Safety chain system of wind power generating set and its fault rapid identification method

Abstract

The invention discloses a safety chain system of a wind generating set and a fault rapid identification method thereof. According to different safety chain trigger objects, a non-intelligent safety relay and a conventional relay are adopted to construct a safety chain loop by a hard-wired series mode so as to form a unit safety system; the state of the safety system is effectively monitored; for the same protected object, the safety chain loop adopts a redundancy design mode; and at least two independent safety chain protection connection points can simultaneously operate, so that the state of effectiveness loss of the safety chain, which is caused by output adhesion of a certain equipment object protection relay connection point, can be more effectively prevented. The safety chain system of the wind generating set and the fault rapid identification method thereof, which are disclosed by the invention, are simple to implement, effective to monitor and low in cost; and meanwhile, the safety and reliability of the safety chain system of the wind generating set are protected by adopting a multilevel protection mode.

Description

technical field [0001] The invention specifically relates to a safety chain system of a wind power generating set and a fault quick identification method thereof, and belongs to the technical field of safety of the wind generating set. Background technique [0002] The wind turbine control system safety chain loop is independent of the controller unit in the control system. Its function is that when there is a major failure of the unit equipment, it can be separated from the controller unit in the control system and directly act on the unit braking system, and the unit can be stopped through the unit blade tip pneumatic brake and mechanical brake. Ensure the safety of unit equipment. After the safety chain of the unit is triggered, even if the trigger fault is automatically restored, the safety chain circuit must be reset manually, otherwise the unit cannot start and run. The wind turbine safety chain loop is the final backup protection measure for the controller unit of t...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the inability to effectively disconnect the safety chain in the prior art, the main control system cannot quickly identify the cause of the first failure, cause delays in troubleshooting and unit maintenance, affect power generation efficiency and adopt a safety controller (including CPU) Expensive and complex peripheral circuits

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