Conference paper
Estimation of Medium Voltage Cable Parameters for PD Detection
Medium voltage cable characteristics have been determined with respect to the parameters having influence on the evaluation of results from PD-measurements on paper/oil and XLPE-cables. In particular, parameters essential for discharge quantification and location were measured. In order to relate a measured signal at the cable terminations to a specific PD-amplitude and location on the cable, the attenuation and the transmission speed of PD-pulses on the cable have to be known.
Consequently, the main parameter to be determined is the complex propagation constant which consists of the attenuation and phase constants. A method to estimate this propagation constant, based on high frequency measurements, will be presented and will be applied to different cable types under different conditions.
The influence of temperature and test voltage was investigated. The relevance of the results for cable diagnostics will be discussed.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 1998 |
| Pages: | 109-112 |
| Proceedings: | 1998 IEEE International Symposium on Electrical Insulation |
| ISBN: | 078034927X , 078034927x and 9780780349278 |
| ISSN: | 1089084x |
| Types: | Conference paper |
| DOI: | 10.1109/ELINSL.1998.704660 |
| ORCIDs: | Holbøll, Joachim T. |
12 kV Attenuation measurement Fault location Frequency estimation Frequency measurement Medium voltage PD-detection PD-pulse attenuation PD-pulse transmission speed Particle measurements Petroleum Propagation constant Temperature Velocity measurement XLPE cable insulation XLPE insulation cable diagnostics cable terminations complex propagation constant discharge location discharge quantification high frequency measurements high-frequency transmission line measurement impregnated insulation impulse response method insulation testing medium voltage cable parameter estimation paper/oil cable insulation partial discharge measurement phase constants power cable insulation power cable testing temperature effect test voltage effect transient response
