A New Fault-Impedance Algorithm for Distance Relaying on a Transmission Line

被引：44

作者：

Xu, Zhen Yu ^{[1
,2
]}

Xu, G. ^{[1
]}

Ran, Li ^{[3
]}

Yu, S. ^{[1
]}

Yang, Q. X. ^{[1
,2
]}

机构：

[1] N China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China

[2] Beijing Sifang Automat Co Ltd, Beijing 100085, Peoples R China

[3] Univ Durham, Sch Engn, Sci Labs, Durham DH1 3LE, England

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2010年 / 25卷 / 03期

关键词：

Distance relaying; fault-impedance measurement; fault path resistance; load current; transmission line; DIGITAL-COMPUTER; COMPENSATION; SYSTEM; PROTECTION;

D O I：

10.1109/TPWRD.2010.2042082

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 describes a new algorithm to calculate the per phase impedance between the measurement and fault points on a transmission line, featuring robustness to the uncertainties in load current and fault path resistance. The algorithm, which is ideal for distance relaying, is derived based on a justifiable assumption of the fault path being purely resistive, implying that the unmeasured fault point voltage and fault path current are in phase with each other. This paper illustrates the characteristics of the proposed algorithm and evaluates its performance by using PSCAD/EMTDC simulation.

引用

页码：1384 / 1392

页数：9

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