Analysis and Preventive Measures for Abnormal Heating of 500kV Capacitive Voltage Transformers

In response to the problem of abnormal fever of 500KV capacitor voltage transformers, according to the internal structure and infrared thermal image, the preliminary judgment is the flange fever caused by discharge after the connection of the copper foil connector and the upper lid., Jie loss and insulation oil test and on-site disintegration examination. The reason for determining the problem is that the internal connecting tablets are discharged after the connection part of the connection between the upper cover. Long-term discharge causes the expansion to break, leaks from the flange of the insulating oil, and the heat generated by the discharge is passed to the flange to cause abnormal fever. Finally, the corresponding preventive measures are proposed to the author of such problems to provide you with a reference for finding the problem.