The Three Duals Connection Engineering Design And Application

With the development of society and economy, power user requirements for the reliability of power supply is increasing,"Three double" connection mode,is an inevitable trend of the development of regional distribution network with high load power."Three double" connection,is dual power supply, double line, double access connection mode.This paper studied the "principle of automatic switching device and automatic switching cabinet with three pairs of connection,and maked clear the logical realization of dual power supply automatic switching work.This paper points out that the "three double" standardized design scheme and design chart will give designers to guidance,and unified requirements. The hongfeng blocks of fields three pairs of renovation project,is the specific design three pairs of connection transformation,having certain guiding significance for the general design work...