Substation circuit breaker control loop and monitoring method thereof

Abstract

The invention discloses a substation circuit breaker control loop and a monitoring method thereof. The substation circuit breaker control loop comprises a tripping control loop and / or a closing control loop connected between an operating power source anode and an operating power source cathode; and the tripping control loop and / or the closing control loop are / is connected in parallel between the operating power source anode and the operating power source cathode; OPT1, OPT2, OPT3 and OPT4 optical coupling loops on the control loop sense the action correctness of the detection contact of a relay; and the HWJ optical coupling loop and TWJ optical coupling loop on the control loop sense the electrical integrity of the control loop of the relay. The whole control loop can act correctly as required, and the state maintenance of the whole control loop is realized.

Description

technical field [0001] The invention relates to a control circuit of a substation circuit breaker and a monitoring method thereof, and belongs to the technical field of substation operation and maintenance. Background technique [0002] Whether the connection of various control circuits in the substation is normal or not directly affects whether the electrical equipment in the substation can work safely and reliably, and is an important link for the safe and stable operation of the substation. Under normal circumstances, the operation and maintenance personnel will inspect or overhaul (maintenance, debug, test) various control circuits in combination with the maintenance period stipulated by the electrical equipment of the power system and the one-time equipment outage plan. The cycle is fixed for one year or A few years, which is commonly referred to as regular maintenance. [0003] With the continuous development of the power grid, the scale of substations is increasing d...

AI Technical Summary

Problems solved by technology

[0005] At present, limited by the lack of online real-time monitoring mode of the circuit breaker and its tripping and closing control loop, the maintenance of circuit breakers mainly relies on the regular maintenance mode, which also brings a huge workload to the on-site operation and maintenance personnel. How to realize On-line non-blind zone monitoring of circuit breaker tripping and closing control circuits is of great significance for the real realization of condition-based maintenance of circuit breakers

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