Title :
Acoustic detection of partial discharges using non-intrusive optical fibre sensors [current transformers]
Author :
Zargari, Abbas ; Blackburn, T.R.
Author_Institution :
New South Wales Univ., Sydney, NSW, Australia
Abstract :
Conventional current transformers (CTs) normally have oil-paper insulation and a porcelain insulator in their construction. The degradation process of the oil-paper insulation gives rise to localised partial discharges (PD) within the apparatus. Therefore, on-site PD measurement is an efficient tool to detect insulation problems at an early stage. Fibre optic sensors allow continuous, on-line insulation condition monitoring and have a number of potential advantages over other sensors because of their immunity to electromagnetic interference. This paper discusses PD detection using an optical fibre sensor mounted externally on a current transformer
Keywords :
condition monitoring; current transformers; fibre optic sensors; impregnated insulation; partial discharge measurement; power transformer insulation; power transformer testing; transformer oil; 66 kV; EMI immunity; PD detection; acoustic detection; continuous online insulation condition monitoring; current transformers; external mounting; fibre optic sensors; insulation degradation; localised partial discharges; nonintrusive optical fibre sensors; oil-paper insulation; partial discharge detection; porcelain insulator; Acoustic measurements; Acoustic signal detection; Current transformers; Degradation; Electromagnetic measurements; Oil insulation; Optical fiber sensors; Partial discharges; Porcelain; Power transformer insulation;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on
Conference_Location :
Vasteras
Print_ISBN :
0-7803-4237-2
DOI :
10.1109/ICSD.1998.709350
