Fast ferroresonance suppression of coupling capacitor voltage transformers

被引：36
|
作者：
Graovac, M [1 ]
Iravani, R
Wang, XL
McTaggart, RD
机构：
[1] Univ Toronto, CAPE, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
[2] Trench Grp, Instrument Transformer Div, Scarborough, ON M1P 3B5, Canada
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2003年 / 18卷 / 01期
关键词：
CCVT; CVT; electromagnetic transients; EMTP; ferroresonance;
D O I：
10.1109/TPWRD.2002.803837
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 describes a procedure for fast suppression of the phenomenon of ferroresosnance in coupling capacitor voltage transformers (CCVT) without major change in the CCVT design. It will be shown that it is possible to adjust parameters of the secondary overvoltage protection and the filter circuit so that the ferroresonance can be cleared in a very short time interval. The study cases reported in this paper show that ferroresonance is effectively cleared within two cycles. An implementation of metal oxide varistors (MOV) as part of passive ferroresonance protection is also addressed. The Electromagnetic Transients Program (EMTP) is used for modeling transients and fine-tuning the ferroresonance suppressing circuit. The studies are conducted on the Trench TEHMP161A CCVT.
引用
收藏
页码：158 / 163
页数：6
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