Abstract：For doubly-fed induction generator (DFIG)-based large wind farm, this paper proposes a new HVDC (High-Voltage DC) transmission topology along with its modeling and control methods. In the proposed topology, the sending end is a line-commutated converter(LCC) with a static synchronous compensator (STATCOM), which serves to provide stator voltage support for DFIGs, as well as commutation voltage for the LCC. The receiving end is a current source inverter(CSI) using forced-commutated devices so as to give independent reactive power support to the grid. The mathematical model of the overall system is presented and corresponding control strategies are proposed. Simulation results show that the proposed system not only possesses the black-start capability and has fast active power response, but also provides independent reactive power support to the grid if necessary.
周宏林, 杨耕, 耿华. 远距离大型DFIG风电场的混合型HVDC建模及控制[J]. 电工技术学报, 2010, 25(12): 124-131.
Zhou Honglin, Yang Geng, Geng Hua. Modeling and Control for DFIG-based Wind Farm With Hybrid HVDC Connection. Transactions of China Electrotechnical Society, 2010, 25(12): 124-131.
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