Partial Discharge Measurement Of Stator Windings Of Generators Based On Directional Sensors Of Non-Contact With High Voltage Bus

Based on the requirement of electrica l power plants, we designed a new type of sensors for stator winding Partial Discharge measurement online. The sensors are of good insulation, high sensitivity, easy installation on site, and good safety, suitable for on - site application. We developed a se t of directional sensors with the analyzing software for eliminating pulse interference from the transformer side based on our developed non - contact type PD sensors. We also developed a PD on - line detecting system for stator windings of generators, which c onsists of a set of non - contact type directional sensors, digital system, and software. The detecting system can monitor PD online, reject noises, analyze PD faults, and show the finger prints of the detected PD.