摘要
为解决大规模风电并网条件下电力系统频率稳定问题,提出一种考虑风机状态差异性的风储联合调频控制方法。首先,构建了含风电的电力系统模型,以模型预测控制(model predictive control, MPC)为主控制器来优化风机的输出;然后,在此基础上考虑风机状态差异性,针对MPC统一控制所有风机导致在线计算复杂度过高的问题,引入风机状态一致性控制(state consistency control, SCC)方法以降低预测模型的阶数;最后,根据风电场实际输出功率和MPC以主导风机为基准预测的总输出功率存在偏差的问题,加入储能进行补偿,形成风储协同的控制模式。仿真结果表明,所提策略不仅能够削弱风电内部差异性的影响,而且降低了系统在线计算复杂度,保证了电力系统频率的稳定性。
To address the issue of frequency stability in power systems under large-scale wind power grid integration,a frequency regulation control method of wind-storage coordination considering the differences in wind turbine states is proposed.Initially,a power system model incorporating wind power is constructed,with model predictive control(MPC)as the primary controller to optimize the output of the wind turbines.Then,on this basis,considering the differences in wind turbine state,the state consistency control(SCC)method is introduced to address the problem of online computational complexity arising from uniform control of all wind turbines via MPC,thereby reducing the order of the prediction model.Finally,in response to the deviation between the actual output power of the wind farm and the total predicted output power based on the dominant wind turbine in MPC,energy storage is added for compensation,forming a control mode for wind-storage coordination.The simulation results indicate that the proposed strategy not only mitigates the impact of internal differences within wind power but also reduces the online computational complexity of the system,ensuring the frequency stability of the power system.
作者
赵熙临
叶霄宇
李金星
ZHAO Xilin;YE Xiaoyu;LI Jinxing(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China;Jingmen Power Supply Company,State Grid Hubei Electric Power Co.,Ltd.,Jingmen 448000,China)
出处
《电力科学与技术学报》
北大核心
2026年第1期151-162,共12页
Journal of Electric Power Science And Technology
基金
湖北省自然科学基金联合基金(2023AFD186)。
关键词
不确定性
MPC
计算复杂度
一致性控制
风储协同
uncertainty
MPC
computational complexity
consistency control
wind-storage coordination
