Control system and method for grounding knife switch of lines of switchgear

Abstract

The invention discloses a control system and method for a grounding knife switch of lines of a switchgear. Electrification states of an electroscope is detected via a computer key; when it is detected that the electroscope is not electrified, a locking device is unlocked, and the grounding knife switch is controlled to be closed; and when it is detected that the electroscope is electrified, the locking device is forced to be locked. According to the technical scheme, whether the electroscope is electrified is detected at first, whether unlocking is carried out is determined according to the electrification state, unlocking is only allowed when it is confirmed that the electroscope is not electrified, and otherwise, corresponding equipment is locked forcedly, thereby avoiding personal maloperation in the switching operation, technically ensuring anti-maloperation performance of the intermediate-voltage switchgear in a transformer station, and further ensuring the safety of operation staff, electric network system and equipment. At the same time, the control system is simple in structure and convenient to operate, and improves the working efficiency of the operation staff.

Description

technical field [0001] The invention relates to the field of grounding knife switch control, in particular to a control system and method for a circuit grounding knife switch of a switch cabinet. Background technique [0002] In the power system, various accidents often occur, among which "live and grounding knife switch or grounding wire" is particularly serious, which will cause power grid accidents and personal accidents. [0003] At present, the switch station mainly uses mechanical locks to artificially control the grounding operation mechanism. The traditional mechanical anti-misoperation locking mainly relies on the installation of mechanical locks on the stroke position of electrical equipment, and completes the locks through mechanical transmission devices. The function is relatively single, and the switch failure rate is high. [0004] The traditional electromagnetic anti-mislocking is a kind of on-site electrical interlocking technology. It is mainly connected thr...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a switch cabinet line grounding knife switch control system and method to solve the problem of lack of simple structure, safe and reliable electric inspection anti-misoperation locking operation in the prior art. The specific scheme is as follows:

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