Temperature influence on wave propagation in XLPE power cables: on-line and laboratory measurements
2009 (English)Article in journal (Other academic) Submitted
This paper investigates the influence of temperature on the wave propagation in medium voltage XLPE power cables. During an on-line time domain reflectometry measurements a periodicity of the pulse velocity was observed. These variations are attributed to the temperature changes of the cable caused by the load cycling. The results of the on-line measurements were verified by laboratory measurements of the propagation constant as a function of temperature in the 0.3 – 500 MHz frequency range. It is shown that the changes in the propagation constant are mainly caused by the temperature dependent permittivities of the semiconducting shields and the XLPE insulation.
Place, publisher, year, edition, pages
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-9870OAI: oai:DiVA.org:kth-9870DiVA: diva2:134369
QS 201203152009-01-202009-01-202012-03-15Bibliographically approved