YAN Xiao-xia.An algorithm for power flow in multiterminal AC/DC transmission system[J].Journal of Electric Power, 1997,12 (2): 32 - 35,70.是什么意思_YAN Xiao-xia.An algorithm for power flow in multiterminal AC/DC transmission system[J].Journal of Electric Power, 1997,12 (2): 32