NDLI: Space charge behavior in multi-layer oil-paper insulation under different DC voltages and temperatures

Content Provider	IEEE Xplore Digital Library
Author	Chao Tang Chen, G. Fu, M. Rui-jin Liao
Copyright Year	1994
Abstract	Oil-paper as a reliable insulation system is widely used in power transformers and cables. The dielectric properties of oil-paper insulation play an important role in the reliable operation of power equipment. However, the formation and dynamics of space charge can affect the performance of insulation material. In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages at different temperatures. Charge behavior in the insulation system has been analyzed and the influence of temperature on charge dynamics was discussed. The test results show that homocharge injection takes place under all the test conditions, the applied dc voltage mainly effect the amount of space charge, while the temperature has greater influence on the distribution and mobility of space charge inside oil-paper samples.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	913988
File Format	PDF
ISSN	10709878
Volume Number	17
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space charge Oil insulation Voltage Temperature Dielectrics and electrical insulation Power transformer insulation Power system reliability Testing Cable insulation Power transformers pulsed electroacoustic (PEA) Space charge, oil-paper, DC voltage, multi-layer
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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