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- W4313149837 abstract "Due to the high cost of laying optical fiber in distribution network, optical fiber differential protection has been unable to be widely used in distribution network. With the rapid development of 5G communication, this problem is expected to be solved, because 5G communication has the characteristics of high reliability and low time delay, which provides a new possibility for differential protection of distribution network. This paper presents a self synchronization scheme based on zero crossing of waveform before fault. The zero crossing point of voltage waveform before fault is found by searching forward from the peak point of fault current, and the zero crossing point is used as synchronization time point at both ends, so as to realize accurate self synchronization of sampling at both ends. When the 5G optical fiber system is used, it can realize accurate synchronization without relying on the dedicated optical fiber system. The measured synchronous accuracy is not more than 22μs, The reliability, rapidity, sensitivity and selectivity of relay protection are greatly improved. This scheme is suitable for the longitudinal differential protection of distribution network lines and other differential protection without accurate timing or interruption. It has a broad market prospect and has great promotion value." @default.
- W4313149837 created "2023-01-06" @default.
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- W4313149837 date "2022-09-07" @default.
- W4313149837 modified "2023-09-27" @default.
- W4313149837 title "Research on Self Synchronization Method of Line Differential Protection Based on 5G Communication" @default.
- W4313149837 doi "https://doi.org/10.1109/ciced56215.2022.9929018" @default.
- W4313149837 hasPublicationYear "2022" @default.
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