电网技术2024，Vol.48Issue(2)：630-639,中插32,11.DOI:10.13335/j.1000-3673.pst.2022.2462
可再生能源高渗透下时滞孤岛微电网的负荷频率控制
Load Frequency Control of Islanded Microgrids With Time-delay Under High Penetration of RESs
摘要
Abstract
To address the effect of low inertia caused by the large-scale access of the renewable energy sources in the islanded microgrid systems and the communication delays in the open communication networks on the system stability,this paper investigates the load frequency control problem of the low-inertia islanded microgrid systems under the influence of time-varying delays.First,for the time-delayed microgrids,a hierarchical frequency control model with the additional virtual inertia control is proposed.Then,a new Lyapunov-Krasovskii functional is developed by introducing the delay-product-type term and the augmented s-dependent integral term.After that,to reduce the conservativeness of the main result,the constructed functional is effectively estimated by using the composite slack-matrix-based integral inequality,the quadratic inequality,and the convex combination.Finally,the simulations in different scenarios verify that the proposed method improves the time-delay stability margin and the dynamic performance of the islanded microgrids,and the relationships between the time-delay stability margins,and the controller parameters and the nonlinear load disturbances are also illustrated.关键词
孤岛微电网/负荷频率控制/时滞/虚拟惯性控制/低惯性/Lyapunov-Krasovskii泛函Key words
islanded microgrid/load frequency control/time delay/virtual inertial control/low inertia/Lyapunov-Krasovskii functional分类
信息技术与安全科学引用本文复制引用
钱伟,孙晓彤,费树岷..可再生能源高渗透下时滞孤岛微电网的负荷频率控制[J].电网技术,2024,48(2):630-639,中插32,11.基金项目
国家自然科学基金项目(61973105) （61973105）
河南省创新型科技团队(CXTD2016054).Project Supported by National Natural Science Foundation of China(61973105) （CXTD2016054）
the Innovation Scientists and Technicians Troop Construction Projects of Henan Province(CXTD2016054). （CXTD2016054）
