Research and Application of GIS Partial Discharge Signal Positioning Based on UHF Intelligent Sensors

Partial discharge inspection of the substation GIS and determination of the location of the partial discharge source are important means to discover equipment insulation defects and prevent major accidents. At present, the existing partial discharge source positioning methods are mainly applied to online monitoring devices with high sampling rate and high precision synchronization, which have the problems of high cost, inconvenient deployment and wiring, and high requirements for inspection personnel. Based on the establishment of a GIS partial discharge positioning system and the UHF smart sensors, a UHF smart sensor positioning method has been proposed in this paper. Through the establishment of the topology between space UHF smart sensors and contact UHF smart sensor topology, identify the location of the GIS partial discharge source by the remote online monitoring algorithm. After field application and verification, the partial discharge positioning system can accurately locate the location of the partial discharge source, which proves the feasibility of the partial discharge positioning system based on UHF smart sensors, which can reduce the difficulty of localization of partial discharge for on-site personnel.