摘要
风电在电力系统的渗透率日益提高,导致电网惯量逐渐降低,对电网的稳定运行提出了挑战。由于风机本身不具备类似传统发电机的频率调节辅助功能,因此风电机组的调频控制策略成为当前风力发电研究的热点。针对该问题,本文中的风电机组分别在最大功率点跟踪模式和限功率模式下运行,采用惯量控制和下垂控制两种方法参与电网频率支撑。搭建了传统发电机组和风电机组模型,通过半实物仿真实验对控制策略进行了验证。实验结果表明,风电机组采用这两种控制方法能够对电网频率动态特性进行有效改善。
The increasing penetration rate of wind power in the power system has led to a gradual decrease in the inertia of the power grid,posing a challenge to the stable operation of the power grid.Because wind turbines don’t have the frequency adjustment auxiliary function similar to the traditional generators,the frequency control strategy of the wind turbines has become a hot spot in wind power generation research. In response to this problem,the wind turbines in this paper operate in the maximum power point tracking mode and the limited power mode respectively,and use the inertia control and droop control methods to participate in the grid frequency support. The traditional generators and wind turbines model were built,and the control strategy was verified by semi-physical simulation experiment.The experimental results show that the wind turbines can effectively improve the grid frequency dynamics by using these two control methods.
作者
袁康男
由蕤
辛英超
YUAN Kang-nan;YOU Rui;XIN Ying-chao(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)
出处
《电子设计工程》
2020年第3期144-148,152,共6页
Electronic Design Engineering
基金
山东省自然科学基金(ZR2016EEQ11)。
关键词
风力发电
频率支撑
惯量控制
下垂控制
半实物仿真实验
wind power generation
frequency support
inertia control
droop control
semi-physical simulation experiment
