Research of Traveling Wave Fault Location Algorithm for the Overhead Line-cable Hybrid Line

被引：0

作者：

Xing Z. ^{[1
]}

Tian X. ^{[1
]}

Liu Y. ^{[1
]}

Li J. ^{[1
]}

Gao Q. ^{[1
]}

Liu H. ^{[2
]}

机构：

[1] School of Electrical and Electronic Engineering, Shijiazhuang TieDao University, Shijiazhuang, 050043, Hebei Province

[2] Hengshui Power Supply Section of China Railway Beijing Group Co., Ltd., Hengshui, 053000, Hebei Province

来源：

Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 09期

关键词：

Mixed line; Propagation velocity normalization method (PVNM); Railway power network; Time difference; Traveling wave fault location (TWFL);

D O I：

10.13335/j.1000-3673.pst.2018.1979

中图分类号：

学科分类号：

摘要：

According to the parameter characteristics of the mixed line and the refraction and reflection process of the traveling wave (TW) when the wave impedances are discontinuous, firstly, a new method for traveling wave fault location (TWFL) of mixed line based on time difference method is proposed. The fault that occurred in any segment can be calculated, simply using the absolute time difference and no need to identify the second traveling wave head. Then the traditional propagation velocity normalization method (PVNM) is extended to the mixed line with many overhead line sections and underground cable sections. And the essential characteristic of the PVNM is proved theoretically, that is, using time difference to calculate fault distance.But both of them belong to the category of mixed line two terminal traveling wave fault location method. Finally, to verify the accuracy of the proposed algorithm, the mixed line model of railway power network is established by PSCAD, which is the electromagnetic transient simulation software of power system. © 2020, Power System Technology Press. All right reserved.

引用

页码：3540 / 3546

页数：6

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