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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Given, M.J. Fouracre, R.A. MacGregor, S.J. Judd, M. Banford, H.M. |
| Copyright Year | 1994 |
| Abstract | Considerable effort has gone into developing polymer formulations and cable designs to minimize failures through water tree growth. However, diagnostic techniques still are required to enable the estimation of the level of damage present within a service cable. This paper reports on progress regarding the application of dielectric spectroscopy to cable diagnostics. A 40 kV, crosslinked polyethylene (XLPE) insulated coaxial cable was used as a model power cable. Sample lengths were immersed in a potassium chloride solution and some of these were subjected to AC electrical stress. After an 8 week duration, a high density of tress was found in the electrically stressed cable. Dielectric spectra have been measured for both sample types in the frequency range of 10/sup -5/ to 10/sup 5/ Hz. Insertion loss measurements were also carried out in the frequency range of 3/spl times/10/sup 5/ to 3/spl times/10/sup 9/ Hz. From both types of measurement, it was possible to distinguish between the cables containing water trees and those that were free from water tree structures. These approaches could therefore be developed in order to provide diagnostics for the detection of water tree damage in electrical power cables. |
| Sponsorship | National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA |
| Starting Page | 917 |
| Ending Page | 920 |
| Page Count | 4 |
| File Size | 355249 |
| File Format | |
| ISSN | 10709878 |
| Volume Number | 8 |
| Issue Number | 6 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-12-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Electrochemical impedance spectroscopy Power cables Coaxial cables Trees - insulation Dielectric loss measurement Frequency measurement Loss measurement Dielectric measurements Polymers Polyethylene |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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