CN105781876A - Control method for limited-power and limited-rotational-speed running of wind turbine generator system - Google Patents
Control method for limited-power and limited-rotational-speed running of wind turbine generator system Download PDFInfo
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- CN105781876A CN105781876A CN201610108950.5A CN201610108950A CN105781876A CN 105781876 A CN105781876 A CN 105781876A CN 201610108950 A CN201610108950 A CN 201610108950A CN 105781876 A CN105781876 A CN 105781876A
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- power
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1033—Power (if explicitly mentioned)
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to the field of wind turbine generator systems, and discloses a control method for limited-power and limited-rotational-speed running of a wind turbine generator system. The control method comprises the following steps: an initial power and an end power of the limited-power and limited-rotational-speed running of the wind turbine generator system are set; the lowest rotational speed of the limited-power and limited-rotational-speed running of the wind turbine generator system, and the lowest power corresponding to the lowest rotational speed are set; a given power value of the limited-power and limited-rotational-speed running of the wind turbine generator system is obtained; when the given power value is less than or equal to the lowest power, a given rotational speed value of the wind turbine generator system is the lowest rotational speed; when the given power value is greater than the lowest power and less than the initial power, the given rotational speed value of the wind turbine generator system is directly proportional to the given power value; and when the given power value is greater than or equal to the initial power and less than the end power, the given rotational speed value of the wind turbine generator system is a rated rotational speed.
Description
Technical field
The present invention relates to wind power generating set field, particularly relate to the control method that a kind of wind power generating set limit power limit rotating speed runs, in MW level variable-pitch variable-speed wind generating unit, the limit Power operation carrying out wind power generating set controls.
Background technology
In variable-pitch variable-speed wind generating unit running process, rotating speed and the power of unit is controlled by pitch control device and torque controller, when wind speed exceedes the rated wind speed of wind power generating set, the output of wind power generating set is controlled in rated power, and rotating speed is controlled in rated speed and runs.
Owing to wind energy turbine set external electrical network such as is rationed the power supply at the reason, it is necessary to wind power generating set in wind energy turbine set to be carried out limit Power operation；And when wind farm wind velocity is extra high, rationing the power supply can be very serious, with a single-machine capacity for the wind energy turbine set that 2MW total capacity is 50,000 kilowatts, during strong wind, single-machine capacity is even limited in 100kW operation.
Current limit Power operation control method is the given of power limitation; but the rotating speed of wind power generating set is also maintained at rated speed; when strong wind and unit power of the assembling unit export-restriction are very low; the rotating speed making wind power generating set controls relatively difficult; run into extreme wind speed and unit breaks down when shutting down; easilying lead to unit hypervelocity, even trigger theft-resistant link chain overspeed protection, harm and potential risks to unit are very big.
Summary of the invention
For the problems referred to above; it is an object of the invention to provide the control method that a kind of wind power generating set limit power limit rotating speed runs; can when strong wind and unit power of the assembling unit export-restriction be very low; the rotating speed controlling value making wind power generating set reduces; add the difference between the current rotating speed controlling value of large-sized unit and overspeed protection value; when run into extreme wind speed and unit break down shutdown time, be not result in unit overspeed protection, eliminate the harm to unit.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that and are achieved.
The control method that a kind of wind power generating set limit power limit rotating speed runs, described method includes:
Setting initial power, end power that wind power generating set limit power limit rotating speed runs, described initial power is less than described end power, and described end power is less than the rated power of wind power generating set；
Setting the lowest power that the minimum speed of wind power generating set limit power limit rotating speed operation is corresponding with described minimum speed, described minimum speed is less than the rated speed of wind power generating set, and described lowest power is less than described initial power and more than zero；
Obtain the power set-point that wind power generating set limit power limit rotating speed runs；
When described power set-point is less than or equal to described lowest power, the rotary speed setting value of wind power generating set is described minimum speed；
When described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship；
When described power set-point is more than or equal to described initial power and less than described end power, the rotary speed setting value of wind power generating set is described rated speed.
The feature of technical solution of the present invention and being further improved to:
(1) when described power set-point is more than or equal to described end power, wind power generating set exits the control that limit power limit rotating speed runs.
(2) described initial power is the 80% of described rated power, and described end power is the 90% of described rated power.
(3) described minimum speed is the 80% of described rated speed.
(4) when described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship, its slope is the ratio of described first difference and described second difference, described first difference is the difference of described rated speed and described minimum speed, and described second difference is the difference of described initial power and described lowest power.
The present invention having the beneficial effect that and can carry out the tachometer value of Based Intelligent Control wind-driven generator unit according in real time limit power set-point compared with prior art, carry out the size of dynamic limit rotating speed according to the size of limit power set-point, improve Control platform and the stability of unit.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the control method that the wind power generating set limit power limit rotating speed that Fig. 1 provides for the embodiment of the present invention runs；
The relation schematic diagram of tachometer value and performance number when Fig. 2 runs for the wind power generating set limit power limit rotating speed that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The embodiment of the present invention provides a kind of wind power generating set control method that limit power limit rotating speed runs, as it is shown in figure 1, described method includes:
Step 1, sets initial power, end power that wind power generating set limit power limit rotating speed runs.
Described initial power is less than described end power, and described end power is less than the rated power of wind power generating set.
Step 2, sets the lowest power that the minimum speed of wind power generating set limit power limit rotating speed operation is corresponding with described minimum speed.
Described minimum speed is less than the rated speed of wind power generating set, and described lowest power is less than described initial power and more than zero.
Step 3, obtains the power set-point that wind power generating set limit power limit rotating speed runs.
Step 4, when described power set-point is less than or equal to described lowest power, the rotary speed setting value of wind power generating set is described minimum speed；
When described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship；
When described power set-point is more than or equal to described initial power and less than described end power, the rotary speed setting value of wind power generating set is described rated speed.
Concrete, when described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship, its slope is the ratio of described first difference and described second difference, described first difference is the difference of described rated speed and described minimum speed, and described second difference is the difference of described initial power and described lowest power.
You need to add is that, when described power set-point is more than or equal to described end power, wind power generating set exits the control that limit power limit rotating speed runs.
Concrete, described initial power is the 80% of described rated power, and described end power is the 90% of described rated power.Described minimum speed is the 80% of described rated speed.
In the embodiment of the present invention, the setting of initial power, end power and minimum speed can select according to practical situation.
Exemplary, as shown in Figure 2, the wind power generating set tachometer value provided for the embodiment of the present invention and performance number relation schematic diagram, abscissa is performance number, vertical coordinate is corresponding tachometer value, D point is the rated power Prated of wind power generating set, B point is 80% (i.e. the initial power Pstart of limit power limit rotating speed) of rated power, C point is 90% (i.e. the end power P end of limit power limit rotating speed) of rated power, F point is the rated speed Srated of wind power generating set, E point is 80% (i.e. the minimum speed Smin of limit power limit rotating speed) of rated speed, A point is lowest power Pmin corresponding for minimum speed value Smin.
As the power set-point≤A of wind power generating set, tachometer value is limited on tachometer value E.
During as the power set-point > A of wind power generating set and less than B, the control of rotating speed-power is controlled according to the straight line between point (A, E) and point (B, F).The control of rotating speed-power is controlled according to the straight line of fixed slope, the set-point of one the rotating speed control of correspondence that the real-time limit performance number of the given unit unit of wind energy turbine set can be real-time；For avoiding rotational speed setup change too fast, cause that unit allocation is unstable, increase a wave filter and prevent the Rapid Variable Design of rotating speed, with the maximum of limit rotation speed change, it is ensured that wind power generating set rotating speed controls stable.
As power set-point >=B and the < C of wind power generating set, tachometer value is limited on tachometer value F.
As the power set-point >=C of wind power generating set, exit limit power limit rotating speed functions.
The control method that a kind of wind power generating set limit power limit rotating speed that the embodiment of the present invention provides runs; can when strong wind and unit power of the assembling unit export-restriction be very low; the rotating speed controlling value making wind power generating set reduces; add the difference between the current rotating speed controlling value of large-sized unit and overspeed protection value; when run into extreme wind speed and unit break down shutdown time; it is not result in unit overspeed protection, eliminates the harm to unit.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (5)
1. the control method that a wind power generating set limit power limit rotating speed runs, it is characterised in that described method includes:
Setting initial power, end power that wind power generating set limit power limit rotating speed runs, described initial power is less than described end power, and described end power is less than the rated power of wind power generating set；
Setting the lowest power that the minimum speed of wind power generating set limit power limit rotating speed operation is corresponding with described minimum speed, described minimum speed is less than the rated speed of wind power generating set, and described lowest power is less than described initial power and more than zero；
Obtain the power set-point that wind power generating set limit power limit rotating speed runs；
When described power set-point is less than or equal to described lowest power, the rotary speed setting value of wind power generating set is described minimum speed；
When described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship；
When described power set-point is more than or equal to described initial power and less than described end power, the rotary speed setting value of wind power generating set is described rated speed.
2. the control method that a kind of wind power generating set according to claim 1 limit power limit rotating speed runs, it is characterised in that when described power set-point is more than or equal to described end power, wind power generating set exits the control that limit power limit rotating speed runs.
3. the control method that a kind of wind power generating set according to claim 1 limit power limit rotating speed runs, it is characterised in that described initial power is the 80% of described rated power, and described end power is the 90% of described rated power.
4. the control method that a kind of wind power generating set according to claim 1 limit power limit rotating speed runs, it is characterised in that described minimum speed is the 80% of described rated speed.
5. the control method that a kind of wind power generating set according to claim 1 limit power limit rotating speed runs, it is characterized in that, when described power set-point is more than described lowest power and less than described initial power, the rotary speed setting value of wind power generating set and described power set-point are proportional relationship, its slope is the ratio of described first difference and described second difference, described first difference is the difference of described rated speed and described minimum speed, and described second difference is the difference of described initial power and described lowest power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108950.5A CN105781876A (en) | 2016-02-26 | 2016-02-26 | Control method for limited-power and limited-rotational-speed running of wind turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610108950.5A CN105781876A (en) | 2016-02-26 | 2016-02-26 | Control method for limited-power and limited-rotational-speed running of wind turbine generator system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589765A (en) * | 2017-09-08 | 2018-01-16 | 苏州博思得电气有限公司 | Control method and device, the drive device of the rotation electrode of X-ray tube |
| 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 |
| CN110219776A (en) * | 2019-06-12 | 2019-09-10 | 风脉能源（武汉）股份有限公司 | A kind of searching method in wind power generating set dynamic rated power section |
| CN112283025A (en) * | 2020-10-14 | 2021-01-29 | 明阳智慧能源集团股份公司 | Control method for preventing wind turbine generator from operating in resonance region in limited power mode |
| CN112392656A (en) * | 2019-08-16 | 2021-02-23 | 北京金风科创风电设备有限公司 | Power control method, apparatus and medium |
| CN113007019A (en) * | 2019-12-19 | 2021-06-22 | 新疆金风科技股份有限公司 | Controller, control system and wind generating set |
| CN113090453A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Control method and device of wind generating set and wind generating set |
| CN113847195A (en) * | 2020-06-28 | 2021-12-28 | 北京金风科创风电设备有限公司 | Wind power generating set and its avoidance speed control method and device |
| CN114576075A (en) * | 2022-03-09 | 2022-06-03 | 清华大学 | A limiter protection method, device and electronic equipment for a wave power generation device |
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| CN113090453A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Control method and device of wind generating set and wind generating set |
| CN113090453B (en) * | 2019-12-23 | 2023-03-03 | 新疆金风科技股份有限公司 | Control method and device of wind generating set and wind generating set |
| CN113847195A (en) * | 2020-06-28 | 2021-12-28 | 北京金风科创风电设备有限公司 | Wind power generating set and its avoidance speed control method and device |
| WO2022001250A1 (en) * | 2020-06-28 | 2022-01-06 | 北京金风科创风电设备有限公司 | Wind turbine generator system, and rotation speed avoidance control method and apparatus therefor |
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| CN112283025A (en) * | 2020-10-14 | 2021-01-29 | 明阳智慧能源集团股份公司 | Control method for preventing wind turbine generator from operating in resonance region in limited power mode |
| CN114576075A (en) * | 2022-03-09 | 2022-06-03 | 清华大学 | A limiter protection method, device and electronic equipment for a wave power generation device |
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