NDLI: Study on Life Prediction Method of Oil Immersed Power Transformer

Content Provider	IEEE Xplore Digital Library
Author	Zhang Tao Cai Jin-ding
Copyright Year	2008
Description	Author affiliation: Coll. of Electr. Eng. & Autom, Fuzhou Univ., Fuzhou (Zhang Tao; Cai Jin-ding)
Abstract	Moisture and degradation of oil-immersed power transformer dielectric material are the key factors for its failures. Therefore, in this paper moisture content, aging degree and their influence on transformer dielectric material are discussed. Chemical analyses can provide direct information on parameters, however, most chemical analyses must be performed under laboratory conditions and for some chemical analyses paper samples are needed. To overcome these disadvantages, dielectric response measurements have been introduced for state assessment of transformer dielectric material, especially for the evaluation of water content in transformer pressboard. Voltage response measurement is one of the effective diagnosis and life assessment methods. In this paper application of voltage response measurement, reliability of power transformer life assessment and reasonable explanation of polarization spectrum are introduced in detail. Investigations of several transformers in new and aged state of different designs show the voltage response measurement results can assess aging degree effectively. Therefore, it may be concluded that the method is one of the effective and credible life prediction methods of power transformer.
Starting Page	486
Ending Page	489
File Size	2602770
Page Count	4
File Format	PDF
ISBN	9781424425488
DOI	10.1109/CEIDP.2008.4772765
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Prediction methods Petroleum Power transformers Oil insulation Dielectric materials Aging Chemical analysis Dielectric measurements Voltage measurement Moisture
Content Type	Text
Resource Type	Article

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Study on Voltage Response Method of Transformer Condition Assessment

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Study on Life Prediction Method of Oil Immersed Power Transformer

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