Safety operation control system of wind driven generator

Abstract

The invention discloses a safety operation control system of a wind driven generator. The safety operation control system comprises a main control system, a sliding ring and a variable pitch system, wherein a main control safety chain is connected with the main control system and is used for monitoring external electric components and running states which can threaten the normal running of the wine driven generator and sending a state signal to the main control system when the abnormality of any one of the electric components and the running states is monitored; the main control system is used for controlling the variable pitch system to perform emergent feathering and safe shutdown; the variable pitch system is provided with a safety chain; a state output end of the variable pitch safety chain is connected with a signal input end of the variable pitch system; the variable pitch safety chain is used for monitoring running states, which can threaten the normal running of the wind driven generator, in the variable pitch system; the variable pitch system actively controls blades to perform emergent feathering when the abnormality of any one of the running states is monitored, and feeding back state information of the variable pitch safety chain to the main control system through the sliding ring; and the main control system controls other subsystems to emergently stop. The safety operation control system is high in safety and reliability.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a control system for the safe operation of the wind power generator. Background technique [0002] A wind turbine is a device that converts clean and renewable wind energy into electric kinetic energy. It consists of multiple parts, and the control system runs through each part, which is equivalent to the nervous system of a wind turbine. Therefore, the quality of the control system is directly related to the working status, power generation and equipment safety of the wind turbine. [0003] At present, the control system of wind turbines is mainly composed of the main control system, slip ring and pitch system, etc. The instructions of power-on, standby, start, power generation and shutdown of wind turbines are all executed by the core main control system. The slip ring is sent to the pitch system, and the pitch system controls its internal shaft control cabinet, servo drive and motor ...

AI Technical Summary

Problems solved by technology

However, due to the harsh environment of wind farms, slip rings often fail due to iron filings, dirt, water droplets, lightning strikes, vibrations, etc., resulting in problems such as short circuits and open circuits in the control signals transmitted by them, and cannot transmit correct control to the pitch control system. command, the pitch control system will not be able to feather and remove wind energy in time, which directly threatens the safety of wind turbines and easily leads to serious accidents

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