NDLI: Importance of bushing- DGA in condition assessment of power transformers

Content Provider	IEEE Xplore Digital Library
Author	Malpure, B.D. Chaudhari, S.E.
Copyright Year	2012
Description	Author affiliation: Dielectrics Laboratory, HVPTC, R&D Centre, Crompton Greaves Limited, Mumbai, India (Chaudhari, S.E.) \|\| Department of Quality Assurance, Crompton Greaves Ltd, T1 Division, Mumbai, India (Malpure, B.D.)
Abstract	Power transformers and shunt reactors are an integral part in ascertaining the reliability of any power utility. Utilities are facing considerable pressure to ensure their critical asset's reliability due to deregulation, increased demand, economic pressures, and profit constrains. Most of the power transformers and shunt reactors develop faults and get critical over a period of time. A transformer's and reactor's condition is normally assessed based on DGA supported by electrical tests. In this paper three Case studies on 315 MVA transformers 63 MVAr are investigated. These jobs have seen high hydrogen and methane, showing faults in these jobs. However it was not supported by electrical tests such as isolation test and low voltage tests in any of the case. These jobs were physically inspected and investigated for further details. DGA was monitored throughout their period. The fault analysis is covered in this paper.
Starting Page	589
Ending Page	592
File Size	273478
Page Count	4
File Format	PDF
ISBN	9781467310192
e-ISBN	9781467310208
DOI	10.1109/CMD.2012.6416213
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-23
Publisher Place	Indonesia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges condition assessment power transformers Oil insulation Insulators Circuit faults Inductors bushings Power transformer insulation DGA
Content Type	Text
Resource Type	Article

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