Development of prefabricated type straight through joint for 275 kV XLPE cable

Author

Tanaka, Takeshi ; Sekii, Yasuo ; Satoh, Hideo ; Yamaguchi, Masayuki

Author_Institution

Tokyo Electric Power Co., Japan

fYear

1991

fDate

22-27 Sep 1991

Firstpage

243

Lastpage

249

Abstract

The research involved in developing a prefabricated-type straight-through joint for 275 kV cross-linked polyethylene (XLPE) cable is described. Based on a review of the results of electric field analysis, a compact insulation structure using a molded epoxy insulation unit and a molded ethylene propylene rubber (EPR) stress-relieving cone was designed. The AC and lightning impulse voltage test as well as the short-circuit test and the offset test were conducted on the joint developed. The results have shown that the joint possesses excellent assembly properties and superb insulation performance. The accelerated long-term aging test was also conducted for six months and provided verification that the joint developed has adequate long-term reliability

Keywords

cable insulation; cable jointing; insulation testing; life testing; organic insulating materials; polymers; power cables; 275 kV; AC test; XLPE cable; accelerated long-term aging test; compact insulation structure; cross-linked polyethylene; electric field analysis; lightning impulse voltage test; long-term reliability; molded epoxy insulation unit; molded ethylene propylene rubber; offset test; prefabricated-type straight-through joint; short-circuit test; stress-relieving cone; Accelerated aging; Assembly; Dielectrics and electrical insulation; Electric fields; Impulse testing; Lightning; Paramagnetic resonance; Polyethylene; Rubber; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference, 1991., Proceedings of the 1991 IEEE Power Engineering Society

Conference_Location

Dallas, TX

Print_ISBN

0-7803-0219-2

Type

conf

DOI

10.1109/TDC.1991.169514

Filename

169514