Title :
VLF testing and diagnosis on medium voltage power cables
Author :
Mohaupt, Peter ; Baur, Martin ; Schlick, Timo
Author_Institution :
BAUR Pruf- und Messtechnik GmbH, Sulz, Austria
Abstract :
The advantages on VLF (very low frequency) on site testing compared to conventional testing at power frequency are shown in practical and dielectrical aspects. Furthermore VLF test voltages enable the possibility of diagnosis on site. The two well established diagnosis methods, dissipation factor (DF) measurement and partial discharge (PD) measurement are explained. Where the DF diagnosis gives a tool for judgement of the ageing status especially of plastic cables, the PD diagnosis enables detection of single defects within a cable system. The economic advantages of diagnosis are shown in practical examples. An outlook for application on VLF high voltage on site test systems concludes the paper.
Keywords :
XLPE insulation; insulation testing; partial discharge measurement; power cable insulation; power cable testing; PE insulation; VLF diagnosis; VLF test voltages; VLF testing; XLPE insulation; ageing; dielectric aspects; dissipation factor measurement; medium voltage power cables; partial discharge measurement; plastic cables; power frequency; single defects detection; Aging; Dielectric measurements; Frequency; Medium voltage; Partial discharge measurement; Partial discharges; Plastics; Power cables; Power generation economics; Testing;
Conference_Titel :
Transmission and Distribution Construction, Operation and Live-Line Maintenance, 2003. 2003 IEEE ESMO. 2003 IEEE 10th International Conference on
Print_ISBN :
0-7803-7917-9
DOI :
10.1109/TDCLLM.2003.1196487