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An Accurate Fault Location Algorithm for Meshed Power Networks Utilizing Hybrid Sparse Voltage and Current Measurements

This paper proposes an accurate fault location algorithm technique based on hybrid synchronized sparse voltage and sparse current phasor measurements. The proposed algorithm addresses the performance limitation of fault location algorithms based on only synchronized sparse voltage measurements (SSVM) and on only synchronized sparse current measurements (SSCM). In the proposed method, bus voltage phasor of faulty line or close to the faulty line and branch current phasor of the adjacent line is utilized. The paper contributes to improve the accuracy of fault location and deter the effect of CT saturation by using hybrid voltage and current measurements. The proposed algorithm has been tested on four bus two area power system and IEEE 14 bus system with the typical features of an actual distribution system. The robustness of algorithm has been tested by variation in fault location, fault resistance, load switching. The simulation results demonstrate the accuracy of the proposed algorithm and ensure a reliable fault detection and location method.

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