Partial Discharges in XLPE Insulated Cable under Superimposed Transient Voltages

Conference Paper (2019)
Author(s)

J. Wu (TU Delft - DC systems, Energy conversion & Storage)

PVM Nes (TU Delft - ESP LAB)

A. Rodrigo Mor (TU Delft - DC systems, Energy conversion & Storage)

Johan Smit (TU Delft - EEMS - General)

Research Group
DC systems, Energy conversion & Storage
DOI related publication
https://doi.org/10.1109/EIC43217.2019.9046529
More Info
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Publication Year
2019
Language
English
Research Group
DC systems, Energy conversion & Storage
Pages (from-to)
221-225
ISBN (print)
978-1-5386-7625-7
ISBN (electronic)
978-1-5386-7624-0

Abstract

This paper investigates the partial discharges (PD) at artificial defects in a cross-linked polyethylene (XLPE) insulated cable joint under superimposed voltage. The experiments are conducted on a 16-meter long 150 kV commercial XLPE cable, together with a cable joint and two terminations. Defects are fabricated on purpose in the cable joint. The cable system was subjected to a 50 Hz AC voltage, being in between PD extinction and inception values, superimposed with a lightning impulse voltage. Partial discharges are measured by two HFCT sensors at the two ends of the cable joint. The measurement results show that, the impulse voltage could trigger partial discharges. The partial discharge occurrence is mainly influenced by the time period during which the applied voltage is higher than PDIV.

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