Research on the Fault-induced Inrush Current of the Converter Transformer and Its Impacts

被引：0
|
作者：
Zheng, Tao [1 ]
Guo, Xingchao [1 ]
Hu, Xin [1 ]
Wang, Xiaoli [2 ]
机构：
[1] North China Elect Power Univ, Sch Elect & Elect Engn, Beijing, Peoples R China
[2] State Grid Ningxia Elect Power Co Ltd, Yinchuan, Peoples R China
来源：
2018 2ND IEEE CONFERENCE ON ENERGY INTERNET AND ENERGY SYSTEM INTEGRATION (EI2) | 2018年
关键词：
converter transformer; fault-induced inrush current; differential current; 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：
This paper analyzes the mechanism and variation of a new inrush phenomenon (which is defined as fault-induced inrush current) caused by the unidirectional continuity of the converter valve when the asymmetric fault occurs on the valve side of the UHV converter transformer. Taking a converter transformer in UHVDC transmission system as an example, the influence of fault-induced inrush current on the operation characteristics of the differential protection is analyzed. The results show that the fault-induced inrush current is easy to cause miss-operation of converter transformer differential protection in the event of transferring fault on valve side.
引用
收藏
页数：6
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