Double-set intelligent terminal starting control loop of transformer substation circuit breaker

Abstract

The invention discloses a double-set intelligent terminal starting control loop of a transformer substation circuit breaker. The double-set intelligent terminal starting control loop comprises a first set of intelligent terminal starting control loop and a second set of intelligent terminal starting control loop; the first set of intelligent terminal starting control loop comprises a five-prevention lock, a remote control / on-site handle module, a remote control pressing plate, a first manual closing / manual opening starting relay module, a first switching-in module and a first execution module which are sequentially arranged from a direct current positive electrode; nodes 1 and 2 of the remote control / on-site handle module are connected with an on-site hand-closing / hand-separating handle module, and nodes 3 and 4 are connected with a measurement and control module; and the second set of intelligent terminal starting control loop comprises a second manual closing / manual opening starting relay module, a second switching-in module and a second execution module which are sequentially arranged from the direct current positive electrode, and further comprises a second three-phase closing outlet pressing plate module and a manual closing starting relay starting node which are connected with the first switching-in module. The problem that one of two sets of intelligent terminals of a transformer substation circuit breaker cannot receive remote control opening and closing input can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of electric power system substations, in particular to a start-up control circuit of a double-set intelligent terminal of a circuit breaker in a substation. Background technique [0002] A substation is a place in a power system that transforms voltage and current, receives electric energy and distributes electric energy. The substation in the power plant is a step-up substation, whose function is to boost the electric energy generated by the generator and feed it to the high-voltage grid. Each substation is equipped with a multi-circuit breaker. The circuit breaker refers to a circuit breaker that can close, carry and break the current under normal circuit conditions and can close, carry and break abnormal circuit conditions within a specified time. The current switching device can effectively prevent accidents from expanding and ensure safe operation. [0003] At present, the protection devices and intel...

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Problems solved by technology

[0005] In view of the above problems, the present invention proposes a double-set intelligent terminal start-up control loop for circuit breakers in substations that solves at least some of the above technical problems, which can effectively solve the problem of two sets of circuit breakers in substations. The problem that one of the sets of smart terminals cannot receive the input of the remote switch and switch

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