CN102518560A - Method for regulating active power of wind power field - Google Patents
Method for regulating active power of wind power field Download PDFInfo
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- CN102518560A CN102518560A CN2011104540715A CN201110454071A CN102518560A CN 102518560 A CN102518560 A CN 102518560A CN 2011104540715 A CN2011104540715 A CN 2011104540715A CN 201110454071 A CN201110454071 A CN 201110454071A CN 102518560 A CN102518560 A CN 102518560A
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- 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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- Y02E10/72—Wind turbines with rotation axis in wind direction
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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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Abstract
The invention discloses a method for regulating active power of a wind power field. The active power of each fan is limited through controlling the pitch angles of the fans in the wind power field, and thereby, the load limit of the whole wind power field is realized. The active power regulation process can be divided into a primary coarse regulation level and a secondary fine regulation level, so that a closed loop is formed in power regulation, and the error proportion of input to output is effectively reduced. After the technical scheme is adopted by the method for regulating the active power of the wind power field, the active power of the wind power field can be rapidly, accurately and effectively regulated, the safety and the power quality of a power grid after the wind power field is put in are improved, and the stability of a power system is effectively maintained.
Description
Technical field
The present invention relates to wind-powered electricity generation regulation and control field, particularly, relate to a kind of wind energy turbine set active power regulating method.
Background technique
Because Global climate change, environmental problems such as greenhouse gas emission are serious day by day, and the exploitation of green regenerative energy sources and use obtain increasing attention.Wind power technology is at present except that water power, the most ripe, the best a kind of generation technology that utilizes renewable energy sources of economic benefit, fast development in the world in recent years scope.
China is vast in territory, and wind energy resources is abundant, and potentiality to be exploited is huge.Along with on the fast development of wind power technology and the national policy to the attention of green regenerative energy sources, the wind-powered electricity generation cause of China has got into the period of a fast development.In January, 2011, renewable energy sources Professional Committee of China Association of Resources Comprehensive Utilization and international environmental protection organization Green Peace announce, China has become global maximum wind-powered electricity generation installation state.The recent statistics data display, by the end of the year 2010, the newly-increased installation of Chinese annual wind-power electricity generation reaches 1,600 ten thousand kilowatts, and the accumulative total electric motor power reaches 4182.7 ten thousand kilowatts, surpasses the U.S. first, leaps to the first in the world.In China, wind-powered electricity generation has begun to reduce environmental pollution practicing thrift non-renewable energy resources, and aspects such as alleviation power shortage play a role.But along with the quick popularization of wind power technology, the continuous expansion of construction scale, Chinese wind-powered electricity generation development also faces the actual challenges of many aspects such as manufacturing technology, operation management and electrical network bottleneck at present.
Usually, large-scale wind energy turbine set is all built from far-off regions, and the electric energy that this locality can't digest can only be realized the maximization of the wind-powered electricity generation utilization of resources through being incorporated into the power networks.And the randomness of wind power and intermittence must cause adverse effect to the safe operation and the quality of power supply of electrical network behind the access electrical network, and system's traffic control and control are had higher requirement.Overall study both domestic and external trends towards requiring the large-scale wind electricity field also must become a part of effectively controlling in the system as conventional energy power plant; The task of meritorious control of the system that bears and mains frequency control, therefore the regulating power to wind-powered electricity generation unit, wind energy turbine set self has proposed very high requirement.In conjunction with the wind-powered electricity generation characteristics, analyze the wind-powered electricity generation characteristic, research also proposes to be applicable to active power adjusting of large-scale wind power field and controlling method, to improving the Security and the quality of power supply that inserts the back electrical network, effectively safeguards the stable significant of electric power system.
Summary of the invention
The objective of the invention is to provides a kind of quick, accurate and effective wind energy turbine set active power regulating method to the problems referred to above, can improve the Security and the quality of power supply that wind energy turbine set inserts the back electrical network, effectively safeguards the stability of electric power system.
For realizing above-mentioned purpose, the present invention takes following technological scheme:
A kind of wind energy turbine set active power regulating method limits the active power of every typhoon machine through the propeller pitch angle of controlling blower fan in the wind energy turbine set, thereby realizes the limited load of whole wind electric field.
Further, said regulating method comprises first coarse adjustment, specifically comprises the steps:
(1) receives the wind energy turbine set whole audience power limit that the dispatching of power netwoks instruction provides;
(2) confirm wind farm grid-connected blower fan platform number;
(3), calculate separate unit power of fan limit value according to the data of step (1) and (2);
(4) calculate the rotating speed desired value of separate unit blower fan according to the corresponding relation of separate unit power of fan limit value and power and rotating speed;
(5) calculate blower fan according to the corresponding relation of the rotating speed desired value of separate unit blower fan and rotating speed and slurry elongation and should adjust the slurry elongation that obtains, and then the blower fan of wind energy turbine set is carried out first coarse adjustment control.
Further; Obtaining wind energy turbine set whole audience power limit that dispatching of power netwoks instruction provides in the said step (1) can be through two kinds of approach: the one, obtain automatically through network communication interface; The 2nd, receive the dispatching of power netwoks instruction through phone, manually import wind energy turbine set whole audience power limit.
Further, the algorithm use power-rotating speed pid algorithm in the said step (4).
Further, the corresponding relation of said power and rotating speed is to draw according to the corresponding relation of power in nearly three months historical data of current wind energy turbine set and rotating speed to form, and in the fan operation process afterwards, can revise in real time.
Further, the algorithm use rotating speed in the said step (5)-slurry elongation pid algorithm.
Further, after first coarse adjustment, can carry out the secondary fine setting, said trim step is:
Total power value according to certain frequency detecting wind energy turbine set outlet feedback; Difference between the wind energy turbine set power limit that total power value that outlet is fed back according to wind energy turbine set and dispatching of power netwoks instruction provide; Judge whether to return once more step (4), described rotating speed desired value is revised fine setting.
Further; Total power value like said wind energy turbine set outlet feedback is no more than the wind energy turbine set power limit that the dispatching of power netwoks instruction provides; Do not return step (4); Revise fine setting above then returning step (4), said correction trim step is: calculate the total power value of wind energy turbine set outlet feedback and the difference of the wind energy turbine set power limit that the dispatching of power netwoks instruction provides, according to the corresponding relation of power and rotating speed; Find out the rotating speed of the power low said difference more corresponding, as the rotating speed desired value of fine setting than the rotating speed desired value of first coarse adjustment.
Further, greater than 0.05R/min, then need fine setting several times like the difference between the rotating speed desired value of the rotating speed desired value of said fine setting and first coarse adjustment, the rotating speed adjusting range of each fine setting is not more than 0.05R/min.
As stated, wind energy turbine set active power regulating method of the present invention can be divided into two and regulate level, and the blower fan that the wind energy turbine set whole audience power limit that at first provides according to the dispatching of power netwoks instruction participates in regulating to wind energy turbine set carries out first coarse adjustment.Because it is there are factors such as a consumption, after first coarse adjustment, also different with the performance number that wind energy turbine set exports through the wind energy turbine set performance number that monitoring is obtained.Carry out secondary according to wind energy turbine set outlet power again this moment and finely tune, make power adjustments form a closed loop, reduce input and the error ratio of exporting.
The present invention is owing to take above technological scheme, and it has the following advantages:
1, the present invention controls precisely, fast response, regulating frequency be high, the present invention can be controlled at wind energy turbine set power adjustments validity ± 2% in, accomplish first governing response at 10-20s and so on, it was 5 seconds that fine setting detects frequency.
2, the present invention is stable, reliability is high, can guarantee not delay for a long time machine stable operation, and guarantees that minimum fine setting number of times adjusting puts in place, avoids frequent the adjusting that Fan Equipment is caused wearing and tearing.
3, the present invention accurately regulates, is easy to carry out function expansion, and the present invention allows the user to lock as required not participate in the wind energy turbine set blower fan regulated, and the statistical function of wind energy turbine set loss generated energy can be provided on the basis of regulatory function of the present invention in addition.
Through accompanying drawing and embodiment, technological scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the flow chart of wind energy turbine set active power regulating method of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
The present invention limits the active power of every typhoon machine through the propeller pitch angle of control blower fan, thereby realizes the limited load of whole wind electric field.Whole adjustment process is divided into two significant process; The wind energy turbine set whole audience power limit that at first provides according to the dispatching of power netwoks instruction; The blower fan that the whole audience is participated in regulating carries out first coarse adjustment, and then carries out the secondary fine setting according to wind energy turbine set outlet power, to reduce the error that factors such as wind energy turbine set field consumption are brought.As shown in Figure 1, concrete regulating step is following:
Step 1: input end of the present invention receives the wind energy turbine set whole audience power limit that the dispatching of power netwoks instruction provides; Obtaining wind energy turbine set whole audience power limit that this dispatching of power netwoks instruction provides can be through two kinds of approach: the one, obtain automatically through network communication interface; The 2nd, receive the electrical network instruction through phone, manually import wind energy turbine set whole audience power limit.
Step 2: after obtaining dispatch command, need to confirm the platform number of current wind farm grid-connected blower fan, promptly participate in the blower fan platform number that active power is regulated.
Step 3:, calculate the power limit of separate unit blower fan according to the blower fan platform number of wind energy turbine set whole audience power limit and the adjusting of participation active power.
Step 4: according to the corresponding relation of in-situ power and rotating speed, calculate the rotating speed desired value of every typhoon machine, adopt power-rotating speed pid algorithm to calculate.
The corresponding relation of power and rotating speed is to draw according to the corresponding relation of rotating speed in nearly three months historical data of current wind field and power to form, and in the fan operation process afterwards, correction is in real time regulated the quick, accurate of control for the first time with assurance.
Step 5: according to the rotating speed desired value of blower fan and the relation of rotating speed and propeller pitch angle, calculate the propeller pitch angle angle value that blower fan should be adjusted to, adopt rotating speed-propeller pitch angle pid algorithm to calculate, and then blower fan is carried out first coarse adjustment control,
Step 6: after having realized first coarse adjustment control; Total power value according to certain frequency detecting wind energy turbine set feedback; Instruct the difference between the wind energy turbine set power limit that provides according to the total power value of wind energy turbine set feedback and dispatching of power netwoks; Judge whether to return once more step (4),, original rotating speed desired value is revised fine setting according to dispatching of power netwoks instruction and total power value, tachometer value and the power of wind field feedback and the corresponding relation of rotating speed.
Promptly regulate for the first time put in place after, check the relation between the total power value of wind energy turbine set outlet feedback and the wind energy turbine set power limit that the dispatching of power netwoks instruction provides at set intervals.If difference will not be finely tuned within the permission wave range once more.If surpass wave range, will according between difference, the corresponding relation of reference power and rotating speed carries out the adjustment of corresponding amplitude simultaneously.
In the adjustment process, take progressive principle, in order to avoid total power value is crossed great fluctuation process.
Such as: whole audience Power Limitation fixes on 1000kw, and according to rotating speed power corresponding tables, the tachometer value of adjustment is 16.35R/min for the first time.After the operation,, will not regulate if remain in the 1000kw wave range always.If go beyond the scope, be 1035kw 1. such as the actual total output of the whole audience, it is 35kw that program can calculate difference, and in readout power and the rotating speed corresponding tables, the rotating speed of the power low 35kw more corresponding than 16.35R/min is 16.32R/min.16.32R/min just as the desired value of current fine setting.2. the actual total output of the whole audience is 1075kw; It is 75kw that program can calculate difference, and in readout power and the rotating speed corresponding tables, the rotating speed of the power low 75kw more corresponding than 16.35R/min is 16.25R/min; Can earlier rotating speed be transferred to 16.3R/min (control each adjusting range and be not more than 0.05R/min); After a period of stabilisation, contrast difference again, regulate once more.In order to avoid regulate excessively, it is excessive to fluctuate.
The fine setting program keeps taking turn.
Usually after first coarse adjustment, need once finely tune to regulate power more accurately and reach desired value.After this,, then do not need to regulate again control, avoid frequent the adjusting that Fan Equipment is caused wearing and tearing only if significantly changing appears in wind regime such as the wind speed in wind energy turbine set zone, wind direction.
This invention is obtained or artificial input power limit value after receiving a dispatch command automatically, and clicks and begin control, just need not carry out any operation afterwards, and program can automatically adjust to the active power of wind energy turbine set according to the actual platform number that is incorporated into the power networks.Only after the dispatch command change, just need control again.
Among above-mentioned each embodiment, the concrete realization of each step all can change to some extent, on the basis of technological scheme of the present invention, to the improvement and the equivalents of individual steps, should not get rid of outside protection scope of the present invention.
Claims (9)
1. a wind energy turbine set active power regulating method is characterized in that, limits the active power of every typhoon machine through the propeller pitch angle of controlling blower fan in the wind energy turbine set, thereby realizes the limited load of whole wind electric field.
2. wind energy turbine set active power regulating method according to claim 1 is characterized in that said regulating method comprises first coarse adjustment, specifically comprises the steps:
(1) receives the wind energy turbine set whole audience power limit that the dispatching of power netwoks instruction provides;
(2) confirm wind farm grid-connected blower fan platform number;
(3), calculate separate unit power of fan limit value according to the data of step (1) and (2);
(4) calculate the rotating speed desired value of separate unit blower fan according to the corresponding relation of separate unit power of fan limit value and power and rotating speed;
(5) calculate blower fan according to the corresponding relation of the rotating speed desired value of separate unit blower fan and rotating speed and slurry elongation and should adjust the slurry elongation that obtains, and then the blower fan of wind energy turbine set is carried out first coarse adjustment control.
3. wind energy turbine set active power regulating method according to claim 2; It is characterized in that; Obtaining wind energy turbine set whole audience power limit that dispatching of power netwoks instruction provides in the said step (1) can be through two kinds of approach: the one, obtain automatically through network communication interface; The 2nd, receive the dispatching of power netwoks instruction through phone, manually import wind energy turbine set whole audience power limit.
4. wind energy turbine set active power regulating method according to claim 2 is characterized in that, the algorithm use power-rotating speed pid algorithm in the said step (4).
5. wind energy turbine set active power regulating method according to claim 4; It is characterized in that; The corresponding relation of said power and rotating speed is to draw according to the corresponding relation of power in nearly three months historical data of current wind energy turbine set and rotating speed to form; And in the fan operation process afterwards, can revise in real time.
6. wind energy turbine set active power regulating method according to claim 4 is characterized in that, the algorithm use rotating speed in the said step (5)-slurry elongation pid algorithm.
7. according to each described wind energy turbine set active power regulating method of claim 2-6, it is characterized in that after first coarse adjustment, can carry out the secondary fine setting, said trim step is:
Total power value according to certain frequency detecting wind energy turbine set outlet feedback; Difference between the wind energy turbine set power limit that total power value that outlet is fed back according to wind energy turbine set and dispatching of power netwoks instruction provide; Judge whether to return once more step (4), described rotating speed desired value is revised fine setting.
8. wind energy turbine set active power regulating method according to claim 7; It is characterized in that; Total power value like said wind energy turbine set outlet feedback is no more than the wind energy turbine set power limit that the dispatching of power netwoks instruction provides; Do not return step (4), revise fine setting above then returning step (4), said correction trim step is:
Calculate the total power value of wind energy turbine set outlet feedback and the difference of the wind energy turbine set power limit that the dispatching of power netwoks instruction provides; Corresponding relation according to power and rotating speed; Find out the rotating speed of the power low said difference more corresponding, as the rotating speed desired value of fine setting than the rotating speed desired value of first coarse adjustment.
9. wind energy turbine set active power regulating method according to claim 8; It is characterized in that; Greater than 0.05R/min, then need fine setting several times like the difference between the rotating speed desired value of the rotating speed desired value of said fine setting and first coarse adjustment, the rotating speed adjusting range of each fine setting is not more than 0.05R/min.
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Cited By (9)
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| CN102748216A (en) * | 2012-07-13 | 2012-10-24 | 国电联合动力技术有限公司 | Method, system and device for regulating active power of wind power generator unit |
| CN103397983A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Method of active power and speed control for variable speed wind turbines |
| WO2014201849A1 (en) * | 2013-06-18 | 2014-12-24 | 国网辽宁省电力有限公司电力科学研究院 | Method for actively optimizing, adjusting and controlling distributed wind power plant provided with energy-storage power station |
| CN104612898B (en) * | 2014-11-27 | 2017-09-08 | 江苏科技大学 | A kind of wind electricity change paddle is away from Multivariable Fuzzy NN-PID Control Method |
| CN109412210A (en) * | 2018-10-25 | 2019-03-01 | 中国船舶重工集团海装风电股份有限公司 | A kind of Wind turbines active power fining adjusting method |
| CN109973302A (en) * | 2017-12-28 | 2019-07-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
| CN110925134A (en) * | 2019-12-03 | 2020-03-27 | 上海明华电力科技有限公司 | System and method for correcting given output power value of wind turbine generator in real time |
| CN112803496A (en) * | 2021-03-02 | 2021-05-14 | 国电电力内蒙古新能源开发有限公司 | Power quick response method for cooperative control of multiple wind turbine generators |
| CN113839461A (en) * | 2020-06-23 | 2021-12-24 | 北京国电思达科技有限公司 | Wind power plant power management system and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748216A (en) * | 2012-07-13 | 2012-10-24 | 国电联合动力技术有限公司 | Method, system and device for regulating active power of wind power generator unit |
| WO2014201849A1 (en) * | 2013-06-18 | 2014-12-24 | 国网辽宁省电力有限公司电力科学研究院 | Method for actively optimizing, adjusting and controlling distributed wind power plant provided with energy-storage power station |
| CN103397983A (en) * | 2013-07-18 | 2013-11-20 | 上海交通大学 | Method of active power and speed control for variable speed wind turbines |
| CN103397983B (en) * | 2013-07-18 | 2015-10-14 | 上海交通大学 | Speed-changing draught fan active power controller and method for controlling number of revolution |
| CN104612898B (en) * | 2014-11-27 | 2017-09-08 | 江苏科技大学 | A kind of wind electricity change paddle is away from Multivariable Fuzzy NN-PID Control Method |
| CN109973302A (en) * | 2017-12-28 | 2019-07-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
| CN109973302B (en) * | 2017-12-28 | 2020-05-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
| CN109412210A (en) * | 2018-10-25 | 2019-03-01 | 中国船舶重工集团海装风电股份有限公司 | A kind of Wind turbines active power fining adjusting method |
| CN110925134A (en) * | 2019-12-03 | 2020-03-27 | 上海明华电力科技有限公司 | System and method for correcting given output power value of wind turbine generator in real time |
| CN110925134B (en) * | 2019-12-03 | 2021-06-18 | 上海明华电力科技有限公司 | System and method for correcting given output power value of wind turbine generator in real time |
| CN113839461A (en) * | 2020-06-23 | 2021-12-24 | 北京国电思达科技有限公司 | Wind power plant power management system and method |
| CN112803496A (en) * | 2021-03-02 | 2021-05-14 | 国电电力内蒙古新能源开发有限公司 | Power quick response method for cooperative control of multiple wind turbine generators |
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