CN-115898760-B - Wind turbine generator load control method, device, computer readable medium and equipment

CN115898760BCN 115898760 BCN115898760 BCN 115898760BCN-115898760-B

Abstract

The application provides a load control method, a load control device, a computer readable medium and computer readable equipment for a wind turbine generator, and relates to the technical field of wind power generation, wherein the method comprises the steps of acquiring the ambient wind speed and the wind direction at the current moment in real time; and if the wind speed is greater than the wind speed threshold value and the wind direction is greater than the wind direction threshold value, controlling the output torque of the wind turbine generator to be a target torque, wherein the target torque is lower than the preset output torque of the wind turbine generator. According to the method, the environment wind speed and the wind direction of the wind turbine can be obtained in real time, when the current wind speed and the wind direction are determined to meet the preset wind condition and are respectively larger than the preset wind speed threshold value and the wind direction threshold value, the output torque of the wind turbine is controlled to be reduced, so that the load of the wind turbine is reduced, the loss of the wind turbine component caused by the extreme wind condition is reduced, and the service life of the wind turbine component is prolonged.

Inventors

WANG LI
ZHANG LINZHONG
ZHANG GUOQIANG
XIE BINGBING

Assignees

国电联合动力技术有限公司

Dates

Publication Date: 20260508
Application Date: 20221107

Claims (9)

1. The load control method of the wind turbine generator is characterized by comprising the following steps of: acquiring the ambient wind speed and the wind direction at the current moment in real time; under the condition that the wind speed and the wind direction meet the preset wind conditions, respectively matching the wind speed and the wind direction with a preset wind speed threshold value and a preset wind direction threshold value; If the wind speed is greater than the wind speed threshold value and the wind direction is greater than the wind direction threshold value, controlling the output torque of the wind turbine generator to be a target torque, wherein the target torque is lower than the preset output torque of the wind turbine generator; The wind speed threshold value comprises a first wind speed threshold value and a second wind speed threshold value, the first wind speed threshold value is smaller than the second wind speed threshold value, the wind direction threshold value comprises a first wind direction threshold value and a second wind direction threshold value, the first wind direction threshold value is smaller than the second wind direction threshold value, and if the wind speed is larger than the wind speed threshold value and the wind direction is larger than the wind direction threshold value, the control of the output torque of the wind turbine generator set to be the target torque comprises the following steps: If the wind speed is greater than the first wind speed threshold value and is smaller than the second wind speed threshold value, and the wind direction is greater than the first wind direction threshold value and is smaller than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a first target torque; If the wind speed is greater than the second wind speed threshold value and the wind direction is greater than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a second target torque; the first target torque is greater than the second target torque, and the first target torque is less than the preset output torque.
2. The wind turbine load control method of claim 1, wherein after controlling the output torque of the wind turbine to be the target torque, the method further comprises: and continuously acquiring the ambient wind speed and the wind direction until the acquired wind speed is not greater than the wind speed threshold value and/or the acquired wind direction is not greater than the wind direction threshold value, and controlling the output torque of the wind turbine generator to be the preset output torque.
3. The wind turbine load control method of claim 1, wherein determining whether the wind speed and the wind direction meet a preset wind condition comprises: acquiring the historical wind speeds and the historical wind directions of n continuous historical moments before the current moment; determining a wind speed difference between the wind speed and each of the historical wind speeds, and determining a wind direction difference between the wind direction and each of the historical wind directions; If a wind speed difference larger than a preset wind speed difference threshold exists, and a wind direction difference larger than a preset wind direction difference threshold exists, determining that the wind speed and the wind direction meet preset wind conditions.
4. The wind turbine load control method of claim 1, wherein determining whether the wind speed and the wind direction meet a preset wind condition comprises: acquiring the historical wind speeds and the historical wind directions of n continuous historical moments before the current moment; determining an average wind speed value of all the historical wind speeds and an average wind direction value of all the historical wind directions; Determining a wind speed difference between the wind speed and the average wind speed, and determining a wind direction difference between the wind direction and the average wind direction; Matching the wind speed difference with a preset wind speed difference threshold value, and matching the wind direction difference with a preset wind direction difference threshold value difference; And if the wind speed difference is larger than the wind speed difference threshold value and the wind direction difference is larger than the wind direction difference threshold value, determining that the wind speed and the wind direction meet a preset wind condition.
5. The wind turbine load control method of claim 1, wherein determining whether the wind speed and the wind direction meet a preset wind condition comprises: matching the wind speed and the wind direction with a preset wind condition table or a preset wind condition curve, and if the wind speed and the wind direction can be matched with the wind condition table or the wind condition curve, determining that the wind speed and the wind direction meet the preset wind condition; the wind condition table or the wind condition curve at least comprises mapping relations between different wind speeds and corresponding wind directions which meet preset wind conditions.
6. The wind turbine load control method according to claim 4, wherein the preset wind condition is an ECD wind condition, the preset wind condition table is an ECD wind condition table, and the preset wind condition curve is an ECD wind condition curve; the ECD wind condition table or the ECD wind condition curve at least comprises mapping relations between different wind speeds and corresponding wind directions which meet ECD wind conditions.
7. The utility model provides a wind turbine generator system load control device which characterized in that includes: The data acquisition module is configured to acquire the ambient wind speed and the wind direction at the current moment in real time; The output torque control module is configured to match the wind speed and the wind direction with a preset wind speed threshold value and a preset wind direction threshold value respectively under the condition that the wind speed and the wind direction meet preset wind conditions; If the wind speed is greater than the wind speed threshold value and the wind direction is greater than the wind direction threshold value, controlling the output torque of the wind turbine generator to be a target torque, wherein the target torque is lower than the preset output torque of the wind turbine generator; The wind speed threshold value comprises a first wind speed threshold value and a second wind speed threshold value, the first wind speed threshold value is smaller than the second wind speed threshold value, the wind direction threshold value comprises a first wind direction threshold value and a second wind direction threshold value, the first wind direction threshold value is smaller than the second wind direction threshold value, and if the wind speed is larger than the wind speed threshold value and the wind direction is larger than the wind direction threshold value, the control of the output torque of the wind turbine generator set to be the target torque comprises the following steps: If the wind speed is greater than the first wind speed threshold value and is smaller than the second wind speed threshold value, and the wind direction is greater than the first wind direction threshold value and is smaller than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a first target torque; If the wind speed is greater than the second wind speed threshold value and the wind direction is greater than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a second target torque; the first target torque is greater than the second target torque, and the first target torque is less than the preset output torque.
8. A computer readable medium storing a computer program, wherein the computer program when executed by a processor implements the wind turbine load control method according to any one of claims 1 to 6.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the wind turbine load control method according to any one of claims 1-6 when executing the computer program.

Description

Wind turbine generator load control method, device, computer readable medium and equipment Technical Field The application relates to the technical field of wind power generation, in particular to a wind turbine generator load control method, a wind turbine generator load control device, a computer readable medium and a terminal device. Background Along with the continuous increase of the number of the installed wind generating sets and the single-machine capacity, the method has higher requirements on the adaptability and the reliability of the wind generating sets. At present, GL and IEC specifications are taken as main flow design specifications of load design of a wind turbine generator set, and are all explicitly required to consider extremely coherent gust ECD wind conditions with direction change in the design, when the wind turbine generator set bears gusts of extremely continuous gusts with extremely high wind superposition direction change, wind speed and wind direction change drastically, the working conditions cause rapid change of loads of wind turbine generator set components and have great influence on service lives of the wind turbine components, so that control strategy adjustment is required for operation of the wind turbine generator set, and the load of the wind turbine generator set is reduced as much as possible under the condition of extremely wind conditions. Content of the application The embodiment of the application aims to provide a wind turbine generator load control method, a wind turbine generator load control device, a computer readable medium and computer readable equipment, so as to solve the problem that the load of a wind turbine generator is difficult to reduce under extreme wind conditions in the prior art. In order to achieve the above object, a first aspect of the present application provides a load control method for a wind turbine, including: acquiring the ambient wind speed and the wind direction at the current moment in real time; under the condition that the wind speed and the wind direction meet the preset wind conditions, respectively matching the wind speed and the wind direction with a preset wind speed threshold value and a preset wind direction threshold value; And if the wind speed is greater than the wind speed threshold value and the wind direction is greater than the wind direction threshold value, controlling the output torque of the wind turbine generator to be a target torque, wherein the target torque is lower than the preset output torque of the wind turbine generator. Optionally, after controlling the output torque of the wind turbine generator to be the target torque, the method further includes: and continuously acquiring the ambient wind speed and the wind direction until the acquired wind speed is not greater than the wind speed threshold value and/or the acquired wind direction is not greater than the wind direction threshold value, and controlling the output torque of the wind turbine generator to be the preset output torque. Optionally, the wind speed threshold value comprises a first wind speed threshold value and a second wind speed threshold value, the first wind speed threshold value is smaller than the second wind speed threshold value, the wind direction threshold value comprises a first wind direction threshold value and a second wind direction threshold value, the first wind direction threshold value is smaller than the second wind direction threshold value, and if the wind speed is larger than the wind speed threshold value and the wind direction is larger than the wind direction threshold value, the controlling the output torque of the wind turbine generator to be the target torque comprises: If the wind speed is greater than the first wind speed threshold value and is smaller than the second wind speed threshold value, and the wind direction is greater than the first wind direction threshold value and is smaller than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a first target torque; If the wind speed is greater than the second wind speed threshold value and the wind direction is greater than the second wind direction threshold value, controlling the output torque of the wind turbine generator to be a second target torque; the first target torque is greater than the second target torque, and the first target torque is less than the preset output torque. Optionally, the step of determining whether the wind speed and the wind direction meet a preset wind condition comprises: acquiring the historical wind speeds and the historical wind directions of n continuous historical moments before the current moment; determining a wind speed difference between the wind speed and each of the historical wind speeds, and determining a wind direction difference between the wind direction and each of the historical wind directions; If a wind speed difference larger than a preset wind