Abstract：The external Volt-Ampere characteristics of the rectifier and inverter station of the voltage sourced converter high voltage direct current (VSC-HVDC) system is simplified.The DC network equivalent circuit and the small signal model of the VSC-HVDC system are proposed respectively.The transmission capacity is calculated under small-signal stability constraints and three influence factors,i.e.DC voltage,DC-side capacitance,and line parameters,are also obtained.In addition,to equaviently increase the line resistance,a feed-forward control is introduced in the rectifier in order to further enhance the transmission capacity.Simulation is conducted with the PSCAD/EMTDC software.The simulation results demonstrate that the transmission capacity of the VSC-HVDC system supplying a passive network is remarkablely affected by the DC voltage,the DC-side capacitance,and the resistance and reactance of the DC transmission lines;and the feed-forward control introduced in the rectifier station can greatly enhance the transmission capacity of the system.
唐欣，张凯峰，许强，陈胜，谭威. 提高VSC-HVDC系统供电无源网络的传输容量的控制方法[J]. 电工技术学报, 2016, 31(5): 44-51.
Tang Xin,Zhang Kaifeng,Xu Qiang,Chen Sheng,Tan Wei. Control Strategy for Enlarging the Transmission Capacity of VSC-HVDC Systems Supplying Passive Networks. Transactions of China Electrotechnical Society, 2016, 31(5): 44-51.
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2016, Vol. 31 
