A Fault Location Algorithm Based on Circuit Analysis for Untransposed Parallel Transmission Lines

被引：49

作者：

Kang, Sang-Hee ^{[1
,2
]}

Ahn, Yong-Jin ^{[3
]}

Kang, Yong-Cheol ^{[4
,5
]}

Nam, Soon-Ryul ^{[1
,2
]}

机构：

[1] Myongji Univ, Next Generat Power Technol Ctr, Yongin 449728, South Korea

[2] Myongji Univ, Dept Elect Engn, Yongin 449728, South Korea

[3] Youho Elect Ind Co Ltd, Yangjoo 482840, South Korea

[4] Chonbuk Natl Univ, Next Generat Power Technol Ctr, Chonju 561756, South Korea

[5] Chonbuk Natl Univ, Div Elect & Informat Engn, Chonju 561756, South Korea

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2009年 / 24卷 / 04期

关键词：

Fault location; fault resistance; mutual coupling effect; untransposed parallel transmission lnes; PROTECTION;

D O I：

10.1109/TPWRD.2008.2002975

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：

This paper proposes a fault-location algorithm for ultra-high-voltage untransposed parallel transmission lines that only use the voltages and currents at the local end. The proposed algorithm uses the voltage equation for the faulted phase of the faulted line. The equation contains the fault distance, fault resistance, and fault current. To obtain the fault current, Kirchhoff's voltage law is applied on the loops of three phases consisting of the faulted line and the adjacent parallel line. The fault current can be represented in terms of the fault distance. Inserting the fault current into the voltage equation results in an equation that contains only two parameters (i.e., the fault distance and fault resistance). The fault distance is estimated by solving the equation. Test results indicated that the algorithm accurately estimates the fault distance regardless of the fault resistance and mutual coupling effects.

引用

页码：1850 / 1856

页数：7

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