MODELING MOV-PROTECTED SERIES CAPACITORS FOR SHORT-CIRCUIT STUDIES

被引:26
作者
COURSOL, M
NGUYEN, CT
LORD, R
DO, XD
机构
[1] HYDRO QUEBEC,MONTREAL,QUEBEC,CANADA
[2] ECOLE POLYTECH,DEPT ELECT ENGN,MONTREAL H3C 3A7,QUEBEC,CANADA
关键词
SERIES COMPENSATION; MOV-PROTECTED SERIES CAPACITORS; SIMULATION OF NONLINEAR ELEMENTS; COMPENSATION TECHNIQUE; BALANCED AND UNBALANCED FAULTS; SHORT-CIRCUIT PROGRAM;
D O I
10.1109/61.180367
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 procedure to adequately model series capacitors protected by metal oxide varistor (MOV) in a conventional short-circuit program. The procedure uses a quasi-linear model to represent the non-linear characteristic of the MOVs combined with a compensation technique to represent the intersequence coupling during unbalanced faults. The effectiveness of the proposed method, which is valid for unbalanced faults as well as balanced faults, is demonstrated by comparing the results obtained with this technique against those obtained using time-domain simulations (EMTP). The results show that the proposed procedure can adequately and efficiently model MOV-protected series capacitors in a standard short-circuit program, thus improving on a flexible and familiar engineering tool.
引用
收藏
页码:448 / 453
页数:6
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