Optimizing Modal Traveling-Wave-Based Fault Location in Electrical Power Systems

Yang  Lei; Fan  Yang; Jinrui  Tang; Bo  Ma; Guoqing  Zhang; Yongjiang  Han; Yu  Shen; Zhichun  Yang

doi:10.6180/jase.202503_28(3).0008

Optimizing Modal Traveling-Wave-Based Fault Location in Electrical Power Systems

Yang Lei¹, Fan Yang¹, Jinrui Tang²This email address is being protected from spambots. You need JavaScript enabled to view it., Bo Ma², Guoqing Zhang³, Yongjiang Han³, Yu Shen¹, and Zhichun Yang¹

¹State Grid Hubei Electric Power Research Institute, 227 Xudong Road, 430077, Wuhan, China

²School of Automation, Wuhan University of Technology, 122 Luoshi Road, 430077, Wuhan, China

³Zhilian Xinneng Electric Power Technology Company, 6 Kejiyuan Road, 430223, Wuhan, China

Received: December 5, 2023
Accepted: March 14, 2024
Publication Date: May 9, 2024

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202503_28(3).0008

In power transmission networks, traditional double-ended traveling-wave-based fault-location methods have been widely utilized, demonstrating position errors of less than five hundred meters. However, when these traditional methods are directly applied to electrical distribution systems, the complex structures and parameters of distribution feeders necessitate the installation of numerous sensors to capture traveling waves. To minimize the total number of sensors required, it is advisable to employ both aerial-mode and zero-mode traveling waves for fault location, instead of relying solely on aerial-mode waves. In this paper, the distributed parameter-based line model is constructed and Karenbuaer transformation is used to achieve the mathematical model of modal traveling wave propagation speed, which is associated with various frequencies. And then the propagation speeds of zero-mode and aerial-mode fault-generated traveling waves are analyzed and compared with each other under overhead lines and underground cables in electrical distribution systems. Furthermore, the propagation speed is examined in main feeders and laterals with varying line radiuses and heights. The results indicate that zero-mode traveling waves can be utilized for fault location, but how to extract the real propagation speed under different fault distances would be the key factors to realize accurate modal traveling-wave-based fault location.

Keywords: Electrical distribution systems, fault location, traveling wave, propagation speed, line parameters.

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