A high -voltage switch cabinet ground door knife microcomputers and method and method

Abstract

The invention relates field of a substation safety tool, in particular to a microcomputer misoperation-prevention locking device and method for a grounding knife switch of a high-voltage switch cabinet. The device comprises the high-voltage switch cabinet grounding knife switch, a live-line display device and a five-prevention lock. According to the application method, a bill is made by an operator according to a dispatching command, running of a certain circuit can be changed to switch and circuit maintenance switching operation after the fitted operation bill is subjected to a positive valueand checked and signed by a shift chief-operator, and the operation can be performed before no power of the circuit is verified by the live-line display microcomputer misoperation-prevention lockingdevice of the high-voltage switch cabinet grounding knife switch and the circuit grounding knife switch is combined. The device has the beneficial effects that the misoperation-prevention locking function of the high-voltage switch cabinet grounding knife switch is improved, and the device has the advantages of the misoperation accident generation probability is greatly reduced, and running, the personal safety of a maintainer and the safety running of a power grid are effectively guaranteed.

Description

technical field [0001] The invention relates to the field of substation safety tools, in particular to a high-voltage switch cabinet grounding knife microcomputer anti-misoperation locking device and method. Background technique [0002] With the rapid development of the power system and the increasing requirements for power supply reliability, the role of switchgear in substations has become increasingly prominent. The installation of anti-misoperation locking devices in high-voltage switchgear is a fundamental measure for power production to ensure the safety of people, power grids, and equipment. The high-voltage switchgear should be equipped with a complete anti-misoperation locking device, and it has a perfect and reliable anti-misoperation locking function. If it does not have the anti-misoperation locking function, a mechanical lock should be installed. Especially before closing the ground switch or opening the cabinet door, the electric test is very important. [0...

AI Technical Summary

Problems solved by technology

However, it has been proved by practice that the failure rate of electromagnetic locks is very high. There are often problems such as jamming and unlocking buttons that cannot be returned in time, causing the coil to be charged for a long time. This is the unreliable problem. Nowadays, electromagnetic locks are basically equipped with unlocking keys. It is used in the case of electromagnetic lock failure or emergency, but the unlocking key is often not managed effectively, and there is a phenomenon of random use on site, which poses a safety hazard

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