电网技术2024，Vol.48Issue(7)：2804-2814,中插49-中插51,14.DOI:10.13335/j.1000-3673.pst.2023.0889
基于分布式模型预测的高比例风电系统多源协同负荷频率控制策略
Highly-proportional Wind Power System Multi-Source Collaborate Load Frequency Control Strategy Based on Distributed Model Prediction
摘要
Abstract
As wind power gradually replaces the traditional power sources,there has been a deterioration in the system frequency adjustment.The active participation of wind power in Load Frequency Control(LFC)of an interconnected system becomes a new way to improve the system frequency characteristics.In response to this background,based on the distributed Model Predictive Control,this paper proposes a multi-source collaborative LFC strategy for interconnected systems with high wind power permeability by overall considering the frequency modulation resources and their response characteristics of the traditional units,the wind turbines and the energy storage in an interconnected system.Firstly,by analyzing the impacts of different wind speeds on the frequency modulation characteristics of the wind turbines,a multi-wind-speed-stage power response model for the wind turbines is proposed;Secondly,the LFC model of the interconnection system is constructed involving the traditional units,the wind turbines and the energy storage power stations,and the frequency response constraints of each of the units are taken into account.The weighted function with the Area Control Error signal and the automatic generation cost of the interconnection system is taken as the objective to establish the distributed model prediction controllers of the areal information interaction;Finally,in order to achieve a global optimal control of the load frequency of the interconnected system,each controller combines the operating status of units in its own area with the other areas to solve the power reference values of all the units online.The simulation results show that the proposed strategy effectively reduces the amplitude of the system frequency and the tie line power fluctuations,achieving the optimal power allocation among the units and reducing the cost of automatic power generation of the system as well.关键词
分布式模型预测控制/负荷频率控制/风电机组/频率调整/系统经济性Key words
distributed model predictive control/load frequency control/wind turbine/frequency regulation/system economy分类
信息技术与安全科学引用本文复制引用
杨冬锋,朱军豪,姜超,郝中华,赵冠雄..基于分布式模型预测的高比例风电系统多源协同负荷频率控制策略[J].电网技术,2024,48(7):2804-2814,中插49-中插51,14.基金项目
国家自然科学基金项目(51977031).Project Supported by National Natural Science Foundation of China(No.51977031). （51977031）
