Anti-misoperation locking system and method for power plant

Abstract

The invention discloses an anti-misoperation locking system and method for a power plant. When a device line is overhauled or a high-pressure-side earthing switch of a boosting transformer is needed to be closed in other circumstances, a first disconnecting switch is firstly switched off, a first key is taken out from a first control lock on the first disconnecting switch and then is inserted into a first exchange lock, a second key is taken out from a second exchange lock and finally is inserted into a second control lock on the earthing switch, and the earthing switch is closed. After the operation is completed, the earthing switch is switched off again, the second key is taken out from the second control lock and put back to a key exchange box, the first key is taken out from the first exchange lock and inserted into the first control lock again, and then the first disconnecting switch can be operated. By the adoption of the anti-misoperation locking system and the method for the power plant, electrical misoperation caused by inaccurate computer monitoring signals and man-made errors are completely eradicated, device damage and personal injury and fatal accidents are avoided, and the operating safety of the power plant is ensured.

Description

technical field [0001] The invention relates to the field of power system safety, in particular to a power plant anti-misoperation locking system and method. Background technique [0002] In order to ensure the safe operation of the power plant and prevent the occurrence of electrical misoperation accidents, it is required to prohibit the live closing of the grounding switch on the high voltage side of the step-up transformer. If the grounding switch on the high-voltage side of the step-up transformer is closed by mistake, a short circuit to ground will occur, which may cause equipment damage and personal injury or death. [0003] Power plants are often equipped with microcomputer five-prevention systems to avoid safety accidents caused by electrical misoperations. During switching operations, the rehearsal operation is first simulated on the anti-mistake host computer. Position state, each simulated operation is judged by locking logic, the correct simulated operation cont...

AI Technical Summary

Problems solved by technology

However, the microcomputer five-prevention system does not have the prompt function for equipment displacement, and it completely depends on the computer monitoring signal. If the computer monitoring signal is wrong, or the operator’s monitoring is not in place, resulting in a certain displacement signal being missed, there will still be safety accidents. may happen

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