Transformer internal over-voltages caused by remote energisation

被引：0

作者：

Lapworth, J. A. ^{[1
]}

Wilson, A. ^{[1
]}

机构：

[1] Doble PowerTest Ltd, Surrey GU3 1LZ, England

来源：

2007 IEEE POWER ENGINEERING SOCIETY CONFERENCE AND EXPOSITION IN AFRICA, VOLS 1 AND 2 | 2007年

关键词：

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

There have been several cases of dielectric faults and failures in power transformers identified internationally that have been associated with system operation. This paper discusses UK examples and concludes the evidence indicates internal over-voltages arising from part winding resonance. These resonances are initiated by remote energisation, either intentionally or by the action of automatic re-energisation schemes after line trips. Some designs are more prone to the problem, and it is here that diagnostics such as sweep frequency response analysis may give some indication as to designs more at risk.

引用

页码：559 / 564

页数：6

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