Design and Implementation of Capacitive Equipment Insulation Testing System High Precision Synchronization

This paper briefly introduces the principle of capacitive equipment insulation testing. Since the capacitance type equipment insulation online monitoring method is not ideal enough, single turn wear type active end current sensor is used to obtain screen leak current, and the electric field coupling type transformer acquire and analyze bus bar voltage. On-site detection terminal and PC installation precision synchronous clock device realize the purpose of synchronous detection. In combination with the practice of its electric power supply company, a capacitive equipment insulation integrated test system has been implemented and obtained in the very good application in practice.