Spare power automatic switching method for 220kV side circuit and bus of 220kV transformer station
A 220kv, bus-connection standby automatic switching technology, applied in the direction of circuit devices, electrical components, emergency power supply arrangements, etc., can solve difficult promotion, limited adaptability of system operation mode, difficulty in acceptance of standby automatic switching devices and operation management workload and other issues to achieve the effect of improving reliability and adaptability
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[0016] For the 220kV substation with partition measures, the main wiring forms on the 220kV side are different, and the conventional ones have double busbars with bypass (the simplified wiring diagram is as follows figure 1 As shown), double busbars and single section of double busbars, etc., under various main wiring forms, the main power supply of the 220kV busbars is generally the 220kV line of the station.
[0017] Accordingly, the present invention aims to design and provide a 220kV side line and busbar backup self-switching method of a 220kV substation, which can be applied to the conventional main wiring form of the 220kV side of a 220kV substation, and can be used as a standardized backup self-switching method , can play a role in various possible operation modes in actual operation, that is, for a site where 220kV busbars operate separately or take 220kV line hot standby to realize zoning measures, when all working power sources in a certain mode trip, according to the...
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