Internal Pole-to-pole Short-circuit Fault Location of Bipolar HVDC Grid Using Sudden-change Current Information

被引：0

作者：

Lü Y. ^{[1
]}

Zhu S. ^{[1
]}

Wang N. ^{[2
]}

Wang J. ^{[2
]}

Zhao C. ^{[1
]}

Xu J. ^{[1
]}

Tang H. ^{[2
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Changping District, Beijing

[2] NR Electric Co., Ltd., Nanjing, 211102, Jiangsu Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 16期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Fault location; Fault resistance; Multi-terminal HVDC grid; Position coefficient; Zone judgment criterion coefficient;

D O I：

10.13334/j.0258-8013.pcsee.180730

中图分类号：

学科分类号：

摘要：

The fast and reliable DC fault location of multi-terminal HVDC grid is a key issue for the continuous operation. This paper proposed a fault location method for internal pole-to-pole short-circuit fault based on the sudden-change current information. It used the defined location coefficient to indicate the fault location in the DC line, i.e. the ratio of the DC line in the protection area over the entire transmission line. In order to avoid the misjudgment of the fault distance at the port of line protection area resulting from the short-circuit fault, the paper defined another zone judgment criterion coefficient K which was only activated according to the voltage gradient value in case of the fault occurs. The simulation of four-terminal bipolar MMC-HVDC grid on PSCAD/EMTDC had shown the effectiveness of the proposed approaches. The paper shows that the new location method is fast and accurate and is not affected by the real power transmission and the imposed fault resistance. © 2019 Chin. Soc. for Elec. Eng.

引用

页码：4686 / 4694

页数：8

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