Title :
Diagnostics of transformer insulation based on dielectric response measurements
Author :
Jadav, Raj B. ; Saha, Tapan K. ; Ekanayake, Chandima
Author_Institution :
Sch. of ITEE, Univ. of Queensland, St. Lucia, QLD, Australia
Abstract :
Dielectric response measurements on oil-impregnated pressboard samples of different density and moisture content at different ageing times are analysed in this paper. In order to understand the impact of moisture, ageing condition of the insulation and other ageing products on dielectric response measurements, samples are prepared under different conditions and contribution of various parameters are determined. To understand the impact of vibration on mechanical strength of solid insulation a vibration experiment is designed and results are analysed in this paper. Then, analysis of measurements on two field transformers are also carried out based on the findings from the laboratory experiments on oil-impregnated pressboard samples.
Keywords :
dielectric measurement; impregnated insulation; transformer oil; vibrations; dielectric response measurement; mechanical strength; moisture content; oil-impregnated pressboard; transformer insulation diagnostics; two field transformer; vibration; Aging; Dielectric measurement; Dielectrics; Insulation; Moisture; Permittivity; Vibrations; Ageing; Freuquency Domain Spectroscopy; Moisture; Paper insulation; Polarisation and depolarisation Current;
Conference_Titel :
Condition Assessment Techniques in Electrical Systems (CATCON), 2013 IEEE 1st International Conference on
Conference_Location :
Kolkata
Print_ISBN :
978-1-4799-0081-7
DOI :
10.1109/CATCON.2013.6737504
