Least Square Method For Impedance Based Fault Location In Ungrounded Networks

Namas, Tarik; Džafić, Izudin

doi:10.1109/gpecom49333.2020.9247886

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…A new fault locator was developed using the single-end measurements of voltage and current to determine the fault location (Takagi et al 1982). The least-square method was applied in the method based on impedance to locate a fault in ungrounded networks (Namas and Džafić 2020). In Ref.…”

Section: Presentationmentioning

confidence: 99%

“…The signal processing methods depending on the selected fault location method are applied to obtain data, extract the significant features, and determine the fault location. In this stage, several signal processing methods, consisting of the modal analysis and the wavelet transform, are used for the travelling wave-based method (Mosavi et al 2016;Reis et al 2021;Sawai et al 2020;Fedorov et al 2020), and the time domain and the frequency domain methods are applied to the impedance-based method (Han et al 2020;Takagi et al 1982;Namas and Džafić 2020;Barati and Doroudi 2018;Khoa and Tung 2018). The outputs of the signal process are considered as the inputs of the executed analytics to calculate the fault distance.…”

Section: Introductionmentioning

confidence: 99%

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Methods for Fault Location in High Voltage Power Transmission Lines: A Comparative Analysis

Truong

2022

Int. J. Renew. Energy Dev.

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Power transmission system stability can be significantly affected due to faults. The fault location accuracy in the transmission lines can make many benefits such as acceleration of the line restoration, reduction in cost, breakdown time, maintenance, and time searching. The methods based on the impedance, including the simple reactance, Takagi, modified Takagi, and double-end, are very much appreciated for locating the fault in transmission lines and especially by estimating the fault distance. This study proposes a comparative case study between these methods. The theoretical basis and the analysis, calculation, and estimation of each method are specifically re-established. To observe the performance of each method, a practical 220kV Quy Nhon - Tuy Hoa transmission line in Vietnam is used to simulate, calculate, evaluate, and compare under the various fault types and resistances. The power system is modeled and simulated in the MATLAB/Simulink software via the time domain. The voltage and current measurements at two ends of the line are used to determine the fault location on the Quy Nhon - Tuy Hoa transmission line. The simulation results show clearly the effectiveness of each fault location method.

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Section: Presentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methods for Fault Location in High Voltage Power Transmission Lines: A Comparative Analysis

Truong

2022

Int. J. Renew. Energy Dev.

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“…Ref. [13] proposed the least-square method based on im-pedance to locate a fault in the ungrounded grids. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Real-time Fault Location Experimental System for Teaching and Training University Students

Khoa

Tung

2023

Int. j. electr. comput. eng. syst. (Online)

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The fault location problem is one of the most important issues in power system operation and control. To obtain an experimental system for teaching and training electrical engineering students, this paper performed a study to design and implement a real-time fault location laboratory-scale model from practical hardware components. The impedance-based fault location method is embedded in the system to determine the distance to fault in the transmission line. Furthermore, the monitoring and controlling program is designed by the Matlab App Designer – A new professional app to create the graphical user interface and use the integrated editor quickly. Several fault types including three-phase fault, phase-to-phase fault, phase-to-ground fault are created to evaluate the performance of the fault location experimental system. The real-time measurement results which are acquired and observed on the user guide interface of the program confirm the effectiveness of the experimental system; therefore, the system can be considered a powerful tool for electrical engineering students.

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