考虑最优转子动能的风电场自适应频率控制策略  

Adaptive frequency control strategy of wind farm considering optimal rotor kinetic energy

作　　者：杨立滨 宗鸣[1] 李春来 Yang Libin;Zong Ming;Li Chunlai(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《可再生能源》2020年第9期1233-1238,共6页Renewable Energy Resources

基　　金：国家电网公司科技项目(5228001600DT)。

摘　　要：文章提出了一种考虑最优转子动能的风电场自适应频率控制策略。该控制策略通过转子转速与桨距角协调控制,使得风电机组具有更多的可释放转子动能,且频率下垂控制系数通过当前的转子动能的大小进行自适应调节。最后,在PSCAD/EMTDC环境中建立仿真模型,对所提控制策略进行了验证。结果表明,所提控制策略能够更大程度地利用风电场蕴含的转子动能,有效提升了风电场的频率支撑效果。This paper proposes a wind farm adaptive frequency control strategy that takes into account the optimal rotor kinetic energy.The strategy controls the rotor overspeed and the pitch angle control in coordination to make the wind turbine have more releasable rotor kinetic energy,and the droop control coefficient is adaptively adjusted according to the current rotor kinetic energy.Finally,a simulation model was established in the PSCAD/EMTDC environment to verify the proposed strategy.The results show that the proposed strategy can make greater use of the rotor kinetic energy contained in the wind farm,and effectively improve the frequency support effect of the wind farm.

关 键 词：风电场 频率控制 自适应 下垂控制 转子动能 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程] TM614[电气工程—电力系统及自动化]