Study of Partial Discharge Mode Recognition of 10kV XLPE Cable Joint under Oscillating Voltage

The oscillating voltage test method is widely used in partial discharge detection for its non-destructive characteristics, and the pattern recognition of partial discharge signal of different defects is the key to the detection of partial discharge. According to the common cable defect type, four kinds of artificial defect models of cable joints such as outer semi-conductive layer cutting-edge, outer semi-conductive layer air gap, high potential metal tip and the stress cone lap too long in 10 kV cross linked polyethylene cable are made, oscillating voltage is applied to them and the characteristics of partial discharge is tested. A recognition method on back propagation artificial neural network is introduced to apply to four kinds of artificial defect models in this paper, which using…