摘要
风电的大规模发展使越来越多的永磁直驱风电机组接入电网,影响电网安全稳定运行,其中风电机组的低电压穿越(LVRT)问题是风电并网安全性方面的首要问题。文中首先基于传统风电场和其他新能源发电场LVRT策略的研究成果,结合永磁直驱风电机组特点,综述较为主流的适用于永磁直驱风电场的LVRT技术手段,为永磁直驱机型为主的风电场提供相应策略。然后,分析各个方法的应用场景与工作机理,比较不同方法的优势与不足,并针对不同方法的应用前景提出相应建议。最后,总结未来LVRT技术的发展方向,并指出当前风电场大规模并网仍需解决的经济技术难题,为进一步提升大规模风电安全消纳水平指明方向。
With the large-scale development of wind power,it increases rapidly the number of directly-driven permanent magnet wind turbines connected to the grid,thus which threatens the safety and stability of operation in the power grid.The low voltage ride-through(LVRT)is the primary problem in terms of the safety of wind power connected to grid.The corresponding strategies for wind farms with directly-driven permanent magnet synchronous generator(D-PMSG)are provided from the present researches of LVRT technology for traditional wind farms and other new energy power plants.A review of mainstream LVRT technologies suitable for the features of wind farms with D-PMSG is reported.The mechanism and application of each technology are introduced.The advantages and disadvantages of different technologies are compared,and then corresponding suggestion on the future application is given out.The trend of LVRT technology is discussed.The economic and technical challenges for current large-scale grid-connected wind farms are pointed out for further research.
作者
冯子木
孙国强
滕德红
李群
刘建坤
赵静波
FENG Zimu;SUN Guoqiang;TENG Dehong;LI Qun;LIU Jiankun;ZHAO Jingbo(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;State Grid Jiangsu Electric Power Co.,Ltd.Research Institute,Nanjing 211103,China)
出处
《电力工程技术》
北大核心
2021年第2期75-85,共11页
Electric Power Engineering Technology
基金
国家重点研发计划资助项目(2018YFB0904500)。
关键词
低电压穿越(LVRT)
永磁直驱风电机组
无功补偿
储能
协调控制
low voltage ride-through(LVRT)
directly-driven wind turbine with permanent magnet synchronous generator
reactive power compensation
power restoration
coordinated control
