Statistical Behaviour of Internal Partial Discharges at DC Voltage

Abstract

In this paper the succession of partial discharges at DC voltage is discussed. For the measurements presented here, the Townsend-like discharge mechanism was found to be dominant. Using a simple R C circuit, the discharge behaviour can be described. Several discharge parameters, such as the average time lag or the voltage drop of a discharge, can be evaluated. The discharge magnitude can also be predicted.