CN-117287345-B - Wind turbine generator set optimal control method and system based on cabin vibration acceleration

CN117287345BCN 117287345 BCN117287345 BCN 117287345BCN-117287345-B

Abstract

The invention relates to the field of wind turbine generator control, and particularly discloses a wind turbine generator optimal control method and system based on cabin vibration acceleration, wherein first historical operation data and second historical operation data of a wind turbine generator are obtained, a shutdown vibration acceleration threshold value and a shutdown accumulation time are set, an alarm vibration acceleration threshold value, an alarm accumulation time and a load reduction wind speed threshold value are set, whether the real-time vibration acceleration of the wind turbine generator exceeds the shutdown vibration acceleration threshold value and the duration exceeds the shutdown accumulation time is judged, if yes, the wind turbine generator executes a shutdown action, if not, whether the real-time vibration acceleration of the wind turbine generator exceeds the alarm vibration acceleration threshold value and the duration exceeds the alarm accumulation time and simultaneously, if the real-time wind speed exceeds the load reduction wind speed threshold value, the wind turbine generator executes the load reduction action and simultaneously gives an alarm prompt, and if not, the wind turbine generator normally operates. The invention can reduce unnecessary shutdown of the unit and improve reliability.

Inventors

LIU CUICUI
LIU XIAOLONG
LIU NANNAN

Assignees

中车山东风电有限公司

Dates

Publication Date: 20260505
Application Date: 20230922

Claims (4)

1. The wind turbine generator set optimal control method based on the cabin vibration acceleration is characterized by comprising the following steps of: Acquiring first historical operation data and second historical operation data of the wind turbine, wherein the first historical operation data comprise a plurality of vibration acceleration values under the abnormal operation condition of the wind turbine, and the second historical operation data comprise a plurality of vibration acceleration values under the normal operation condition of the wind turbine; Setting a shutdown vibration acceleration threshold according to the first historical operation data, and configuring shutdown accumulated time; Setting an alarm vibration acceleration threshold according to the second historical operation data, and configuring alarm accumulation time and a load reduction wind speed threshold; Detecting the real-time wind speed of the running environment of the wind turbine and the real-time vibration acceleration of the wind turbine; Judging whether the real-time vibration acceleration of the wind turbine exceeds a shutdown vibration acceleration threshold value or not and whether the duration exceeds the shutdown accumulated time; If yes, the wind turbine generator performs a shutdown action; Otherwise, judging whether the real-time vibration acceleration of the wind turbine generator exceeds an alarm vibration acceleration threshold value and the duration exceeds an alarm accumulation time, and judging whether the real-time wind speed exceeds a load-shedding wind speed threshold value; If yes, the wind turbine performs load shedding action, and the wind turbine sends out an alarm prompt; Otherwise, the wind turbine generator runs normally; setting a shutdown vibration acceleration threshold according to the first historical operation data, specifically comprising: A plurality of vibration acceleration values in the first historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation ; Setting the shutdown vibration acceleration threshold value as +3 ; Setting an alarm vibration acceleration threshold according to the second historical operation data, specifically comprising: a plurality of vibration acceleration values in the second historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation ; Setting the alarm vibration acceleration threshold value as +3 。
2. The optimal control method for a wind turbine based on cabin vibration acceleration according to claim 1, wherein the wind turbine performs a load shedding operation, specifically comprising: and (3) down-regulating the power set value and the generator rotating speed set value according to the current power value and the generator rotating speed value of the wind turbine generator.
3. A wind turbine generator optimizing control system based on cabin vibration acceleration is characterized by comprising, The historical operation data acquisition module is used for acquiring first historical operation data and second historical operation data of the wind turbine, wherein the first historical operation data comprise a plurality of vibration acceleration values under the abnormal operation condition of the wind turbine, and the second historical operation data comprise a plurality of vibration acceleration values under the normal operation condition of the wind turbine; the shutdown acceleration configuration module is used for setting a shutdown vibration acceleration threshold according to the first historical operation data and configuring shutdown accumulated time; The alarm acceleration configuration module is used for setting an alarm vibration acceleration threshold according to the second historical operation data and configuring alarm accumulation time and a load reduction wind speed threshold; the real-time operation parameter detection module is used for detecting the real-time wind speed of the wind turbine running environment and the real-time vibration acceleration of the wind turbine; The operation control module is used for judging whether the real-time vibration acceleration of the wind turbine exceeds a shutdown vibration acceleration threshold value and the duration exceeds a shutdown accumulated time, if so, executing a shutdown action by the wind turbine, otherwise, judging whether the real-time vibration acceleration of the wind turbine exceeds an alarm vibration acceleration threshold value and the duration exceeds an alarm accumulated time, and simultaneously judging whether the real-time wind speed exceeds a load reduction wind speed threshold value; setting a shutdown vibration acceleration threshold according to the first historical operation data, specifically comprising: A plurality of vibration acceleration values in the first historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation ; Setting the shutdown vibration acceleration threshold value as +3 ; Setting an alarm vibration acceleration threshold according to the second historical operation data, specifically comprising: a plurality of vibration acceleration values in the second historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation ; Setting the alarm vibration acceleration threshold value as +3 。
4. A wind turbine optimizing control system based on nacelle vibration acceleration as claimed in claim 3, wherein the wind turbine performs a load shedding action, in particular comprising: and (3) down-regulating the power set value and the generator rotating speed set value according to the current power value and the generator rotating speed value of the wind turbine generator.

Description

Wind turbine generator set optimal control method and system based on cabin vibration acceleration Technical Field The invention relates to the field of wind turbine generator control, in particular to a wind turbine generator optimal control method and system based on cabin vibration acceleration. Background In the running process of the wind generating set, the blades can convert wind energy into mechanical energy, corresponding vibration can occur in the engine room in the process, corresponding vibration acceleration is further generated, and the change of the vibration acceleration visually reflects the running condition of the set. In general, the vibration acceleration of the nacelle is required to be smaller than a set threshold value in the running process of the wind generating set, and when the vibration acceleration of the nacelle exceeds the set threshold value, the wind generating set can perform corresponding shutdown protection action. However, the current control mode is simpler, the threshold value of the cabin vibration acceleration is generally set according to experience, if the threshold value of the vibration acceleration is smaller, frequent shutdown of the wind turbine can occur, if the threshold value of the vibration acceleration is larger, no shutdown of the wind turbine can occur when the wind turbine runs in a severe environment, the running reliability of the wind turbine is reduced, and the wind turbine runs in an environment with larger amplitude for a long time, so that the service life of the fan is greatly shortened, and the availability of the wind turbine is affected. Disclosure of Invention In order to solve the problems, the invention provides a wind turbine generator optimizing control method, a system, a terminal and a storage medium based on cabin vibration acceleration, which realize the fault early warning function of the wind turbine generator, further reduce unnecessary shutdown of the wind turbine generator, reduce the generating capacity loss, improve the running reliability of the wind turbine generator, and simultaneously execute shutdown action of the wind turbine generator after the vibration acceleration exceeds a shutdown vibration acceleration threshold value and lasts for a certain time, so that the wind turbine generator is prevented from running in a severe environment for a long time, and the service life of the wind turbine generator is prolonged. In a first aspect, the present invention provides a wind turbine generator optimizing control method based on nacelle vibration acceleration, including the following steps: Acquiring first historical operation data and second historical operation data of the wind turbine, wherein the first historical operation data comprise a plurality of vibration acceleration values under the abnormal operation condition of the wind turbine, and the second historical operation data comprise a plurality of vibration acceleration values under the normal operation condition of the wind turbine; Setting a shutdown vibration acceleration threshold according to the first historical operation data, and configuring shutdown accumulated time; Setting an alarm vibration acceleration threshold according to the second historical operation data, and configuring alarm accumulation time and a load reduction wind speed threshold; Detecting the real-time wind speed of the running environment of the wind turbine and the real-time vibration acceleration of the wind turbine; Judging whether the real-time vibration acceleration of the wind turbine exceeds a shutdown vibration acceleration threshold value or not and whether the duration exceeds the shutdown accumulated time; If yes, the wind turbine generator performs a shutdown action; Otherwise, judging whether the real-time vibration acceleration of the wind turbine generator exceeds an alarm vibration acceleration threshold value and the duration exceeds an alarm accumulation time, and judging whether the real-time wind speed exceeds a load-shedding wind speed threshold value; If yes, the wind turbine performs load shedding action, and the wind turbine sends out an alarm prompt; Otherwise, the wind turbine generator runs normally. In an alternative embodiment, the shutdown vibration acceleration threshold is set according to the first historical operation data, and specifically includes: A plurality of vibration acceleration values in the first historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation; Setting the shutdown vibration acceleration threshold value as+3。 In an alternative embodiment, the alarm vibration acceleration threshold is set according to the second historical operation data, and specifically includes: a plurality of vibration acceleration values in the second historical operating data obey normal distribution; calculating the mean value of the normal distribution And standard deviation; Setting t