High voltage VLF testing of power cables

Author

Eager, G.S. ; Katz, C. ; Fryszczyn, B. ; Densley, J. ; Bernstein, B.S.

Author_Institution

Cable Technol. Labs. Inc., New Brunswick, NJ, USA

Volume

12

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

565

Lastpage

570

Abstract

This publication describes a laboratory test program conducted with the objective to develop a test that would replace the existing DC withstand test. The article describes the methodology used to establish the voltage duration and magnitude of VLF (0.1 Hz) high voltage field tests suitable for crosslinked polyethylene (XLPE) insulated power cable. The results show that the voltage breakdown of laboratory aged XLPE cable at 0.1 Hz is approximately equal to that at 60 Hz, that proof tests at 0.1 Hz cause very little damage to the cable, and that 0.1 Hz testing appears to be a satisfactory alternate to DC testing. Preliminary values are suggested for voltage magnitude and time duration of cable acceptance, maintenance and proof tests at 0.1 Hz for XLPE cable rated up to 35 kV. A program is underway to similarly evaluate samples of service-aged XLPE cable; as well as to demonstrate the use of the preliminary test values at typical utility installations

Keywords

XLPE insulation; ageing; electric breakdown; insulation testing; power cable insulation; power cable testing; 0.1 Hz; 35 kV; XLPE insulated power cable; cable acceptance; cable maintenance; crosslinked polyethylene; high voltage VLF testing; laboratory aged XLPE cable; power cables; proof tests; service-aged XLPE cable; voltage breakdown; voltage duration; Aging; Breakdown voltage; Dielectric breakdown; Power cables; Power generation; Shape; Signal generators; Stress; Testing; Trees - insulation;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.584323

Filename

584323