The effects of superimposed impulse transients on partial discharge in XLPE cable joint

Journal article (2019)

Authors

J. Wu DC systems, Energy conversion & Storage - EEMCS
A. R. Mor DC systems, Energy conversion & Storage - EEMCS
J.J. Smit EEMS - General
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2019 J. Wu, A. R. Mor, J.J. Smit
DOI: https://doi.org/10.1016/j.ijepes.2019.03.031
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Published Date

2019

Language

English

Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

In practice, cross-linked polyethylene (XLPE) power cables can be subjected to alternating voltage with superimposed impulse transients. Such impulse transients may initiate partial discharges (PD) in insulation defects even below AC inception voltage. An initiated PD may persist under AC, which will cause insulation degradation. This paper investigates the PD behavior in MV XLPE cable accessories under impulse transients. Different scenarios of PD behavior are measured, described and analyzed. Based on the results, the effects of impulse transients on PD are summarized.