DocumentCode :
3392326
Title :
Microcavity on Tracking Failure of XLPE-SiR Interface
Author :
Gu, L. ; He, X.R.
Author_Institution :
Dept. of Electr. Eng., Chongqing Univ. of Technol., Chongqing, China
fYear :
2012
fDate :
27-29 March 2012
Firstpage :
1
Lastpage :
4
Abstract :
Micro-cavity may possibly be introduced into the XLPE-silicon rubber interface in installation of XLPE cable joint. This type of defect greatly decreases the interfacial breakdown strength and endangers the stability of power system. However, the tracking failure process is still unknown. In this paper, three types of interfaces with different dimension of micro cavity were setup by pressing together a slice of XLPE and a slice of transparent silicon rubber. A 50 Hz AC voltage source was applied on a pair of flat-round electrodes which was sandwiched at the interface with their insulation distance of 5 mm until tracking failure. The discharge light from discharge to the failure at the XLPE-SiR interface of artificial cable-joint was detected and analyzed to reveal the micro cavity on the failure of cable joint. Obtained results show that micro cavity at an XLPE-SiR interface easily leads to interfacial discharge and failure. A longer cavity more easily leads to interfacial discharge and failure than a shorter one. It is helpful in approximately analyzing the failure mechanism of XLPE-SiR cable joint.
Keywords :
XLPE insulation; cable jointing; discharges (electric); electrodes; failure analysis; power cable insulation; power system stability; rubber; silicon; AC voltage source; XLPE cable joint installation; XLPE-SiR interface; XLPE-silicon rubber interface; artificial cable-joint; cable joint failure; discharge light; flat-round electrodes; frequency 50 Hz; insulation distance; interfacial breakdown strength; interfacial discharge; microcavity; power system stability; tracking failure process; transparent silicon rubber; Cavity resonators; Degradation; Discharges (electric); Electrodes; Insulation life; Joints; Power cables;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
ISSN :
2157-4839
Print_ISBN :
978-1-4577-0545-8
Type :
conf
DOI :
10.1109/APPEEC.2012.6307319
Filename :
6307319
Link To Document :
بازگشت