Electromagnetic modeling of a high voltage current transformer

被引：3

作者：

Collett, Walter ^{[1
]}

Mahajan, Satish ^{[2
]}

机构：

[1] Western Kentucky Univ, Dept Engn, Bowling Green, KY 42101 USA

[2] Tennessee Technol Univ, Dept Elect & Comp Engn, Cookeville, TN 38505 USA

来源：

2007 39TH NORTH AMERICAN POWER SYMPOSIUM, VOLS 1 AND 2 | 2007年

关键词：

electrical equipment enclosures; finite element methods; magnetic cores; transformers;

D O I：

10.1109/NAPS.2007.4402290

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：

An electromagnetic modeling procedure for a high voltage current transformer is presented. The procedure can be used to estimate all major components of power loss, including loss in the core, windings, and steel tank enclosure. Provision is also made for incorporating the effects of electrical contact resistance. Finite element analysis is used to estimate core and enclosure losses, while winding losses are obtained through simple closed form calculations. Under certain circumstances, the model shows that loss in the enclosure can be greater than that of the transformer core or windings. Discussion of how the model might be used in a thermal analysis to help predict the capability of the current transformer to sustain operation greater than rated capacity will be presented.

引用

页码：80 / +

页数：2

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