Method and system for monitoring and monitoring a knife switch control loop

Abstract

The invention discloses a method and system for monitoring and detecting a knife switch control circuit. The method includes: detecting and judging whether the knife switch control circuit is powered off; State monitoring, judging whether the opening and closing circuit is connected, meeting the conditions for opening and closing operation, and outputting a status indication; Whether each segment of the closing control circuit should be connected is in the connected state, and the segment that should not be connected is in the non-connected state, and the status indication is output. By adopting this method, the opening and closing circuit status of the knife switch control circuit can be monitored, and the circuit fault can be found before the knife switch is operated, so that the knife switch also has the circuit disconnection monitoring function of the same level as the switch, and when there is a problem It can realize the fault detection of the knife switch control circuit and quickly locate the faulty section of the circuit, thereby reducing operation delays.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a monitoring system and a monitoring method for a knife switch control circuit. Background technique [0002] Knife switch failure is the most frequently encountered and most common failure in switching operations, and the operation delay caused by knife switch failure accounts for the largest part of the operation delay. Knife switch faults are divided into mechanical faults and circuit faults, and circuit faults account for about half of them. Different from the switch which has a complete control circuit disconnection monitoring circuit, all the current knife switches do not have a monitoring circuit, which leads to the failure of the control circuit to be found under the operating condition of the knife switch. It can only be found at the moment of operation, resulting in operation delays. . Contents of the invention [0003] The purpose of the present invention i...

AI Technical Summary

Problems solved by technology

Different from the switch which has a complete control circuit disconnection monitoring circuit, all current knife switches do not have a monitoring circuit. As a result, the control circuit cannot be found to have problems under the operating condition of the knife switch. It can only be found at the moment of operation, resulting in operation delays.

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