Analysis of the Application and Interlock for the Spare Power Automatic Switching Used in Distribution Network
Two modes of spare power automatic switching which equip in the high and low voltage side of main transformers are used in the low voltage distribution network.The former one is divided into FBZT and LBZT.To prevent the secondary oscillation caused by closing switches on the permanent failure,the automatic switching should be looked according to the different main electrical wiring diagram.This paper analyzes the different modes of BZT used in corresponding wiring diagram of Shanghai urban power supply company distribution networks.The reason for the spare power automatic switching interlock is summarized.Finally,the technology of interlock is introduced in this pa
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