Application of Ultra-high Frequency Partial Discharge Detection in GIS Testing
In allusion to the problems encountered in the testing of gas insulated switchgear(GIS)with ultra-high frequency partial discharge detection,the typical on-site cases are studied,and the problems that may arise in processes,such as data examination,preparation of instruments and tools,test point selection,testing operation,comparison with typical waveforms and precise fault lo-cation,are analyzed.The key points of ultra-high frequency partial discharge detection are proposed,the accuracy of partial dis-charge detection is improved,which is of great significance to ensure the safe operation of power grid.