高压断路器分合闸线圈电流采集实验平台与故障模拟实验研究

High voltage circuit breaker is one of the most important electrical apparatuses and the opening/closing coil is a key component of its operating system. In recent years, the fault of the opening/closing coil has occurred, which seriously affects the safety performance of the power system. In this paper, the loop structure and action principle of a high voltage circuit breaker’s opening/closing coil is studied, the simulation prototype of the circuit breaker mechanism is designed, and a test platform for collecting the current of the circuit breaker is set up. Based on the whole platform, opening/closing coil current is collected both in normal and abnormal conditions. After that,the characteristic parameters of current curves were extracted and the parameters of those curves was analysed. It can be concluded that characteristic parameters of opening/closing coil current will changed obviously when devices have malfunctions. The work of this paper provided test basis for fault diagnosis.