电力系统自动化2017，Vol.41Issue(10)：44-50,7.DOI:10.7500/AEPS20160602009
适用于弱电网的双馈风电机组新型故障穿越控制方法
Control Method for Fault Ride-through of DFIG-based Wind Turbines Applied to Weak Grids
摘要
Abstract
The voltage stability margin of the weak grid is usually insufficient.While the fault ride-through (FRT) performance of the wind farm has significant effect on the transient voltage stability of power grid.The traditional FRT control method for doubly-fed induction generator (DFIG) based wind turbine is on the basis of constant power control which is suitable for strong grid.But it is difficult to support transient voltage stability of the weak grid.Therefore, a new FRT control method for DFIG-based wind turbine is proposed which can be applied to weak grids.The proposed control method based on synchronized control makes the wind turbine operate as controllable voltage source via active current and reactive current droop control.It not only enables the DFIG-based wind turbine to provide active and reactive currents, but also enhances the voltage stability during the transient re-exciting process after grid fault clearance.It is applicable for the DFIG-based wind turbine which needs seamless switching between grid connected and isolated networks as well.The effectiveness and advantages of the proposed control method is validated by the simulation cases of DFIG-based wind turbine connected to infinite bus, practical regional and islanded micro-grid.关键词
弱电网/双馈风电机组/故障穿越/定功率控制/同步控制/电压稳定Key words
weak grid/doubly-fed induction generator based wind turbine/fault ride-through (FRT)/constant power control/synchronized control/voltage stability引用本文复制引用
洪敏,章雷其,迟方德,张琳,李晓婷,辛焕海..适用于弱电网的双馈风电机组新型故障穿越控制方法[J].电力系统自动化,2017,41(10):44-50,7.基金项目
国家重点研发计划资助项目(2016YFB0900104).This work is supported by National Key Research and Development Program of China (No.2016YFB0900104). （2016YFB0900104）
