A design of inrush current identification system for high-speed train's traction transformer

被引：0

作者：

Yu, Weikai ^{[1
]}

Liu, Xiankai ^{[1
]}

Zhang, Yuzhuo ^{[2
]}

Cao, Yuan ^{[2
]}

Ma, Weigang ^{[3
]}

Rei, Xinhong ^{[3
]}

Huang, Zhenhui ^{[4
]}

Jiang, Dawang ^{[4
]}

机构：

[1] CSR Qingdao Sifang Co Ltd, Natl Engn Res Ctr High Speed EMU, Qingdao, Peoples R China

[2] Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing, Peoples R China

[3] Xian Univ Technol, Sch Comp Sci & Engn, Xian, Peoples R China

[4] CNR Tangshan Railway Vehicle Co Ltd, Project Management Dept, Tangshan, Peoples R China

来源：

2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) | 2014年

关键词：

inrush current; short circuit current; identification system; virtual instrument;

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：

Distinguishing inrush current and short circuit current is a key issue for the longitudinal differential protection of high-speed train's traction transformer. This paper introduced virtual instrument technology to build an inrush current identification system, which utilized software to realize the identification algorithm and applied digital signal processing approach to the differential protection of the transformer. It developed the system software in virtual instrument tool LabWindows/CVI. The algorithm regards the inrush current and short circuit current as random signals, calculates the self-correlation functions of sampling data, then compares them with standard sine self-correlation coefficient vector table, and finally uses the magnitude of similarity coefficient to distinguish inrush current and short circuit current. Theoretical analysis and experiment result have proved that the system has high accuracy, fast decision rate and good expansibility.

引用

页码：647 / 650

页数：4

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