Sizing Current Transformers for Line Protection Applications

被引：0

作者：

Altuve, Hector J. ^{[1
]}

Fischer, Normann ^{[1
]}

Benmouyal, Gabriel ^{[1
]}

Finney, Dale ^{[1
]}

机构：

[1] Schweitzer Engn Labs Inc, King Of Prussia, PA 19406 USA

来源：

2013 66TH ANNUAL CONFERENCE FOR PROTECTIVE RELAY ENGINEERS | 2013年

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：

This paper discusses the factors to consider for sizing current transformers (CTs) for line protection applications. We first cover CT basics, with emphasis on errors and ac and dc saturation. We also discuss the criteria to avoid CT saturation. Then we analyze the effect of CT saturation on overcurrent, distance, directional, and differential elements. Further, we present the advances in protection element design to improve security and speed under CT saturation conditions. Finally, we discuss the tools available to the protection engineer for CT sizing and provide some guidelines.

引用

页码：36 / 51

页数：16

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