Research on modeling and fault analysis of permanent magnet operating mechanism of vacuum circuit breaker

In this paper, a kind of permanent magnet operating mechanism was modeled and studied by using ADAMS and Ansoft software, and the model was verified by experiments. Then, six common faults were chosen to do simulated analysis, and opening and closing process was divided into three stages according to its force analysis, respectively. The angle displacement of main axis, which related to the moving contact's displacement, was treated as the objective to study the performance of permanent magnet operating mechanism. When the research is combined with on-line monitoring technology, it can be used to guide fault diagnosis and condition prediction of vacuum circuit breaker.