NDLI: Shunt capacitance influences on single-phase transformer FRA spectrum

Content Provider	IEEE Xplore Digital Library
Author	Bagheri, M. Phung, B.T. Blackburn, T. Naderian, A.
Copyright Year	2013
Description	Author affiliation: Transm. & Distrib. Technol., Kinectrics, Toronto, ON, Canada (Naderian, A.) \|\| Univ. of New South Wales, Sydney, NSW, Australia (Bagheri, M.; Phung, B.T.; Blackburn, T.)
Abstract	Frequency response analysis (FRA) is considered as an accurate, fast, effective and sensitive method for detection of mechanical defects within power transformers, providing worthy information on active part structure. FRA measurement has been industrialized and employed since the last decade while FRA spectrum interpretation is still under development. The interaction of distributed resistances, series and shunt capacitances as well as self- and mutual-inductances in transformer winding leads to FRA spectrum oscillations. In fact, each and every parameter has its own impact on this spectrum. This study has concentrated on shunt capacitance influences on frequency response spectrum oscillations in Bode diagram. Shunt capacitance impacts on low-, mid- and high-frequency bands of FRA spectrum are discussed. A practical study on a single phase air-core glassy model transformer is carried out to explore the influence of shunt capacitances of HV and LV windings with respect to the transformer tank on FRA spectrum. In addition, a single phase 11/0.25 kV, 25 kVA core type distribution transformer is also tested to evaluate the shunt capacitance impacts on FRA fluctuations.
Sponsorship	IEEE Dielectr. Electr. Insul. Soc.
Starting Page	225
Ending Page	229
File Size	772637
Page Count	5
File Format	PDF
ISBN	9781467347389
e-ISBN	9781467347440
e-ISBN	9781467347396
DOI	10.1109/EIC.2013.6554238
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Windings Capacitance Resonant frequency Frequency response Frequency measurement Power transformer insulation Transformer winding deformation Frequency response analysis Shunt capacitance Transformer diagnosis
Content Type	Text
Resource Type	Article

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