DocumentCode :
2775915
Title :
Minimum voltage rating of sheath voltage limiters in underground cable systems: The influence of corrugated cable sheaths
Author :
Nichols, Phillip
Author_Institution :
Univ. of Newcastle, Newcastle, NSW, Australia
fYear :
2012
fDate :
4-7 Sept. 2012
Firstpage :
1
Lastpage :
6
Abstract :
Sheath voltage limiters (SVL) are a critical component of an underground cable´s protection system. SVLs must be sized such that, under steady state fault conditions, no conduction through the arrester occurs. This could otherwise lead to a catastrophic failure. A SVL failure [1] under steady state fault conditions prompted an investigation into the adequacy of traditional approaches used to model cable sheaths and underground cable networks. Injection tests have demonstrated that the type of sheath used has a large influence over the sheath voltage profile under faulted conditions. This is particularly evident with corrugated sheaths. In this paper, two common types of corrugated sheaths are investigated - the helically corrugated sheath (HCS) and the annularly corrugated sheath (ACS). The paper establishes improved models for each type of sheath and compares these models to sheath voltage profiles obtained from injection tests on three different types of underground cable systems.
Keywords :
cable sheathing; failure analysis; fault diagnosis; limiters; underground cables; SVL failure; annularly corrugated sheath; corrugated cable sheaths; helically corrugated sheath; injection tests; minimum voltage rating; sheath voltage limiters; steady state fault conditions; underground cable networks; underground cable protection system; Cable insulation; Cable shielding; Earth; Impedance; Mathematical model; Power cables; Voltage measurement; Corrugated Sheath; EMTP-RV; Sheath Voltage Limiter; Underground Cables;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Universities Power Engineering Conference (UPEC), 2012 47th International
Conference_Location :
London
Print_ISBN :
978-1-4673-2854-8
Electronic_ISBN :
978-1-4673-2855-5
Type :
conf
DOI :
10.1109/UPEC.2012.6398659
Filename :
6398659
Link To Document :
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