Vol. 117

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2021-12-17

Accurate Fault Location for Long-Distance Electric Transmission Lines

By Lihui Zhao, Jingwei Zhu, Hongzhe Yang, and Tianhuai Qiao
Progress In Electromagnetics Research C, Vol. 117, 41-54, 2021
doi:10.2528/PIERC21092906

Abstract

This paper, using the distributed parameter line model, presents an accurate fault location method based on fundamental frequency positive sequence fault components for EHV transmission line. The method based on positive sequence fault components Extra-High Voltage (EHV) electric transmission line. The method based on the positive sequence fault component is robust to the operating state of the prefault system and fault path resistance. The technique proposed in the paper does not require the fault type, fault phase, and the zero-sequence parameter to be obtained in advance. In addition, due to the use of fault component protection theory, the algorithm itself is not a ected by the previous operating state of the system. The method uses a distributed parameter model, which is more accurate in positioning and smaller in error than a lumped parameter model by a large number of simulations. Accurate fault location is important for shortening the fault time and reducing the loss of the fault, so the positioning method proposed can improve the power supply quality and safety. This paper describes the characteristics of the proposed technique and assesses its performance by using Power Systems Computer Aided Design/Electromagnetic Transients including DC (PSCAD/EMTDC).

Citation


Lihui Zhao, Jingwei Zhu, Hongzhe Yang, and Tianhuai Qiao, "Accurate Fault Location for Long-Distance Electric Transmission Lines," Progress In Electromagnetics Research C, Vol. 117, 41-54, 2021.
doi:10.2528/PIERC21092906
http://jpier.org/PIERC/pier.php?paper=21092906

References