NDLI: Space charge dynamics in pressboard-oilpressboard multilayer system under DC voltages

Content Provider	IEEE Xplore Digital Library
Author	Mingli Fu Bing Luo Shuai Hou Yifan Liao Miao Hao Chen, G.
Copyright Year	2015
Description	Author affiliation: Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK (Miao Hao; Chen, G.) \|\| Electr. Power Res. Inst., China Southern Power Grid, Guangzhou, China (Mingli Fu; Bing Luo; Shuai Hou; Yifan Liao)
Abstract	Converter transformers play a critical role in HVDC power transmission system. Space charge is a general concern for dielectric system under DC field. In this paper, the space charge behavior in a sandwiched oil-pressboard insulation system has been investigated using the pulsed electro-acoustic (PEA) method. The presence of homo-charges in the pressboards bulk and hetero-charges at the two interfaces between oil gap and pressboards leads to the electric field enhancement in the pressboards but reduction in the oil gap. The electric field enhancement is much larger than the value estimated by the Maxwell-Wagner polarization.
Starting Page	112
Ending Page	115
File Size	960794
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295221
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space charge Electric fields Aging Power transformer insulation Oil insulation Dielectrics interface HVDC oil-pressboard space charge PEA
Content Type	Text
Resource Type	Article

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