The Study of Capacitive Equipment Fault Location Based on the Relative Measurement Method

摘要

There is insufficient that get PT secondary voltage signal as a phase reference in capacitive device insulation online monitoring, in order to monitor the insulation accurately, this paper analyzes the advantages of using the relative measurement method for insulation monitoring, and determined the normal range of the dielectric loss by historical monitoring data and the number of failure equipment, furthermore positioned single or multiple faulty equipment by fault diagnosis matrix accurately. Finally, verified the effectiveness of the method by artificial simulation experiments in the laboratory.