海上风电场并网控制系统建模与仿真

Modeling and Simulation of Grid-connected Control System for Offshore Wind Farms

针对海上风电场容量大、距离远的特点,提出了基于电压源换流器(VSC)高压直流输电(HVDC)的海上风电场并网方案,分析了双端口VSC-HVDC的基本运行原理和VSC的数学模型,建立了连接风电机组侧VSC的功率控制器和连接并网侧VSC的电压控制器。为验证方案的可行性,在MATLAB/Simulink中建立了双端口VSC-HVDC的海上风电场并网模型,并模拟实际运行情况进行了仿真验证。仿真结果表明,提出的并网方案以及设计的控制系统能够实现海上风电机组的并网和稳定运行。

Considering the feature of large capacity and long distance of offshore wind farm,a offshore wind farm connected to power grid via power transmission with VSC-HVDC system is proposed.Basic operating principles of the dual-port VSC-HVDC are analyzed.The math model of VSC is established and the control system for grid-connection is designed.To verify the feasibility of the proposed scheme,a model with dual-port VSC-HVDC system for grid-connection of offshore farm is built with MATLAB/Simulink and the actual operation is simulated.The simulation results show that the proposed scheme of grid-connection of offshore wind farm with VSC-HVDC can implement stable operation of wind turbine sets.