Overvoltages due to switching off an unloaded transformer with a vacuum circuit breaker

被引：27

作者：

Popov, M

Acha, E

机构：

[1] Univ St Cyril & Methudius, Dept Elect Engn, Skopje 91000, Macedonia

[2] Univ Glasgow, Dept Elect Engn & Elect, Glasgow G12 8QQ, Lanark, Scotland

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 1999年 / 14卷 / 04期

关键词：

vacuum circuit breaker; TRV; ATP-EMTP; transformer;

D O I：

10.1109/61.796224

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：

When a vacuum breaker is used to disconnect an unloaded transformer, high overvoltages may result on the secondary side. The phenomena or current chopping and multiple reignitions after contact opening, shortly before current zero, play a significant role in generating these overvoltages. Furthermore, the transient recovery voltage (TRV) is also influenced by virtual current chopping which may lead to fa;st interruptions and reignitions. The paper reports on a vacuum breaker model implemented in the ATP-EMTP program. Simulations have been performed to determine overvoltages generated by the vacuum breaker, before and after suppression. Network elements were simulated by simplified models of limited complexity.

引用

页码：1317 / 1326

页数：10

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