Electrical Aging Phenomena of XLPE and EPR Cable Insulation Energized by Switching Impulses

Author

Grzybowski, S. ; Shrestha, P. ; Cao, L.

Author_Institution

Dept. of Electr. & Comput. Eng., Mississippi State Univ., Starkville, MS

fYear

2008

fDate

9-12 Nov. 2008

Firstpage

422

Lastpage

425

Abstract

During the operation of power system, the insulation of high voltage extruded cables will be placed under high electrical stress, including overvoltages caused by switching surges. In the study, 15 kV XLPE and EPR power cable samples are energized by switching impulses. The aging phenomena of cable insulation are observed by the measurement of partial discharge level and AC breakdown voltage during the aging process. The study helps to determine the reliability of power cables, as well as a better understanding of the aging mechanism. Many factors other than aging by switching surges have to be considered as an aging force for the insulation degradation.

Keywords

cable insulation; electric breakdown; power systems; switching; AC breakdown voltage; cable insulation; dielectric strength; electrical aging; partial discharge; power system; switching impulses; Aging; Cable insulation; Dielectrics and electrical insulation; Paramagnetic resonance; Partial discharge measurement; Power cables; Power system measurements; Stress; Surges; Voltage; AC breakdown; Degradation; cable insulation; dielectric strength; partial discharges; switching impulse;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application, 2008. ICHVE 2008. International Conference on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-3823-5

Electronic_ISBN

978-1-4244-2810-6

Type

conf

DOI

10.1109/ICHVE.2008.4773963

Filename

4773963