NDLI: Deriving an equivalent circuit of transformers insulation for understanding the dielectric response measurements

Content Provider	IEEE Xplore Digital Library
Author	Saha, T.K. Purkait, P. Muller, F.
Copyright Year	1986
Abstract	Preventive diagnosis and maintenance of transformers have become more and more popular in recent times in order to improve the reliability of electric power systems. Dielectric testing techniques such as return voltage measurement (RVM) and polarization-depolarization current (PDC) measurement are being investigated as potential tools for condition assessment of transformer insulation. A better understanding and analysis of the dielectric test results are only possible with a clear understanding of the physical behavior of the insulation system in response to moisture and aging. A circuit model, which describes the dielectric behavior of the transformer's main insulation system, has been parameterized in this paper. The values of the parameters of the model have been identified from the dielectric tests. A correlation has been developed between the physical condition of the insulation and the equivalent model parameters that enable a clear and transparent interpretation of the dielectric test results.
Sponsorship	IEEE Power Engineering Society
Starting Page	149
Ending Page	157
Page Count	9
File Size	433823
File Format	PDF
ISSN	08858977
Volume Number	20
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Equivalent circuits Dielectrics and electrical insulation Power transformer insulation Dielectric measurements Circuit testing Insulation testing Power system reliability Preventive maintenance Voltage measurement Polarization transformer insulation Depolarization current dielectric response equivalent circuit modeling polarization current return voltage
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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