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- W4386435002 abstract "An accurate faulty phase detection (FPD) method in the case of a single-phase grounding fault (SGF) is the foundation for the reliable operation of an active-intervention-type arc-extinguishing device (AAD). Due to asymmetric system parameters, the applicability of traditional FPD methods exists several difficulties under high-resistance and arc grounding faults. In this paper, an adaptive FPD method is proposed based on wavelet packet reconstruction energy (WPRE) of three-phase voltage signals in resonant grounded distribution systems. Firstly, the fault characteristics of three-phase voltages are analyzed by constructing equivalent circuits with simplified parameters under single-phase low-resistance, high-resistance underdamped, and high-resistance overdamped grounding faults. Secondly, the threshold value of ∫|Δu0|dt is utilized to identify low-resistance faults. Meanwhile, the high-resistance faults are distinguished from switching events by calculating the wavelet packet reconstruction energy entropy (WPREE) of Δu0. Thirdly, the WPRE of three-phase voltage signals is compared to detect the faulty phase. Besides, the time windows of the algorithm are adaptively adjusted under different faults. Furthermore, simulation results show that the proposed FPD method can be implemented speedily and sensitively in asymmetric systems and various fault conditions considering noise interference." @default.
- W4386435002 created "2023-09-05" @default.
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- W4386435002 date "2023-12-01" @default.
- W4386435002 modified "2023-10-16" @default.
- W4386435002 title "An adaptive faulty phase detection method based on wavelet packet reconstruction energy of three-phase voltage signals in resonant grounded distribution systems" @default.
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- W4386435002 doi "https://doi.org/10.1016/j.epsr.2023.109774" @default.
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