Wind turbine generator load regulation effect coefficient testing method and device

Abstract

The embodiment of the invention discloses a wind turbine generator load regulation effect coefficient testing method and device. The method comprises the steps that an active power value and a frequency value of a wind turbine generator are obtained in real time; whether a variable quantity absolute value of the frequency value is larger than a preset threshold value or not within a certain period of time is judged; if yes, the wind turbine generator is started to regulate the frequency of a power grid, a terminal time point of the certain period of time is adopted as a primary frequency modulation initial time point of the wind turbine generator, and an initial power value and an initial frequency value of the primary frequency modulation initial time point are obtained; if not, the terminal time point of the certain period of time is adopted as a primary frequency modulation end time point of the wind turbine generator, and an end active power value and an end frequency value of the primary frequency modulation end time point are obtained; finally, a load regulation effect coefficient of the wind turbine generator is calculated. The wind turbine generator load regulation effect coefficient can be measured in an online mode, it can be ensured that the measuring result has the real-time performance, and the primary frequency modulation action process of the wind turbine generator is analyzed.

Description

technical field [0001] The present application relates to the technical field of power systems, and in particular to a method and device for testing the load regulation effect coefficient of wind turbines. Background technique [0002] In the power system, the access of large-scale wind turbines has brought great adjustment pressure to other traditional frequency modulation units in the power grid. If effective frequency control measures are not taken, the power system may collapse. This requires wind turbines It undertakes functions such as conventional primary frequency modulation. Through the frequency response characteristics of the wind turbine itself, combined with the energy storage of the wind turbine for primary frequency regulation, it can not only ensure the frequency stability after grid connection, but also ensure the safety of the regional power grid. Through the primary frequency regulation test of wind turbines, the primary frequency regulation capability of...

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Problems solved by technology

[0005] This application provides a method and device for testing the load regulation effect coefficient of wind turbines to solve the problem that in the existing test methods for load regulation effect coefficients of wind turbines, the test results obtained by offline methods do not have synchronization, which is not conducive to the analysis of wind turbines A problem with the action process of frequency modulation

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