4WANG Wenyuan, BAMES M. Power flow algorithms for multi- terminal VSC-HVDC with droop eontrol[J], IEEE Trans on Power Systems, 2014, 29(4) : 1721 -1730.
5OOI B T, WANG X. Voltage angle lock loop control of the boost type PWM converter for HVDC application [J ]. IEEETrans on Power Electronics, 1990, 5(2): 229-235.
6OOI B T, WANG X. Boost type PWM HVDC transmission system[J]. IEEE Trans on Power Delivery, 1991, 6(4): 1557 -1563.
7LU W X, OOI B T. Multiterminal LVDC system for optimal acquisition of power in wind-farm using induction generators[J]. IEEE Trans on Power Electronics, 2002, 17(4): 558-563.
8BOULANGER A G, CHU A C, MAXX S, et al. Vehicle electrification: status and issues[J]. Proceedings of the IEEE, 2011, 99(6): 1116-1138.
9LI Rui, XU Lie, HOLLIDAY D, et al. Continuous operation of radial multiterminal HVDC systems under DC fault[J]. IEEE Trans on Power Delivery, 2016, 31(1) : 351-360.
10ACKERMANN T, ANDERSSON G, SODER L. Distributed generation: a definition[J]. Electric Power Systems Research, 2001, 57(3) : 195-204.