Current transformer dimensioning for numerical protection relays

被引：26
|
作者：
Gangadharan, Pradeep Kumar [1 ]
Sidhu, Tarlochan S. [1 ]
Finlayson, Gregory James [1 ]
机构：
[1] Univ Western Ontario, London, ON N6A 5B9, Canada
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2007年 / 22卷 / 01期
关键词：
current transformer (CT); CT saturation; discrete Fourier transform (DFT); knee point voltage; numerical relays; phasor estimation; remanent flux; steady-state error; transient error;
D O I：
10.1109/TPWRD.2006.881601
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：
In this paper, a study conducted to analyze the factors influencing the current transformer (CT) dimensioning for numerical relays is presented. The study identifies the factors contributing to the CT dimensioning. It analyzes the influence of system parameters on the dimensioning factor and also identifies the critical applications and conditions that determine the CT dimensioning. The errors introduced in phasor estimation of saturated current signals are also described in this study.
引用
收藏
页码：108 / 115
页数：8
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