On-Line Partial Discharge Detection and Monitoring of a 110 kV/6 kV Power Transformer in a Refinery
During routine on-line partial discharge (PD) spot testing of high-voltage (HV) cables in a European refinery, unexpected PD activity was detected from a connected 110 kV/6 kV, 63 MVA power transformer. Follow-up investigations and on-line PD monitoring identified multiple PD activities originating from the active part...