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Energies 2018, 11(6), 1529;

Novel Method for Identifying Fault Location of Mixed Lines

School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam
Office of Science Research and Development, Lac Hong University, Bien Hoa 810000, Vietnam
Author to whom correspondence should be addressed.
Received: 15 May 2018 / Revised: 7 June 2018 / Accepted: 10 June 2018 / Published: 12 June 2018
(This article belongs to the Section Electrical Power and Energy System)
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The identification and localization of a fault are a basic requirement for optimal operation of a modern power system. An effective fault identification method significantly reduces outage time, improves the electrical supply reliability, and enhances the speed of protection control. This paper proposes a novel method based on the theory of the two-terminal traveling wave range to identify the fault location in a voltage source converter based high voltage direct current (VSC-HVDC) system containing mixed cable and overhead line segments. It uses variational mode decomposition (VMD) and the Teager energy operator (TEO) as a new method to detect the traveling wave fault through a fault signal. The effectiveness of the proposed method is verified via time domain simulation of the hybrid VSC-HVDC transmission system using PSCAD/EMTDC and MATLAB software. Simulation results show that the proposed method demonstrates high fault location accuracy and excellent robustness with a slight effect on transient resistance and fault types, and that it performs better than the existing transient detection techniques, such as wavelet transform and ensemble empirical mode decomposition. View Full-Text
Keywords: traveling wave method; fault location; variational mode decomposition (VMD); Teager energy operator (TEO); VSC-HVDC system; PSCAD/EMTDC; MATLAB traveling wave method; fault location; variational mode decomposition (VMD); Teager energy operator (TEO); VSC-HVDC system; PSCAD/EMTDC; MATLAB

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Wang, L.; Liu, H.; Dai, L.V.; Liu, Y. Novel Method for Identifying Fault Location of Mixed Lines. Energies 2018, 11, 1529.

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