Long term pre-qualification testing program on a 230 kV XLPE cable system

Author

Champion, Thomas C. ; Agostinelli, Marciano F. ; Rosevear, Robert D.

Author_Institution

Georgia Power Res. Center, Forest Park, GA, USA

Volume

10

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

10

Lastpage

17

Abstract

This paper describes the installation, testing, and results of a long term, full scale laboratory evaluation of a 230 kV XLPE insulated cable system. System components included two innovative, pre-molded splices, a 128 meter (420 foot) cable run, and two silicone oil filled, porcelain cable terminations. Load cycle aging was performed on the cable system over a four year period. After successfully completing the outdoor aging program, the system was exposed to a final impulse breakdown test. Results demonstrated the importance of considering thermomechanical bending in an aluminum conductor, XLPE insulated designs. The influence on cable ampacity of solar heating at riser transitions was also demonstrated

Keywords

XLPE insulation; ageing; bending; cable jointing; electric breakdown; electric connectors; impulse testing; insulation testing; life testing; power cable insulation; power cable testing; power cables; solar heating; 128 m; 230 kV; 420 feet; XLPE cable system; aluminum conductor; cable ampacity; impulse breakdown test; insulated cable system; load cycle aging; long term testing; outdoor aging program; porcelain cable terminations; pre-molded splices; pre-qualification testing; riser transitions; silicone oil; solar heating; thermomechanical bending; Aging; Cable insulation; Electric breakdown; Foot; Impulse testing; Laboratories; Oil filled cables; Petroleum; Porcelain; System testing;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.368421

Filename

368421