Title :
Wide and narrow band PD detection in plug-in cable connectors in the UHF range
Author :
Denissov, Denis ; Köhler, Wolfgang ; Tenbohlen, Stefan ; Grund, Ruben ; Klein, Thomas
Author_Institution :
IEH, Univ. Stuttgart, Stuttgart
Abstract :
Experience in on-line UHF partial discharge detection on high voltage plug-in cable connectors (terminations) for GIS and transformers are presented. Narrow vs. broadband, as well as zero-span measurements were carried out using a spectrum analyzer on a laboratory setup with a built-in artificial PD defect of variable intensity. A sensitivity below 5 pC turned out to be detectable by the presented UHF method. The results of the laboratory experiments demonstrate high effectiveness of the on-line UHF PD detection in plug-in cable terminations. The method can be applied to proof the quality of assembly work during commissioning as well as on a regular basis after many years in service to detect aged and risky terminations as a part of the condition-based maintenance.
Keywords :
UHF devices; electric connectors; gas insulated substations; gas insulated switchgear; partial discharges; power cables; power transformers; spectral analysers; GIS; UHF range; broadband PD detection; condition-based maintenance; high voltage plug-in cable connectors; narrowband PD detection; on-line UHF partial discharge detection; spectrum analyzer; transformers; zero-span measurements; Assembly; Connectors; Geographic Information Systems; Laboratories; Narrowband; Partial discharge measurement; Partial discharges; Spectral analysis; Transformers; UHF measurements; Cable termination; UHF; on-line diagnostics; partial discharge; wide/narrowband;
Conference_Titel :
Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1621-9
Electronic_ISBN :
978-1-4244-1622-6
DOI :
10.1109/CMD.2008.4580464
