A method for monitoring the opening and closing time of a circuit breaker in real time on line by using a proximity switch

Abstract

A method for monitoring the on-off time of a circuit breaker in real time on line by using proximity switches, comprising the following steps: step S1, installing a support on each phase of the circuit breaker base, and installing two proximity switches on each support; the corresponding two proximity switches on each phase are respectively opposite to the connecting nut between the insulation pull rod and the moving pull rod of the circuit breaker in the on and off states; step S2, performing the on-off operation of the circuit breaker before and after normal operation, and recording the on-off operation by using a recording device; step S3, obtaining the on-off time of each operation of the circuit breaker by adding the time difference of the position signals collected by the proximity switches and the breaking point when the circuit breaker is off to position and on to position before operation, and the time difference of the position signals collected by the proximity switches when the circuit breaker is off to position and on to position after receiving the on-off command of the circuit breaker during normal operation. The present application can monitor the running state of the circuit breaker in real time when the circuit breaker is normally working, and improve the operation efficiency of the power transmission network.

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