A Control System to Guarantee the Safety of Wind Turbines

Abstract

The invention discloses a control system guaranteeing the safety of a wind electrical turbine assembly. The control system guaranteeing the safety of a wind electrical turbine assembly comprises a control unit, a variable pitch unit, a fan braking unit and a yaw control unit; the control unit presets a safe rotation speed value, when a variable pitch system is in trouble and the rotation speed value measured by the control unit is smaller than the safe rotation speed value, the control unit transits an instruction to the fan braking unit, a wind turbine performs a braking action; the rotationspeed value measured by the control unit is larger than the safe rotation speed value, the control unit transits an instruction to the yaw control unit, and the wind turbine performs a yaw action; when the wind turbine yaws and the rotation speed value measured by the control unit is smaller than the safe rotation speed value, the control unit transits an instruction to the fan braking unit, and the wind turbine performs another braking action. The control system guaranteeing the safety of the wind electrical turbine assembly solves the problem that in traditional technology the wind electrical turbine assembly is damaged because of the galloping of the wind electrical turbine assembly under the condition that fan blades are broken and cannot feathering.

Description

technical field [0001] The invention relates to a control system for ensuring the safety of a wind turbine, and belongs to the technical field of wind turbine equipment. Background technique [0002] The current high-power wind turbines are all running in an unattended state during operation. The local control system of the wind turbine automatically controls various operating conditions, and automatically adjusts the power generation and wind rotor speed according to the wind speed. For the wind, automatic control of grid connection and off-grid, etc., and remote monitoring of wind turbines, remote monitoring and collection of various data of wind turbines, and manual operation of wind turbines; [0003] Wind turbines have complete protection functions. If there is a fault, it will automatically alarm and stop. Usually, the protection functions of wind turbines include overspeed, generator overload and failure, excessive vibration, power grid or load loss, shutdown failure ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a control system to ensure the safety of wind turbines in view of the above deficiencies, so as to solve the problem of damage to wind turbines caused by speeding of wind turbines when the fan blades in the traditional technology fail to feather. question;

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