Bus-tie cell capable of realizing mutual tie of three buses and use method

Abstract

The invention relates to a bus-tie cell capable of realizing mutual tie of three buses and a use method. The bus-tie cell capable of realizing mutual tie of three buses comprises a first bus, a secondbus, a standby bus and a bus-tie cell, wherein the first bus, the second bus and the standby bus realize pairwise connection of the buses through the bus-tie cell; the bus-tie cell comprises a circuit breaker, the upper wire outlet end of the circuit breaker is connected with a first connecting wire, the first connecting wire is connected with the standby bus, and the first connecting wire is connected with a third isolating switch; the lower wire outlet end of the circuit breaker is connected with a second connecting wire, the second connecting wire is connected with the first bus, and the second connecting wire is sequentially connected with a first overhaul grounding switch and a first isolation switch from near to far away from the circuit breaker. The bus-tie cell capable of realizing mutual tie of three buses is suitable for mutual tie of three buses, circuit breaker tie between every two buses is achieved through the operation sequence of the isolation switches, and a new bus-tie cell is provided for achieving the wiring mode of the three buses (double buses plus the standby bus).

Description

technical field [0001] The invention relates to the technical field of power distribution equipment, in particular to a bus coupler interval and a use method that can realize the interconnection of three bus bars. Background technique [0002] With the improvement of social requirements for the reliability of substation operation, the requirements for the operation of substation switches are also getting higher and higher, especially for very important substations, even during equipment maintenance, abnormal conditions are not allowed. [0003] The electrical main wiring adopts a switch in the form of double busbar wiring. Each inlet and outlet interval is connected to two busbars. There is a busbar interval between the two busbars for connection or conversion between the two busbars. It consists of two isolating switches, two overhaul grounding switches and one set of circuit breakers. When one of the busbars needs to be overhauled, the load can be switched by operating the...

AI Technical Summary

Problems solved by technology

[0004] For some extremely important substations, double-busbar wiring or double-busbar segmented wiring is used. When one of the busbars needs to be overhauled, only the other busbar is left to run for the interval between the incoming and outgoing lines of the busbar, that is, there is a single-busbar operation. risk, if the busbar also fails, there will be a power outage in the whole station, and even cause the substation to lose all loads

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