Restraining devices to counter the migration of HV cables in duct

Author

Tarnowski, Janislaw ; Iordanescu, Mircea ; Awad, Ray

Author_Institution

Hydro-Quebec, Que., Canada

fYear

2000

fDate

2000

Firstpage

78

Lastpage

82

Abstract

This paper deals with the development, testing and installation of special devices on Hydro-Quebec´s underground high-voltage transmission system which limit the displacement of cables installed in individual ducts. The devices are installed in manholes at the exit and/or entrance to the cable duct. The principle of two inverted cones is used to create a progressive restraining force applied to an axially-shifting cable. Several laboratory cycling tests were used to validate the performance of such a solution before its use on a 120 kV line

Keywords

power cables; underground cables; 120 kV; HV cable migration; Hydro-Quebec; axially-shifting cable; cable duct; cables displacement; cycling tests; inverted cones; manholes; progressive restraining force; restraining devices; underground high-voltage transmission system; Costs; Counting circuits; Ducts; Inspection; Laboratories; Mechanical cables; Mouth; Springs; System testing; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings. 2000 IEEE ESMO - 2000 IEEE 9th International Conference on

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-6625-5

Type

conf

DOI

10.1109/TDCLLM.2000.882801

Filename

882801