CT Saturation Detection Based on the Distance Between Consecutive Points in the Plans Formed by the Secondary Current Samples and Their Difference-Functions

被引：23

作者：

dos Santos, E. M. ^{[1
]}

Cardoso, G., Jr. ^{[2
]}

Farias, P. E. ^{[3
]}

de Morais, A. P. ^{[4
]}

机构：

[1] Fed Univ Pampa UNIPAMPA, Ctr Technol, Alegrete Dept, BR-97546550 Algrete, Brazil

[2] Fed Univ Santa Maria UFSM, Electromech & Power Syst Dept, BR-97105900 Santa Maria, RS, Brazil

[3] Elect Energy Proc Dept, BR-97105900 Santa Maria, RS, Brazil

[4] Ind Tech Sch Santa Maria CTISM, Electrotech Dept, BR-97105900 Santa Maria, RS, Brazil

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2013年 / 28卷 / 01期

关键词：

Current transformer (CT); detection; protection; relays; saturation; COMPENSATION; TRANSIENT;

D O I：

10.1109/TPWRD.2012.2220382

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 proposes a novel method to detect the saturation intervals where the secondary current of current transformers for protection purposes becomes distorted. The method is based on the analysis of plans formed by the secondary current samples and their difference-functions (del[n]). The distance between consecutive points in these plans has a significant increase when saturation occurs, bucking the trend of the intervals without saturation. Two plans are considered: del[2] versus del[1] and del[3] versus del[2]. Besides the ease of implementation, the results indicate the effectiveness of the method to detect saturation intervals.

引用

页码：29 / 37

页数：9

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