Analysis of Phase Selection Control for High Voltage AC Circuit Breakers
With the vigorous development of the social economy and the continuous progressing of industry,various industries have increasingly high requirements for the continuity and stability of power supply.In power plants and substations at all levels,types of loads and operating conditions are becoming increasingly complex.Overvoltage and surge current may be generated during making and breaking of these special loads,which can damage the equipment insulation performance and finally leads to an increase of failure rate.This article analyzes and reserch the application of synchronous controller in circuit breaker making and breaking process,at the same time,combined with engineering practices,the target control and temperature compensation strategies have been determined,that is,making and breaking these loads at zero crossing point of the voltage or current of each phase,reduce the adverse effects of overvoltage and surge current,and improve the accuracy of making and breaking target through adaptive and compensation strategies.
high-voltage AC circuit breakercontrol strategyload conditiontarget pointtemperature compensation
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