Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through
AbstractThe Voltage Source Converter-HVDC (VSC-HVDC) system applied to wind power generation can solve large scale wind farm grid-connection and long distance transmission problems. However, the low voltage ride through (LVRT) of the VSC-HVDC connected wind farm is a key technology issue that must be solved, and it is currently lacking an economic and effective solution. In this paper, a LVRT coordinated control strategy is proposed for the VSC-HVDC-based wind power system. In this strategy, the operation and control of VSC-HVDC and wind farm during the grid fault period is improved. The VSC-HVDC system not only provides reactive power support to the grid, but also effectively maintains the power balance and DC voltage stability by reducing wind-farm power output, without increasing the equipment investment. Correspondingly, to eliminate the influence on permanent magnet synchronous generator (PMSG)-based wind turbine (WT) systems, a hierarchical control strategy is designed. The speed and validity of the proposed LVRT coordinated control strategy and hierarchical control strategy were verified by MATLAB/Simulink simulations. View Full-Text
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Zhang, X.; Wu, Z.; Hu, M.; Li, X.; Lv, G. Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through. Energies 2015, 8, 7224-7242.
Zhang X, Wu Z, Hu M, Li X, Lv G. Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through. Energies. 2015; 8(7):7224-7242.Chicago/Turabian Style
Zhang, Xinyin; Wu, Zaijun; Hu, Minqiang; Li, Xianyun; Lv, Ganyun. 2015. "Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through." Energies 8, no. 7: 7224-7242.