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• W4387073123 abstract "The pole-to-ground fault is the most frequently occurring fault in the DC distribution network. To solve the problem of poor fault location accuracy caused by the inconspicuous characteristics of pole-to-ground fault in DC distribution network, this paper presents a pole-to-ground fault location method for DC distribution network based on high-frequency zero-mode current sparsity. Firstly, the characteristics of pole-to-ground fault are analyzed, the influence of electrical coupling is eliminated by the phase-mode decoupling method, the equivalent circuit of the zero-mode network for pole-to-ground fault in the DC distribution network is established, and the sparse characteristics of high-frequency zero-mode current are demonstrated through analysis. Secondly, the equation of node high-frequency zero-mode voltage is constructed, and the sparse vector of high-frequency zero-mode current is obtained by solving the high-frequency zero-mode voltage equation using compressed sensing reconstruction to achieve fault line location. Finally, by analyzing the equivalent circuit of the fault line, a fault distance algorithm is proposed based on the amplitude of reconstructed high-frequency zero-mode current to achieve accurate fault point location. The simulation experiments of DC distribution network show that the proposed method can accurately locate fault point with low requirement for the number of measurement points and has a certain ability to tolerance transitional resistance and noise interference." @default.
• W4387073123 created "2023-09-27" @default.
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• W4387073123 date "2023-12-01" @default.
• W4387073123 modified "2023-10-14" @default.
• W4387073123 title "A pole-to-ground fault location method for DC distribution network based on high-frequency zero-mode current sparsity" @default.
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• W4387073123 doi "https://doi.org/10.1016/j.epsr.2023.109864" @default.
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