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With the fast development of multi-terminal high-voltage direct-current (HVDC) transmission system, a fast HVDC interruption technique is urgently demanded to break the short circuit current in the multi-terminal HVDC transmission system with a rapid rising rate. In this paper, an interruption scheme for HVDC based on vacuum switch and artificial current zero technique is proposed. The modularized...
Single-pole tripping of circuit breakers at the end of a transmission line for clearing LG fault (single phase to ground fault) produces high negative sequence current in nearby generators. Inserting a capacitor-connected between the ground and neutral of wye winding of a transformer at the end of the transmission line under open phase conditions-causes the net zero sequence reactance, which shunts...
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