The effects of superimposed impulse transients on partial discharge in XLPE cable joint
Jiayang Wu (TU Delft - DC systems, Energy conversion & Storage)
A. Mor (TU Delft - DC systems, Energy conversion & Storage)
Johan Smit (TU Delft - EEMS - General)
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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.
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