电力系统保护与控制2016，Vol.44Issue(9)：69-74,6.DOI:10.7667/PSPC151050
提升直驱型永磁风电机组故障穿越能力的改进控制策略研究
A coordinated control strategy for fault ride-though capacity of direct-drive permanent magnet wind power generating units
摘要
Abstract
To improve the direct-drive permanent magnet wind turbine fault ride-through capability,a new coordinated control strategy for enhancing the fault ride-thought (FRT) is proposed,which adopts emergency pitch technology to reduce wind turbines’output during fault, and to reduce the active power deviation of the DC-link.A novelDC-link parallel capacitors control strategy is adopted to provide means for power evacuation during grid fault conditions,and thenlimit the fault during the DC bus voltage swell further. In order to make the reactive power control capability of PMSG,the grid-side converters are utilized to provide reactive power for the grid prior to operating the voltage control mode. A detailed FRT control strategy is given, and a simulation model is established by DIgSILENT. The results verify that thecoordinated control scheme not only limits the DC bus overvoltage, but also provides certaindynamic reactive power supporting to the grid, which has a fine effect for the wind farm achievingthe low/high-voltage ride through capability during grid fault.关键词
永磁风电机组/故障穿越/紧急变桨/直流母线/变流器Key words
permanent-magnet synchronous generator (PMSG)/fault ride-through/emergency pitch regulation/DC-link/converter引用本文复制引用
边晓燕,田春笋,符杨..提升直驱型永磁风电机组故障穿越能力的改进控制策略研究[J].电力系统保护与控制,2016,44(9):69-74,6.基金项目
上海市科委科技创新项目(14DZ1200905)；上海绿色能源并网工程中心(13DZ2251900) （14DZ1200905）
