부산대학교 도서관

High-pressure vacuum contactor is an important primary equipment for high-voltage power plant system in power plants. It has the advantages of low noise, long service life and frequent operation. It is mainly used for the control of high-voltage motors in factories. If the switch is repeatedly switched on and off, it will cause great impact force on the stator coil and rotor squirrel cage bar of the motor, and damage the insulation of the winding and cause overheating and fracture of the squirrel cage bar. At the same time, it may also cause bus grounding, damage or even explosion of the switch contacts. Therefore, it is necessary to analyze and discuss the fault causes of the anti-jump control loop of the high-voltage vacuum contactor of the power plant, and seek to solve the "anti-jump" scheme. The control loop is optimized by analysis to solve the fault, and technical support is also provided for the anti-jump circuit of the 6kV vacuum switch and the FC switch.