METHOD AND SYSTEM FOR IDENTIFYING VARIABLE PITCH OUT-OF-SYNCHRONIZATION FAILURE OF WIND TURBINE GENERATOR SYSTEM ON BASIS OF IMAGE PROCESSING

WIPO Patent Application WO/2022/174566

A1

Disclosed are a method and system for identifying a variable pitch out-of-synchronization failure of a wind turbine generator system on the basis of image processing, the method comprising the following steps: 1) acquiring a blade profile image; 2) extracting blade edge information of a horizontal line position in the blade profile image, and calculating the distance between edges of two adjacent blades in the same horizontal line according to the blade edge information; 3) calculating a deviation rate between every two adjacent blades according to the distance between the edges of the two adjacent blades in the same horizontal line; and 4) and determining whether the deviation rate between every two adjacent blades is greater than or equal to a preset threshold, and if the deviation rate between any two adjacent blades is greater than or equal to the preset threshold, same indicating that a variable pitch out-of-synchronization failure occurs in a wind turbine generator system.

CAI ANMIN (CN)
LYU JIANBO (CN)
WANG WENFENG (CN)
ZHAO DENGFENG (CN)
LIU PENGCHENG (CN)
LIN XUEFENG (CN)
JIAO CHONG (CN)

PCT/CN2021/114652

August 25, 2022

August 26, 2021

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HUANENG CLEAN ENERGY RES INST (CN)
HUANENG NEW ENERGY SHANDONG CO LTD (CN)

F03D7/00; F03D17/00

CN112879219A	2021-06-01
CN111102940A	2020-05-05
CN107587983A	2018-01-16
CN102435394A	2012-05-02
CN109154274A	2019-01-04
CN110857685A	2020-03-03
CN105134510A	2015-12-09
EP2481924A1	2012-08-01

SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)

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