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Analysis on HVDC voltage abnormal fluctuation of Niuzhai-Conghua DC transmission system
In view of the abnormal fluctuation phenomenon of the DC line voltage of the DC power transmission system, the reasons for the abnormal voltage fluctuations are analyzed in this paper based on DC voltage control strategy, fault waveform diagram, DC voltage theoretical value calculation, and AC-DC power comparison. The effects of overhaul and abnormal fluctuation of voltage on the stable operation of HVDC transmission system are introduced.