Synchrophasor measurement-based fault location technique for multi-terminal multi-section non-homogeneous transmission lines

被引:20
作者
Wu, Ting [1 ]
Chung, Chi-Yung [2 ]
Kamwa, Innocent [3 ]
Li, Jiayong [1 ]
Qin, Mingwen [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
[2] Univ Saskatchewan, Dept Elect & Comp Engn, Saskatoon, SK, Canada
[3] Hydro Quebec IREQ, Power Syst & Math, Varennes, PQ, Canada
关键词
DETECTION/LOCATION TECHNIQUE; ALGORITHM; DISCRIMINATION;
D O I
10.1049/iet-gtd.2015.0927
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 study presents a fault-location technique for multi-terminal multi-section non-homogeneous transmission lines which combine overhead lines with underground power cables, by using voltage and current synchrophasors obtained from phasor measurement units. First, a faulty line branch is selected to narrow down the suspected faulty area. Then, the faulty section and the exact fault location can be identified by calculating the normalised fault distance for each section on the selected faulty branch. Computational burden of the proposed analytical scheme is very low because it avoids iterative computations. Promising simulation results show that the proposed fault location technique can accurately locate the fault regardless of the fault type, fault resistance, fault location, pre-fault loading and line parameters inaccuracies.
引用
收藏
页码:1815 / 1824
页数:10
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