Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Grzybowski, Stanislaw
Committee Member
Ginn, Herbert L.
Committee Member
Schulz, Noel
Committee Member
Fowler, Jim
Date of Degree
12-11-2009
Document Type
Graduate Thesis - Open Access
Major
Electrical Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Electrical and Computer Engineering
Abstract
A growing trend in the electrical industry is to move away from overhead lines and towards underground distribution. The cables necessary for underground distribution are stressed in various ways, and one of the most ignored stresses is that of overvoltage caused by switching. The focus of this research is to determine the effects that high voltage switching impulses have on the electrical strength of medium voltage cable insulation. Accelerated aging was performed on multiple samples of XLPE and EPR cables by applying multitudes of switching impulses. At various stages of the aging process, partial discharge measurements were taken. At the end of the aging process, the ac breakdown voltage of each cable sample was determined. While more testing is necessary to gain a greater understanding of this subject, the results obtained in this study show that switching impulses weaken cable insulation, which may lead to premature failure of distribution cables.
URI
https://hdl.handle.net/11668/19395
Recommended Citation
Fulper, Jacob C (Jacob Curtis), "The Effects of Switching Impulses on the Partial Discharge Activity and Breakdown Voltage of 15 kv XLPE and EPR cables" (2009). Theses and Dissertations. 4446.
https://scholarsjunction.msstate.edu/td/4446
Comments
power cables||switching impulses||partial discharge