Application Analysis of Load Break Switch in 500 kV Substation
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Abstract
At present, Circuit breaker has been used as the main switch of reactive-load compensation equipment in 500 kV substation. The circuit breaker of the reactive power compensation circuit always has a short life expectancy and needs frequently replaced dued to the switching test of circuit breaker designed for connection with the short-circuit current. A specified load break switch is introduced to switch the high-capacity reactive power compensation. The load break switch is a mature technology and suitable for the actual condition with the frequent operation of reactive power circuit, so it can extremely extends the electrical life of the switches. According to the characteristic analysis of specified load break switches, BPA software is used to emulate the application feasibility of the load break switches in the 500 kV substation.
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