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


Tang, Chao, Chen, George, Fu, Mingli and Liao, Rujin (2010) Space charge behavior in multi-layer oil-paper insulation under different DC voltages and temperatures. IEEE Transactions on Dielectrics and Electrical Insulation, 17, (3), 775-784. (doi:10.1109/TDEI.2010.5492250).

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Description/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

Item Type: Article
ISSNs: 1070-9878
Keywords: Space charge, oil-paper, DC voltage, multi-layer, pulsed electroacoustic (PEA)technique
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 271315
Date Deposited: 28 Jun 2010 16:23
Last Modified: 27 Mar 2014 20:16
Further Information:Google Scholar
ISI Citation Count:5
URI: http://eprints.soton.ac.uk/id/eprint/271315

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