Title:
OPERATION CONTROL METHOD AND SYSTEM FOR WIND TURBINE UNDER EXTREME WIND CONDITIONS
Document Type and Number:
WIPO Patent Application WO/2022/198909
Kind Code:
A1
Abstract:
An operation control method for a wind turbine under extreme wind conditions. Speed, which is the most reliable measurement signal of a wind turbine, is used to determine, on the basis of the rotational speed control effect and trend thereof at the current moment, whether the turbine has encountered extreme wind conditions of changes in wind speed and direction, so as to enter a low load mode to protect thereby the turbine. By detecting the difference in the rotational speed of the wind turbine at previous and subsequent moments and the differential product thereof, it is determined within a short time period whether the wind turbine has encountered extreme wind conditions. If a preset threshold is exceeded, the turbine enters a power-limiting state. Said method can prevent a turbine from experiencing extreme loads to the greatest extent and improve the operation safety of the turbine under extreme wind conditions. The turbine power operation mode is controlled by the turbine operation state, thereby improving the operation safety of a wind turbine under extreme wind conditions.
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Inventors:
JIN QIANG (CN)
CAI ANMIN (CN)
LIN WEIRONG (CN)
CAI ANMIN (CN)
LIN WEIRONG (CN)
Application Number:
PCT/CN2021/113617
Publication Date:
September 29, 2022
Filing Date:
August 19, 2021
Export Citation:
Assignee:
HUANENG CLEAN ENERGY RES INST (CN)
International Classes:
F03D7/04
Foreign References:
| CN112796943A | 2021-05-14 | |||
| CN109441721A | 2019-03-08 | |||
| CN109958576A | 2019-07-02 | |||
| CN108533451A | 2018-09-14 | |||
| JP2017053304A | 2017-03-16 | |||
| JP2012002074A | 2012-01-05 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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