A new integrated diagnostic partial discharge monitoring strategy for HV plant items: Combining UHF couplers and the IEC60270 standard

This paper presents the initial project developments of a new integrated approach to partial discharge (PD) monitoring of HV plant through the combined simultaneous application of UHF and IEC60270 technology. The benefits and limitations of both techniques are briefly described, and consideration of the power and capabilities of combining both techniques into a new investigative tool for PD research and PD monitoring is presented. Initial results of the combined approach show that it may be possible to discriminate different sources of PD through characterisation plots of the IEC60270 apparent charge and the UHF energy. Future plans, developments and assessments of the combined research tool and monitoring strategy are also discussed.