What is Partial Discharge? As the new podcast demonstrates, Partial Discharge (PD) is a small spark that occurs wherever insulation is not at full strength due to manufacturing faults, damage, mechanical breakdown, contamination ageing. 85% of disruptive substation failures are PD related, and once present, PD activity will always increase and will inevitably deteriorate towards failure, which can be catastrophic. By detecting PD it is possible to predict such failures in HV assets long before they occur.
