LU502917B1 - A crosswind yawing control system, a method and a generator set of wind turbine generator sets - Google Patents
A crosswind yawing control system, a method and a generator set of wind turbine generator sets Download PDFInfo
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- LU502917B1 LU502917B1 LU502917A LU502917A LU502917B1 LU 502917 B1 LU502917 B1 LU 502917B1 LU 502917 A LU502917 A LU 502917A LU 502917 A LU502917 A LU 502917A LU 502917 B1 LU502917 B1 LU 502917B1
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- crosswind
- wind
- module
- turbine generator
- wind direction
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 18
- 230000008859 change Effects 0.000 claims abstract description 14
- 238000012790 confirmation Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000011295 pitch Substances 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
- F03D7/0268—Parking or storm protection
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/024—Adjusting aerodynamic properties of the blades of individual blades
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
- F03D7/0292—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power to reduce fatigue
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
- F03D7/044—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with PID control
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The present invention discloses a crosswind yawing control system, a method and a generator set of wind turbine generator sets, which relates to the technical field of wind power generation and comprises a general control module, a rotating speed collection module, a brake system confirmation module, a wind direction collection module, a wind direction change judgment module, a first execution module and a second execution module. The present invention 1) can control the wind turbine generator set even if the brake system fails as a whole; 2) can keep the consistency between the wind direction and crosswind operation, to improve the response rate of wind direction and the environmental adaptation of the yawing system, given the constantly changing wind direction during the crosswind process.
Description
BL-5571 :
LU502917
A CROSSWIND YAWING CONTROL SYSTEM, A METHOD AND A
GENERATOR SET OF WIND TURBINE GENERATOR SETS
The present invention relates to the technical field of wind power generation, in particular to a crosswind yawing control system, a method and a generator set of wind turbine generator sets.
When the wind turbine speed exceeds the speed set by the overspeed protection module and continues to rise, a severe overspeed incident may occur. Severe overspeed of the wind turbine will lead to the "overrun" incident, a typical malignant accident in wind power stations, often with devastating loss of the whole set. Severe overspeed incidents are mainly caused by sudden load rejection during operation, disconnection between the generator and the system, excessive parameter setting of the overspeed protection module, fault of the speed sensor, the braking system or the pitch control system, or improper control of wind turbine overspeed experiment. In addition, due to the frequently changing wind direction, if the impeller sweeping surface of the wind turbine generator set is not vertical to the wind direction, the power output will be reduced. The yawing system serves the purpose of monitoring the wind direction, and drive the engine room to rotate around the center line of the tower, to obtain the maximum wind energy.
Considering the uncertainty existing in equipment reliability and environmental adaptation, the possibility of whole failure may still exist in the brake system. And if the brake system fails as a whole, the rotating speed of the wind turbine generator set cannot be controlled, eventually causing the overrun incident.
Incidents such as fire caused by brake disc friction may be easily caused by the
BL-5571
LU502917 overrun incident of the wind turbine generator set, leading to serious damage to the generator sets.
Therefore, an urgent issue to be solved by those skilled in this field is to provide a crosswind yawing control system, a method and a generator set of wind turbine generator sets to solve the difficulties existing in the prior art.
In view of this, the present invention provides a crosswind yawing control system, a method and a generator set of wind turbine generator sets, which can shut down the wind turbine generator set if the brake system fails as a whole, to avoid the occurrence of overrun incidents.
To achieve the above purpose, the present invention is implemented with the following technical scheme:
A crosswind yawing control system for wind turbine generator sets, which comprises a general control module, a rotating speed collection module, a brake system confirmation module, a wind direction collection module, a wind direction change judgment module, a first execution module and a second execution module; the said general control module is respectively connected with the said rotating speed collection module, the said brake system confirmation module, the said wind direction collection module, the said wind direction change judgment module, the said first execution module and the said second execution module; the said rotating speed collection module records the real-time rotating speed of the wind turbine generator set; the said general control module triggers an emergency stop fault by the rotating speed of the said wind turbine generator set and sends the instruction to make the said brake system confirmation module decide whether the brake system failed or not;
BL-5571
LU502917 the said wind direction collection module collects information of the current wind angle, and then delivered it to the said general control module; the said first execution module collects the information of the current wind angle to calculate the initial crosswind position in case the said brake system fails, so that the yawing system of the said wind turbine generator set can execute the crosswind operation according to the said initial crosswind position; the said wind direction change judgment module judges whether the wind direction changes abruptly and sents the judgement results to the said general control module; the said second execution module calculates the updated crosswind position in case the said wind direction changes abruptly, and then the said yawing system can perform the crosswind operation according to the said updated crosswind position.
In the above system, optionally, the said wind direction change judgment module comprises a crosswind process calculation unit and a judgment unit connected in turn; the said crosswind process calculation unit, used for the collection of the wind direction data, will process the data with long cycle filtering treatment, and work out the average wind angle; and it will also process the said data with short cycle filtering treatment, and work out the instantaneous wind angle; the said judgment unit will judge whether the wind direction changes abruptly, according to the said average wind angle and the instantaneous wind angle.
In the above system, optionally, the said judgment unit is specifically used to calculate the difference between the said average wind angle and the said instantaneous wind angle; if the said difference is greater than the preset threshold value, the wind direction is judged to have changed abruptly.
BL-5571
LU502917
A crosswind yawing control method for wind turbine generator sets, which is applied to any crosswind yawing control system for wind turbine generator sets according to any one of the Claims, comprising the following steps:
S101 An emergency stop fault is triggered by the rotating speed in the said wind turbine generator set;
S201 Confirm whether the brake system of the said wind turbine generator set fails;
S301 If the said brake system fails, calculate the initial crosswind position based on the current wind angle, to ensure that the yawing system of the said wind turbine generator set can perform crosswind operation according to the initial crosswind position;
S401 Judge whether the wind direction is abruptly changed;
S501 If the wind direction changed abruptly, calculate the updated crosswind position based on the average wind angle, to ensure that the yawing system can perform the crosswind operation according to the said updated crosswind position.
In the above method, optionally, the said S401 specifically comprises the following steps:
S4011 Perform long cycle filtering treatment on the wind direction data collected from crosswind process to work out the average wind angle and perform short cycle filtering treatment on the said wind direction data to work out the instantaneous wind angle;
S4012 Judge whether the wind direction is abruptly changed according to the said average wind angle and the said instantaneous wind angle.
In the above method, optionally, the specific content of the said S4012 is
BL-5571
LU502917 calculating the difference between the said average wind angle and the said instantaneous wind angle; and if the said difference is greater than the preset threshold value, the wind direction is judged to have changed abruptly.
A wind turbine generator set, which comprises a crosswind yawing control 5 system of wind turbine generator sets according to any one of the above Claims.
It can be seen from the above technical scheme that, compared with the prior art, the present invention provides a crosswind yawing control system, a method and a generator set of wind turbine generator sets, which 1) can control the wind turbine generator set even if the brake system fails as a whole; 2) can keep the consistency between the wind direction and crosswind operation, to improve the response rate of wind direction and the environmental adaptation of the yawing system, given the constantly changing wind direction during the crosswind process.
To better describe the embodiments of the present invention or the technical scheme of the prior art, a brief introduction of the accompanying drawings to be used in the descriptions of the embodiments or the prior art is made hereby. Obviously, the drawings below are only the embodiments of the present invention, and for those ordinarily skilled in the art, other drawings based on such drawings can be obtained without making creative endeavors.
Figure 1 is a structure diagram of a crosswind yawing control system for wind turbine generator sets provided by the present invention;
Figure 2 is a structural diagram of wind direction change judgment module provided by the present invention;
Figure 3 is a flowchart of a crosswind yawing control method for wind turbine generator sets provided by the present invention;
BL-5571
LU502917
Figure 4 is the specific steps of S401 provided by the present invention;
Figure 5 is an initial electrical layout diagram of the present invention;
Figure 6 is an installment layout diagram of the newly added safety relay and safety reset relay of the present invention.
The technical scheme in the embodiments of the present invention is clearly and completely described below in combination with the drawings thereof.
Obviously, the embodiments 1s just a part of embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all the other embodiments obtained by those ordinarily skilled in the art without making creative endeavors shall fall into the scope of protection of the present invention.
Referring to Figure 1, the present invention discloses a crosswind yawing control system for wind turbine generator sets, which comprises a general control module, a rotating speed collection module, a brake system confirmation module, a wind direction collection module, a wind direction change judgment module, a first execution module and a second execution module; the general control module is respectively connected with the rotating speed collection module, the brake system confirmation module, the wind direction collection module, the wind direction change judgment module, the first execution module and the second execution module; the rotating speed collection module records the real-time rotating speed of the wind turbine generator set; the general control module triggers an emergency stop fault by the rotating speed of the wind turbine generator set and sends the instruction to make the brake system confirmation module decide whether the brake system failed or not;
BL-5571
LU502917 the wind direction collection module collects information of the current wind angle, and then delivered it to the general control module; the first execution module collects the information of the current wind angle to calculate the initial crosswind position in case the brake system fails, so that the yawing system of the wind turbine generator set can execute the crosswind operation according to the initial crosswind position; the wind direction change judgment module judges whether the wind direction changes abruptly and sents the judgement results to the general control module; the second execution module calculates the updated crosswind position in case the wind direction changes abruptly, and then the yawing system can perform the crosswind operation according to the updated crosswind position.
Further, as shown in Figure 2, the wind direction change judgment module comprises a crosswind process calculation unit and a judgment unit connected in turn;
The crosswind process calculation unit, used for the collection of the wind direction data, will process the data with long cycle filtering treatment, and work out the average wind angle; and it will also process the said data with short cycle filtering treatment, and work out the instantaneous wind angle; the judgment unit will judge whether the wind direction changes abruptly, according to the said average wind angle and the instantaneous wind angle.
Further, the judgment unit 1s specifically used for calculating the difference between the average wind angle and the instantaneous wind angle; and if the difference is greater than the preset threshold value, the wind direction is judged to have changed abruptly.
Referring to Figure 3, the present invention discloses a crosswind yawing control method for wind turbine generator sets, which is applied to a crosswind
BL-5571
LU502917 yawing control system for wind turbine generator sets and specifically comprises the following steps:
S101 An emergency stop fault is triggered by the rotating speed in the wind turbine generator set;
S201 Confirm whether the brake system of the wind turbine generator set fails;
S301 If the brake system fails, calculate the initial crosswind position based on the current wind angle, to ensure that the yawing system of the wind turbine generator set can perform crosswind operation according to the initial crosswind position;
S401 Judge whether the wind direction is abruptly changed;
S501 If the wind direction changed abruptly, calculate the updated crosswind position based on the average wind angle, to ensure that the yawing system can perform the crosswind operation according to the updated crosswind position.
Further, as shown in Figure 4, S401 specifically comprises the following steps:
S4011 Perform long cycle filtering treatment on the wind direction data collected from crosswind process to work out the average wind angle and perform short cycle filtering treatment on the wind direction data to work out the instantaneous wind angle;
S4012 Judge whether the wind direction changes abruptly based on the average wind angle and instantaneous wind angle.
Further, the specific content of S4012 is calculating the difference between the average wind angle and the instantaneous wind angle; and if the difference is greater than the preset threshold value, the wind direction 1s judged to have changed abruptly.
BL-5571
LU502917
The present invention also discloses a wind turbine generator set, which comprises a crosswind yawing control system of wind turbine generator sets as described above.
In a specific embodiments, in terms of the control of safe performance of a direct-drive 1.5MW wind turbine, a safety relay and a new safety chain reset relay are used for electrical control. If the safety chain is broken due to the occurrence of internal faults of pitches or extreme weather, the wind turbine generator set will be shut down. If the safety relay detects an excessively high rotating speed, the yawing relay will be energized, and the engine room starts yawing, reducing the rotating speed of the impeller. This can prevent overrun incidents to a certain extent, and make routine maintenance easier at the same time.
The specific operation process is as follows: 1. After safety shutdown, the micro circuit breakers 108F5 and 108F6 of the 24VDC power supply, the micro circuit breaker 108Q2 of the 24VDC UPS, and the isolating switch 101S2 of the engine room would be cut off from the power supply.
The cut-off status shall be remained before the transformation is completed in case of the risk of electric shock. 2. As shown in Figure 5, use a terminal plier to remove two terminal fasteners and the wiring of relay 114K9, and remove the relay from the slide rail. Two 24V
UPS modules and the safety relay 122K4 are moved to the left by about 10mm, while relays 113K 6 and 113K7 are moved to the right by about 40mm in accordance with actual situations. Meanwhile, installation space should be reserved for new safety relays and reset relays, and vents of the wiring slot are reconverted for corresponding cables to keep them vertical and neat. 3. A new safety relay 123K3 and a new safety chain reset relay 114K9 are installed on the vacated guide rail in turn. Equipment on the left and right sides are compressed towards the middle for compact arrangement, and finally the two
BL-5571
LU502917 terminal fasteners are reinstalled. As shown in Figure 6, the newly added safety relay and safety reset relay are installed in this way.
On the premise of not changing any control procedures, by installing a new safety relay and a new safety chain reset relay, the engine room can face the wind direction at an angle of 90 degrees when the wind turbine overspeeds and the safety chain is broken under extreme weather conditions, thus reducing the rotating speed of the wind turbine generator set and avoiding the occurrence of overrun incidents.
The above description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the essence or the scope of the present invention. Accordingly, the present invention will not be limited to the embodiments described herein, but will cover the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
- BL-5571 LU502917 CLAIMSI. A crosswind yawing control system for wind turbine generator sets, characterized in that, the system comprises a general control module, a rotating speed collection module, a brake system confirmation module, a wind direction collection module, a wind direction change judgment module, a first execution module and a second execution module; the said general control module is respectively connected with the said rotating speed collection module, the said brake system confirmation module, the said wind direction collection module, the said wind direction change judgment module, the said first execution module and the said second execution module; the said rotating speed collection module records the real-time rotating speed of the wind turbine generator set; the said general control module triggers an emergency stop fault by the rotating speed of the said wind turbine generator set and sends the instruction to make the said brake system confirmation module decide whether the brake system failed or not; the said wind direction collection module collects information of the current wind angle, and then delivered it to the said general control module; the said first execution module collects the information of the current wind angle to calculate the initial crosswind position in case the said brake system fails, so that the yawing system of the said wind turbine generator set can execute the crosswind operation according to the said initial crosswind position; the said wind direction change judgment module judges whether the wind direction changes abruptly and sents the judgement results to the said general control module;BL-5571 LU502917 the said second execution module calculates the updated crosswind position in case the said wind direction changes abruptly, and then the said yawing system can perform the crosswind operation according to the said updated crosswind position.
- 2. A crosswind yawing control system for wind turbine generator sets according to Claim 1, characterized in that, the said wind direction change judgment module comprises a crosswind process calculation unit and a judgment unit connected in turn; the said crosswind process calculation unit, used for the collection of the wind direction data, will process the data with long cycle filtering treatment, and work out the average wind angle; and it will also process the said data with short cycle filtering treatment, and work out the instantaneous wind angle; the said judgment unit will judge whether the wind direction changes abruptly, according to the said average wind angle and the instantaneous wind angle.
- 3. A crosswind yawing control system for wind turbine generator sets according to Claim 2, characterized in that, the said judgment unit is specifically used to calculate the difference between the average wind angle and the instantaneous wind angle; if the said difference is greater than the preset threshold value, the wind direction is judged to have changed abruptly.
- 4. A crosswind yawing control method for wind turbine generator sets, characterized in that, it is applied to any crosswind yawing control system for wind turbine generator sets according to any one of Claims 1-3, comprising the following steps: S101 An emergency stop fault is triggered by the rotating speed in the said wind turbine generator set;BL-5571 LU502917 S201 Confirm whether the brake system of the said wind turbine generator set fails; S301 If the said brake system fails, calculate the initial crosswind position based on the current wind angle, to ensure that the yawing system of the said wind turbine generator set can perform crosswind operation according to the initial crosswind position; S401 Judge whether the wind direction is abruptly changed; S501 If the wind direction changed abruptly, calculate the updated crosswind position based on the average wind angle, to ensure that the yawing system can perform the crosswind operation according to the said updated crosswind position.
- 5. A crosswind yawing control method for wind turbine generator sets according to Claim 4, characterized in that, the said S401 comprises the following steps: S4011 Perform long cycle filtering treatment on the wind direction data collected from crosswind process to work out the average wind angle and perform short cycle filtering treatment on the said wind direction data to work out the instantaneous wind angle; S4012 Judge whether the wind direction is abruptly changed according to the said average wind angle and the said instantaneous wind angle.
- 6. A crosswind yawing control method for wind turbine generator sets according to Claim 5, characterized in that, the specific content of the said S4012 is calculating the difference between the said average wind angle and the said instantaneous wind angle; and if the said difference is greater than the preset threshold value, the wind direction is judged to have changed abruptly.BL-5571 LU502917
- 7. A wind turbine generator set, characterized in that, it comprises a crosswind yawing control system of wind turbine generator sets according to any one of the Claims 1-3.
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CN202211099254.4A CN115614220A (en) | 2022-09-08 | 2022-09-08 | Wind generating set side wind yaw control system and method and generating set |
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CN116292140B (en) * | 2023-03-24 | 2023-10-27 | 华能酒泉风电有限责任公司 | Monitoring control method and monitoring control device for wind driven generator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108518306A (en) * | 2018-03-05 | 2018-09-11 | 北京金风慧能技术有限公司 | Wind power generating set runaway control system, method and apparatus |
US20190234377A1 (en) * | 2018-01-29 | 2019-08-01 | Jiangsu Goldwind Science & Technology Co., Ltd. | Method and apparatus for yaw control of wind turbine under typhoon |
EP3557047A1 (en) * | 2018-03-01 | 2019-10-23 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Overspeed preventing control method and apparatus, and wind turbine |
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2022
- 2022-09-08 CN CN202211099254.4A patent/CN115614220A/en active Pending
- 2022-10-18 LU LU502917A patent/LU502917B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190234377A1 (en) * | 2018-01-29 | 2019-08-01 | Jiangsu Goldwind Science & Technology Co., Ltd. | Method and apparatus for yaw control of wind turbine under typhoon |
EP3557047A1 (en) * | 2018-03-01 | 2019-10-23 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Overspeed preventing control method and apparatus, and wind turbine |
CN108518306A (en) * | 2018-03-05 | 2018-09-11 | 北京金风慧能技术有限公司 | Wind power generating set runaway control system, method and apparatus |
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