Emergency yaw control device and method for wind generating set

Abstract

The invention provides an emergency yaw control device and method for a wind generating set, and relates to the technical field of emergency control of wind driven generators. The control device comprises a power supply module, a safety relay, an industrial personal computer and a plurality of yaw modules for realizing emergency yaw of the wind generating set. The safety relay is respectively connected with the power supply module and a first terminal of the industrial personal computer. The first terminal is respectively connected with the plurality of yaw modules. The emergency yaw control device further comprises an emergency power supply relay, a control module and a standby power supply module. The emergency power supply relay is respectively connected with the first terminal of the industrial personal computer, the standby power supply module and the control module. The control module is used for sending a closing signal or a disconnecting signal to the emergency power supply relay after a safety chain is disconnected or reset. The emergency power supply relay is used for closing or opening a circuit between the standby power supply module and the first terminal according to the closing signal or the opening signal. According to the emergency yaw control device and method for the wind generating set, the yaw crosswind function can be achieved under the condition that the safety chain is disconnected, and the safety of fan control is ensured.

Description

technical field [0001] The invention relates to the technical field of emergency control of wind power generators, in particular to an emergency yaw control device and control method for wind power generators. Background technique [0002] The safety chain circuit of the wind turbine is composed of safety relay modules. When the safety chain is disconnected, the 24V control power supply of the DO point controlled by the safety chain of the unit will be cut off. At this time, such as hydraulic pump pressure and unit yaw control cannot be performed. Wait for the DO output action. At present, when the safety chain is disconnected, the safety chain is usually reset by manual or automatic control. However, in the event of emergency situations such as unit stalling and unfeathered blades, the safety chain cannot be reset due to factors such as excessive speed and vibration, and the unit cannot be manually or automatically controlled to perform yaw and crosswind actions, which wil...

AI Technical Summary

Problems solved by technology

However, in the event of emergency situations such as unit stalling and unfeathered blades, the safety chain cannot be reset due to factors such as excessive speed and vibration, and the unit cannot be manually or automatically controlled to perform yaw and crosswind actions, which will cause blades to Serious consequences such as fracture and damage to the unit will cause huge economic losses and endanger personal safety

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