On-site diagnosis of XLPE transmission power cables with damped AC technique

Conference paper (2010)

Authors

P Cichecki OLD High-Voltage Technology and Management
E. Gulski OLD High-Voltage Technology and Management
J.J. Smit OLD High-Voltage Technology and Management
L.A. Chmura OLD High-Voltage Technology and Management
R Jongen External organisation
Research Group
OLD High-Voltage Technology and Management
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Published Date

2010

Language

English

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Research Group

OLD High-Voltage Technology and Management

Abstract

Diagnostics of HV power cables are playing an important role in the meaning of two aspects: 1) on-site diagnostic of new installation, where a commissioning test has to prove the absence of any defects in the cable insulation and accessories, after transportation and installation. 2) On-site diagnostic of a serviced aged power cable where the condition after a period in service or information about workmanship of repairs has to be known. As it is known some installation defects can result in breakdown even after a successful after-laying test. Obtaining more diagnostic parameters like; Withstand Voltage, Partial Discharges (PD) and Dielectric Loss (tan ¿), providing a indication of insulation condition and accessory performance. In this paper several examples of on-site tests on new and serviced aged XLPE HV power cables will be discussed. Examples of: after-repair, after-laying, and condition assessment tests will be presented as performed with Damped AC diagnostics.