Pre-protecting system for slipping of wind driven generator coupler and detection control method

Abstract

The invention discloses a pre-protecting system of slipping of a wind driven generator coupler and a detection control method. A wind driven generator comprises a gearbox output shaft, the coupler, a generator spindle and a fan master control system. The coupler is connected with the gearbox output shaft and the generator spindle. The wind driven generator further comprises a temperature sensor and a controller, wherein the temperature sensor is used for monitoring the current temperature of the coupler to obtain the current temperature and transmitting the obtained current temperature to the controller; the controller determines whether the coupler is slipped or not according to the current temperature transmitted by the temperature sensor and transmits a control signal to the fan master control system according to determined slipping results; the fan master control system receives the control signal transmitted by the controller and controls the wind driven generator to be closed down or started up. According to the detection control method, the monitored current temperature of the temperature sensor is compared with a preset temperature value and a critical temperature value, and the temperature rising slope of the two times before and after is compared with the temperature rising slope of the coupler, so that whether the couple is slipped or not is judged and stopping and starting of the wind driven generator are controlled.

Description

technical field [0001] The invention belongs to the field of optimization of key equipment of transmission chains of large-scale wind power generators, and relates to a pre-protection system and a detection and control method for slipping of a coupling of a wind power generator. Background technique [0002] In large-scale wind turbines such as double-fed, high-speed permanent magnet and semi-direct drive, the coupling connects the high-speed end of the gearbox and the generator end, and is one of the important and indispensable components for torque transmission and protection of the gearbox and generator. First, it can effectively limit the instantaneous impact moment in the transmission chain, and ensure the safe operation and service life of the gearbox and generator. However, in the actual operation of wind farms, the failure of coupling slippage occurs frequently. At present, there is a general lack of effective detection and control methods and protection systems for ...

AI Technical Summary

Problems solved by technology

However, in the actual operation of wind farms, the failure of coupling slippage occurs frequently. At present, there is a general lack of effective detection and control methods and protection systems for coupling slippage at home and abroad, and the treatment method is limited to replacing new couplings. It is cumbersome and labor-intensive to replace, and secondly, it will cause huge loss of power generation and increase in the cost of spare parts to the enterprise.

Images