Title :
Restraining devices to counter the migration of HV cables in duct
Author :
Tarnowski, Janislaw ; Iordanescu, Mircea ; Awad, Ray
Author_Institution :
Hydro-Quebec, Que., Canada
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;
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
DOI :
10.1109/TDCLLM.2000.882801
