双馈风力发电系统3次功率脉动的研究

Study on the Third Harmonic Power Pulsation in Doubly-Fed Wind Power Generation System

为研究风剪、塔影效应引起的转矩3次脉动对风力发电系统的影响,设计了包含风剪、塔影效应的风机动态模拟器,提出了转矩指令动态补偿的转矩模拟方案,并建立了整个双馈风力发电系统对拖模拟平台。依据等效风速原理,对风机的风剪、塔影效应进行了定量分析与模拟,详细研究了由于风剪、塔影效应引起的3次转矩脉动量对双馈风力发电系统的影响。仿真结果验证了文中理论分析的正确性和有效性。

To explore the influences of third harmonic pulsating torque caused by wind shear effect and tower shadow effect on wind power generation system, a dynamic wind turbine simulator in which both wind shear effect and tower shadow effect can be simulated is designed; a torque simulation scheme in which the torque of wind turbine can be dynamically compensated according to the calculated torque instruction is proposed and a simulation platform for overall doubly-fed wind power generation system is built. According to equivalent wind speed principle, the quantitative analysis and simulation of wind shear effect and tower shadow effect acting on wind turbine are performed, meanwhile, the affects of third harmonic caused by wind shear effect and tower shadow effect on doubly-fed wind power generation system are researched in detail. Simulation results show that the theoretical analysis in this paper is correct and effective.