LIGHT AND SHADOW FLICKER CONTROL METHOD FOR WIND TURBINE GENERATOR SYSTEM

Title:

LIGHT AND SHADOW FLICKER CONTROL METHOD FOR WIND TURBINE GENERATOR SYSTEM

Document Type and Number:

WIPO Patent Application WO/2021/120885

Kind Code:

A1

Abstract:

A light and shadow flicker control method for a wind turbine generator system. The method comprises the following steps: step one: acquiring the current moment of a wind farm; step two: calculating a prohibited yaw area which is affected by light and shadow at the current moment; step three: acquiring the current yaw angle of a fan, and calculating a permitted yaw area according to the yaw angle; and step four: according to the ownership relationship between the current yaw angle, the permitted yaw area and the prohibited yaw area, determining and selecting a measure used for preventing the effect of light and shadow. The effect of an actual spatial intersection of a projection area and a sensitive area of a wind wheel face is taken into consideration, and a rational control strategy is selected by means of calculating a prohibited yaw area that generates a light-and-shadow effect at a moment t and by means of determining the ownership relationship between the current yaw angle, a permitted yaw area and the prohibited yaw area, thereby fitting the actual operating situation of a wind turbine generator system.

Inventors:

PENG LANGJUN (CN)
HUANG LINGXIANG (CN)
ZENG BING (CN)
TAN ZHENG (CN)
ZHANG SHUOWANG (CN)

Application Number:

PCT/CN2020/125135

Publication Date:

June 24, 2021

Filing Date:

October 30, 2020

Export Citation:

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Assignee:

XEMC WINDPOWER CO LTD (CN)

International Classes:

F03D80/20

Foreign References:

CN110778466A	2020-02-11
US20190271296A1	2019-09-05
US20190271296A1	2019-09-05
CN105673359A	2016-06-15
CN101796294A	2010-08-04
CN105069274A	2015-11-18
JP2004360508A	2004-12-24

Other References: