Yaw system with automatic wind-deviation protection and its control method

Abstract

A yaw system and a yaw method with automatic wind direction deviation protection belong to the technical field of wind power generation. It includes the main controller of the wind power generating set, the limit switch, the torsion cable switch, the wind speed and direction instrument, the yaw actuator, the yaw brake, the yaw redundant controller and the signal acquisition and transmission device; the input terminals of the signal acquisition and transmission device are respectively Connect the limit switch, torsion cable switch and wind speed and direction instrument of the yaw system, the output end is connected to the main controller of the wind turbine through the yaw redundant controller, and the yaw redundant controller is also connected to the yaw actuator and the yaw controller respectively. The navigation brake and the signal acquisition and transmission device communicate the collected wind speed and direction signals, limit signals, and uncable signals through the yaw redundant controller and the main controller of the wind power generation unit in real time. The present invention can realize the protection function of automatic yaw against the wind under the extreme condition that the main controller is out of order or unable to retract the propeller, so as to prevent the falling accident of the large-scale wind generating set, protect the safety of the large-scale wind generating set and prolong the service life.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to a yaw system with automatic wind direction deviation protection and a control method thereof. Background technique [0002] In response to the global energy crisis and the greenhouse effect, the development of renewable energy has been strengthened and a large number of preferential policies have been provided. Wind power has entered a period of rapid development. The installed capacity of wind power has increased significantly, and corresponding problems have also been exposed; for example, The controller of the wind power generating set fails to control or fails to retract the propellers in time due to a fault, causing the wind generating set to fall. The existing yaw system consists of the main controller of the wind power generation unit, the yaw actuator, the yaw brake mechanism, the limit switch, the uncable switch, the wind speed and direction instrument, etc...

AI Technical Summary

Problems solved by technology

[0002] In response to the global energy crisis and the greenhouse effect, the development of renewable energy has been strengthened and a large number of preferential policies have been provided. Wind power has entered a period of rapid development. The installed capacity of wind power has increased significantly, and corresponding problems have also been exposed; for example, The controller of the wind turbine fails to control or fails to retract the propellers in time due to a fault, causing the wind turbine to fall

The existing yaw system consists of the main controller of the wind power generation unit, the yaw actuator, the yaw brake mechanism, the limit switch, the uncable switch, the wind speed and direction instrument, etc.; Judging signals such as cables and limit switches, it can automatically yaw against the wind, untie the cable and manually yaw. If the wind turbine is facing the wind direction, the speed of the wind turbine will continue to increase, exceeding the bearing capacity of the wind turbine and causing the wind turbine to fall

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