Method and system for measuring wind speed of wind power generator

Abstract

Provided are a wind speed measurement method and system for a wind power generator. The method for measuring the wind speed of the wind power generator includes: obtaining the azimuth angle of the wind power generator blade; based on the obtained azimuth angle and a predetermined azimuth angle threshold, determining whether at least one anemometer is blocked by the wind power generator blade; During the period of time, at a predetermined sampling interval, obtain the wind speed value of the unshaded anemometer in the at least one anemometer, and interrupt the acquisition of the wind speed value of the shielded anemometer in the at least one anemometer; based on The obtained wind speed value is used to calculate the average wind speed value within the predetermined time period. The wind speed measurement method and system of the wind power generator can switch or intermittently obtain the wind speed value of the anemometer of the wind power generator according to the azimuth angle position of the blade of the wind power generator, reduce the influence of the blade on the wind speed measurement value, and improve Wind speed measurement accuracy.

Description

technical field [0001] The following description relates to the field of wind power, specifically, a method and system for measuring wind speed of a wind power generator. Background technique [0002] Energy is the main material basis of social economy and human life, and the driving force of social development. However, the reserves of non-renewable energy such as petroleum, coal, and natural gas, which are the main pillars of energy in the world, are decreasing day by day. All countries in the world are developing wind power generation. As a new energy source, wind power generation has formed a mature scale. [0003] With the gradual expansion of the scale of the wind turbine and the improvement of the safety protection of the turbine, the power generation performance of the operation of the wind turbine, that is, improving the power generation and availability of the wind turbine, has received more and more attention. How to make full use of wind energy and obtain maximu...

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Problems solved by technology

[0008] In order to solve the above-mentioned problem that the wind speed value measured by the anemometer is inaccurate due to the shielding of the anemometer by the blades, thereby affecting the wind energy utilization rate and power generation of the wind power generator, according to one aspect of the concept of the present invention, the present invention provides a wind power A method for measuring wind speed of a generator, wherein the method for measuring wind speed of a wind power generator includes: obtaining the azimuth angle of a blade of a wind power generator; based on the obtained azimuth angle and a predetermined azimuth angle threshold, determining whether at least one anemometer The blades of the wind turbine are blocked; within a predetermined period of time, at a predetermined sampling interval, the wind speed value of the unblocked anemometer in the at least one anemometer is obtained, and the acquisition of the anemometer in the at least one anemometer is interrupted The wind speed value of the blocked anemometer; based on the obtained wind speed value, calculate the average wind speed value in the predetermined time period

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