DocumentCode
1040430
Title
A Power-Cable Temperature Monitoring System
Author
Kortschinski, J. ; Leslie, J.R.
Author_Institution
Research Division The Hydro-Electric Power Commission of Ontario
Issue
7
fYear
1970
Firstpage
1429
Lastpage
1433
Abstract
A novel device capable of monitoring the sheath temperature of underground power cables and indicating isolated hot spots is described. The novelty is in the hot-spot detecting principle, which is based on the use of a thin liquid-filled coaxial sensing cable attached to the power cable. A hot spot causes the liquid within the sensing cable to boil, forming a vapour bubble, the latter being detected by means of a pulse-echo radar method. Design features of the device and a trial installation are described, indicating the maximum operating range to be 1400 feet and the nominal response temperature 75°C.
Keywords
Cable shielding; Coaxial cables; Electrical resistance measurement; Power cables; Radar detection; Soil measurements; Temperature measurement; Temperature sensors; Thermistors; Underground power cables;
fLanguage
English
Journal_Title
Power Apparatus and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9510
Type
jour
DOI
10.1109/TPAS.1970.292573
Filename
4074217
Link To Document