Method and system for active power control of wind turbines

Abstract

The embodiment of the invention discloses a method and system for active power control of wind turbines. The method comprises the steps of classifying the wind turbines according to the capability of the wind turbines participating in wind power plant automatic gain control (AGG) boost / reduction power control, and dividing the wind turbines into boost power wind turbines, reduction power wind turbines and power-nonadjustable wind turbines; setting a boost power priority sequence of the boost power wind turbines according to boost power stability, and setting a boost power priority sequence and distribution strategy; setting a reduction power priority sequence of the reduction power wind turbines according to reduction power stability, and setting a reduction power priority sequence and distribution strategy; and controlling the wind turbines to execute boost power or reduction power operation according to the wind power plant AGG boost / reduction power control requirements. According to the wind turbine active power control scheme, factors affecting the service lives of the wind turbines can be fully considered, grouping is performed according to the characteristics of the factors, and corresponding control sequences and strategies are selected to perform active power regulation on the wind turbines, and thus the aging of the wind turbines is slowed down.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and system for controlling the active power of a wind turbine. Background technique [0002] With the increase of wind power installed capacity, especially the large-scale centralized access of wind power, the relationship between wind power system and power system is getting closer. This also increases the technical difficulty of the wind farm operation department in terms of predictability and controllability of wind power. Among them, how to reasonably control the active power output control of wind turbines is a technical problem often encountered in the wind power field. [0003] In the related art, the output control of the active power of the wind turbine is generally realized through an AGC (Automatic Generation Control, automatic generation control) control system of the wind farm. Among them, the output control of the active power of wind turbine...

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Problems solved by technology

[0005] In the embodiment of the present invention, a wind turbine active power control scheme is provided to solve the problem that the wind turbine active power control scheme in the prior art does not take into account the factors that affect the operation life of the wind turbine, resulting in the wind turbine being easily aging and shortening the service life. technical problem

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