Research on Differential Protection Algorithm about Special Phase-shifting Angle Rectifier Transformer

被引:0
|
作者
Dong, Liang [1 ]
Hao, Zhiguo [1 ]
Liu, Zhiyuan [2 ]
Zou, Hongsen [2 ]
机构
[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China
[2] State Grid Ningxia Elect Co, State Grid Ningxia Elect Maintenance Co, Yinchuan, Peoples R China
来源
2015 IEEE 15TH INTERNATIONAL CONFERENCE ON ENVIRONMENT AND ELECTRICAL ENGINEERING (IEEE EEEIC 2015) | 2015年
关键词
rectifier transformer; special phase-shifting angle; sequence component; current compensation; differential protection;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Electrolysis metallurgical production adopts rectifier transformer of special shifting-phase angles to generate more pulses instead of bridge rectifier. Although power quality improved, traditional differential protection cannot be applied because of current phase angle difference of two sides of transformer. Firstly, simulation model has been built in PSCAD upon special shifting-phase transformer theory. Secondly, a new method of special angle compensation is proposed upon current phase compensation and sequence component theory. This method has wider applicability than traditional one, which can compensate any phase-shifting angle. Finally, differential protection algorithm for special phase-shifting angle is proposed in consideration of zero-sequence current's influence. Through simulation of some cases of circuit fault, sensitivity and reliability of this algorithm in this paper is verified.
引用
收藏
页码:1765 / 1769
页数:5
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