The Impact of Interfaces and Space Charge Formation on Breakdown Strength of Epoxy Resin

被引：0
|
作者：
Iddrissu, I. [1 ]
Rowland, S. M. [1 ]
Tzimas, A. [2 ]
机构：
[1] Univ Manchester, Manchester M13 9PL, Lancs, England
[2] Alstom Grid UK, Levallois Perret, France
来源：
2014 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (CEIDP) | 2014年
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The re-emergence of HVDC necessitates re-evaluation of dielectric materials. Epoxy resin is employed as a dielectric material for joints and terminations in HV electrical systems up to about 75 kV, and higher ratings are required. Under DC however, space charge accumulation is a problem especially where interfaces are encountered. In this study, epoxy-epoxy laminates were fabricated and tested for space charge formation, using the PEA method, and breakdown strength under AC and DC were investigated. It was found that negative charges are accumulated at the layer interface and the breakdown strength under DC conditions is about 39% and 35% higher than that under AC condition for single and double layer samples respectively.
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页码：90 / 93
页数：4
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