A Practical Approach to Mitigate Low-Frequency Oscillation in Railway Electrification Systems

被引：22

作者：

Hu, Haitao ^{[1
]}

Zhou, Yi ^{[1
]}

Yang, Jie ^{[1
]}

He, Zhengyou ^{[1
]}

Gao, Shibin ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610031, Sichuan, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2018年 / 33卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Diode-bridge rectification (DBR); low-frequency oscillation; railway electrification systems (RES); PRONY;

D O I：

10.1109/TPEL.2018.2803176

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：

The low-frequency oscillation (LFO) phenomenon has frequently happened in the railway electrification systems (RES), which often caused the traction atresia of electric trains and protection malfunction of traction network. In this letter, a practical mitigation approach is presented based on impedance analysis, which indicates that changing the operation mode of the electric trains to diode-bridge rectification (DBR) circuit can mitigate the LFO because the impedance of the rectifier is increased. Then, combining the Prony technology, an online identification and mitigation approach, is proposed here for mitigating the LFO phenomenon. Experimental results verify the effectiveness of the proposed method in stabilizing voltage fluctuation of the RES. This method can also identify the oscillatory frequency and the corresponding attenuation factor.

引用

页码：8198 / 8203

页数：6

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