Voltage-current technique to identify fault location within long transmission lines

被引:10
|
作者
Abu-Siada, Ahmed [1 ]
Mosaad, Mohamed I. [2 ]
Mir, Saif [1 ]
机构
[1] Curtin Univ, Perth, WA, Australia
[2] Yanbu Ind Coll YIC, Yanbu, Saudi Arabia
关键词
power transmission faults; fault location; power transmission lines; electric current measurement; voltage measurement; current fault locating techniques; power line voltage-current characteristics; series capacitor compensated lines; long transmission lines; current industry practice; line impedance measurement; power line topology failures; Matlab-Simulink simulation analysis;
D O I
10.1049/iet-gtd.2020.1012
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
Current industry practice to identify fault location in transmission lines is based on visual inspection, travelling waves, and line impedance measurement. Unfortunately, these techniques are only developed to detect the fault location upon its occurrence without the ability to predict abnormal events that usually precede major faults and issue a timely warning signal to avoid potential consequences for power line failures. Furthermore, the current fault locating techniques exhibit some drawbacks that limit their wide practical implementation. This includes cost, access to required data, and low accuracy when employed for specific power line topologies. This study is aimed at presenting and validating a new cost-effective technique based on the line voltage-current characteristics to predict and identify the location of various abnormal and fault events in real-time. By measuring the currents and voltages at both ends of the line, a unique line fingerprint can be identified. Any change in this fingerprint can be detected and analysed by a software installed in the control centre in real-time to identify the location, type, and level of the abnormal events or emerging faults. Robustness of the proposed technique is assessed through simulation analysis conducted on various case studies along with a practical case study.
引用
收藏
页码:5588 / 5596
页数:9
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