idle, current Continuous Var Compensation device is idle exerts oneself and the idle of current discrete Reactive Power Device is exerted oneself; And in AVC uniting and adjustment system, set up Continuous Var Compensation device parameter model and discrete reactive power compensator parameter model, the idle adjustment bound of exerting oneself of typing Continuous Var Compensation device, the rated capacity Qc of each discrete Reactive Power Device;
2) the actual reactive requirement reqQ:reqQ=current boost station, calculated in current wind energy turbine set uprises the idle of discrete Reactive Power Device of exerting oneself without work value-current Continuous Var Compensation device is idle-has dropped into and exerts oneself; And the idle critical point deltQi:deltQi=Qci × S that exerts oneself calculated when current adjustable i-th group of discrete Reactive Power Device drops into; In formula, i represents i-th numbering of discrete Reactive Power Device numbering descending by measure, and S is discrete and continuous reactive device handoff factor, and it is actual reactive requirement when dropping into discrete Reactive Power Device and the current ratio waiting to throw discrete Reactive Power Device capacity; If capacitive reactive power device, Qci get on the occasion of, if perceptual Reactive Power Device, Qci gets negative value;
3), according to the voltage instantaneous value in wind energy turbine set and voltage limits, calculate current voltage and regulate direction, need boosted voltage to be CAPON, needing to reduce voltage is CAPOFF, and is implemented as follows coordination control strategy and carries out the adjustment of wind-powered electricity generation voltage power-less:
Under CAPON, during reqQ-deltQi > 0, excise one group of discrete inductive reactive power compensation device thrown a), successively, until all discrete perceptual Reactive Power Devices all excise complete; B), drop into i-th group of discrete capacitive reactive power compensator, forbid the idle output of Continuous Var Compensation device simultaneously; C), regulate Continuous Var Compensation device, drop into capacitive reactive power, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPON, during reqQ-deltQi≤0, excise one group of discrete inductive reactive power compensation device thrown a), successively, until all discrete perceptual Reactive Power Devices all excise complete; B), regulate Continuous Var Compensation device, drop into capacitive reactive power, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPOFF, during reqQ-deltQi > 0, excise one group of discrete capacitive reactive power compensator thrown a), successively, until all discrete capacitive Reactive Power Devices all excise complete; B), drop into i-th group of discrete inductive reactive power compensation device, forbid the idle output of Continuous Var Compensation device simultaneously; C), regulate Continuous Var Compensation device, drop into perceptual idle, input amount is that Continuous Var Compensation device single allows step-length;
Under CAPON, during reqQ-deltQi≤0, excise one group of discrete capacitive reactive power compensator thrown a), successively, until all discrete capacitive Reactive Power Devices all excise complete; B), regulate Continuous Var Compensation device, drop into perceptual idle, input amount is that Continuous Var Compensation device single allows step-length.
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Denomination of invention: A coordinated control method for discrete and continuous reactive power compensation of wind power Effective date of registration: 20211213 Granted publication date: 20160120 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: DONGFANG ELECTRONICS Co.,Ltd. Registration number: Y2021980014783 |
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Date of cancellation: 20220725 Granted publication date: 20160120 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: DONGFANG ELECTRONICS Co.,Ltd. Registration number: Y2021980014783 |