Accurate fault location of hybrid lines in distribution networks

Tian, Shulin; Yang, Qixiang; Xu, Yong; Zhang, Tengfei

doi:10.1002/2050-7038.13158

Cited by 2 publications

(2 citation statements)

References 39 publications

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“…The impedance method has the advantages of economy and simplicity in fault location of underground cables and overhead transmission lines [7], but its positioning results are greatly influenced by factors such as system operation, line impedance, and load current. The traveling wave method has better application value compared to the impedance method [8,9], which can be divided into single ended method [10] and double ended method [11,12]. The key step is to accurately detect the traveling wave head [13,14].…”

Section: Introductionmentioning

confidence: 99%

A fault location method for hybrid transmission lines based on empirical Fourier decomposition

2024

Archives of Electrical Engineering

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This paper aims to address the problems of inaccurate location and large computation in hybrid transmission line traveling wave detection methods. In this paper, a new fault location method based on empirical Fourier decomposition (EFD) and the Teager energy operator (TEO) is proposed. Firstly, the combination of EFD and the TEO is used to detect the time difference between the arrival of the initial traveling wave of the fault at the two measurement ends of the hybrid line. Then, when the fault occurs at the midpoint of each line segment and at the connection point of the hybrid line, the time difference between the arrival of the fault traveling wave at the two measurement ends of the line is calculated according to the line parameters. By comparing the obtained time differences, it is determined whether the fault occurs in the first or second half of the line. Finally, the fault distance is calculated using the double-ended traveling wave method according to the fault section. The model was built on PSCAD and the proposed algorithm was simulated on MATLAB platform. The results demonstrate that the proposed method achieves an average fault location accuracy of 98.88% by adjusting transition resistances and fault distances and comparing with other location methods. After validation, the proposed method for locating faults has a high level of accuracy in location, computational efficiency, and reliability. It can accurately identify fault segments and locations in hybrid transmission line systems.

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Section: Introductionmentioning

confidence: 99%

A fault location method for hybrid transmission lines based on empirical Fourier decomposition

2024

Archives of Electrical Engineering

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“…Therefore, whether lightning interference can be correctly identified is one of the key problems that must be solved in the practical application of traveling wave protection and transient protection. Establishing a convenient, practical, fast and accurate lightning monitoring and early warning system in areas with frequent lightning activities can not only predict lightning accidents before they occur, but also provide auxiliary decision-making for the power industry to formulate distribution lines for reference, which is of great significance to effectively reduce the harm of lightning accidents in DMSs 5 .…”

Section: Introductionmentioning

confidence: 99%

Design of lightning monitoring and fault identification algorithm for overhead distribution lines based on Internet of Things

Li,

He,

Xiao

et al. 2023

Seventh International Conference on Mechatronics and Intelligent Robotics (ICMIR 2023)

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As an important part of the (DMS), the operation state of distribution lines is related to the operation safety of the DMS. Lightning is a natural transient weather phenomenon with high voltage, high current and strong electromagnetic radiation in nature, and it is also one of the more common natural disasters, which has become the primary factor of distribution line tripping. In this article, an algorithm for lightning monitoring and fault identification of overhead distribution lines based on the Internet of Things (IOT) is proposed. According to the distribution characteristics of wavelet energy spectrum under different lightning strikes, the response characteristics and fault identification criteria are constructed. The simulation results verify the real-time and reliability of the online monitoring data transmission of the lightning monitoring system for overhead distribution lines. The method in this article can avoid the influence of lightning impact corona and reflected wave at the end of the line on the accuracy of the algorithm by reasonably selecting the judgment threshold and the monitoring point of current traveling wave, which has high practical value. Through the statistical analysis of various monitoring data of the system, the operation and management department of distribution line can grasp the changes of key operation state of the line in time and lay a solid foundation for the condition maintenance of distribution line.

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Accurate fault location of hybrid lines in distribution networks

Cited by 2 publications

References 39 publications

A fault location method for hybrid transmission lines based on empirical Fourier decomposition

A fault location method for hybrid transmission lines based on empirical Fourier decomposition

Design of lightning monitoring and fault identification algorithm for overhead distribution lines based on Internet of Things

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