Partial Discharge Detection in XLPE Cable Joint Based on Electromagnetic Coupling Method

摘要

Aiming at the partial discharge (PD) characteristics of XLPE cable, a set of PD detection system which bases on the wideband current sensor is developed. The amplitude-frequency characteristics of the wideband current sensor and its influencing factors such as iron core material, permeability, turns of the coil and integrating resistor are analyzed by experiments. Finally, four typical partial discharge models are designed, and the PD detection system is utilized to detect them. The sensor signals corresponding to different partial discharge models are analyzed.