摘要
通过分析直驱永磁同步风力发电机具备的虚拟惯量,建立了风电机组转子旋转动能与电网频率的关系。此外,对永磁同步发电机进行了详细的数学建模,并结合附加虚拟功率的惯量控制,给出了机侧变流器控制策略的设计过程。最后搭建了风电场并网仿真模型进行验证,结果表明,附加虚拟功率的惯量控制策略可有效抑制电网频率波动,具有重要的工程意义。
By analyzing the virtual inertia of direct-drive permanent magnet synchronous wind turbine,the relationship between rotor rotational kinetic energy of wind turbine and grid frequency is established.In addition,the mathematical model of permanent magnet synchronous generator is established in detail,and the design process of machine side converter control strategy is given combined with the inertia control with additional virtual power.Finally,a wind farm grid-connected simulation model is built for verification.The results show that the inertia control strategy with additional virtual power can effectively suppress the frequency fluctuation of the grid,which is of great engineering significance.
作者
冯智慧
苏益辉
李晓英
陈博洋
蔡萍
张中丹
方颖颖
FENG Zhi-hui;SU Yi-hui;LI Xiao-ying;CHEN Bo-yang;CAI Ping;ZHANG Zhong-dan;FANG Ying-ying(State Grid Gansu Electric Power Company Economic and Technical Research Institute,Lanzhou Gansu 730050,China;College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China)
出处
《机械研究与应用》
2022年第4期143-147,共5页
Mechanical Research & Application
关键词
风电
虚拟惯量
永磁同步发电机
频率
wind power
virtual inertia
permanent magnet synchronous generator
frequency
