Heating effects of short-circuit current impulses on contacts and conductors -: Part I

被引：7

作者：

Koller, Laszlo ^{[1
]}

Novak, Balazs ^{[1
]}

Tevan, Gyoergy ^{[1
]}

机构：

[1] Budapest Univ Technol & Econ, Dept Elect Power Engn, H-1111 Budapest, Hungary

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2008年 / 23卷 / 01期

关键词：

conductors; contacts; current distribution; short-circuit currents;

D O I：

10.1109/TPWRD.2007.905806

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：

An analytical description combined with finite-element calculations of the current displacement caused by short-circuit current impulses in I-D and 2-D conductor models is presented. It is shown that in many cases, the Joule integral used in the technical practice gives a false representation of the thermal stress in the conductors and contacts. A simplified method is given for determining the degree of current displacement caused by different current impulses, hence, the nonuniformity of the losses and the heating within the conductors.

引用

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页码：221 / 227

页数：7

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