Partial Discharge Investigation on XLPE Insulated Medium Voltage Underground Power Cables Using UHF Technique

Conference: VDE-Hochspannungstechnik 2016 - ETG-Fachtagung
11/14/2016 - 11/16/2016 at Berlin, Deutschland

Proceedings: ETG-Fb. 150: VDE-Hochspannungstechnik 2016

Pages: 7Language: englishTyp: PDF

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Arumugam, Saravanakumar (University of Rostock, HHT, Institute of Electric Power Engineering, 18059 Rostock, Germany)
Gortschakow, Sergey (Leibniz Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany)

This paper investigates on a simple alternative method to assess the partial discharge (PD) condition of an XLPE insulated medium voltage (MV) underground power cable. The objectives are initially simulated on a ladder network model of a power cable and later experimentally verified on test samples extracted from actual underground cables. These cables had been already in-service and removed due to PD defect condition. First, a simple RC circuit model that adequately represents the behaviour of power cable is selected. The cable is represented as a complex ladder network of resistance, inductance and capacitance. Later, the PD condition is introduced into the chosen ladder network model and simulated. The PD condition is represented through an a