Event-triggered Frequency Control Strategy for AC Microgrids Considering Reserved Inertia and Communication Delay

被引：0
作者：
Liu, Yachuang [1 ]
Yang, Ting [1 ]
Li, Hao [1 ]
机构：
[1] School of Electrical and Information Engineering, Tianjin University, Tianjin
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2024年 / 48卷 / 24期
基金：
中国国家自然科学基金;
关键词：
AC microgrid; communication delay; event-triggered communication mechanism; load frequency control; Lyapunov stability; reserved inertia;
D O I：
10.7500/AEPS20230829011
中图分类号：
学科分类号：
摘要：
In isolated AC microgrids, the impact of low inertia due to the increased penetration of renewable energy generation and the communication delay of public communication networks on the stability of the load frequency control system cannot be ignored. In this regard, this paper proposes an adaptive event-triggered load frequency control strategy for isolated AC microgrids considering reserve inertia and communication delay constraints. Firstly, a bounded adaptive event-triggered communication mechanism is designed. This mechanism can effectively save communication resources and ensure the sensitivity of the control center to monitor the frequency state when the frequency deviation returns to the permissible interval. Then, the nonlinear saturation model of reserve inertia is constructed with full consideration of the reserve inertia and communication delay constraints. Finally, the design criteria for the stability and parameters of the proposed control method under the communication delay constraints are rigorously deduced. A parameter optimization method considering the balance of control performance and communication resources is also proposed. Simulation results show that the proposed control strategy can ensure the system robustness while effectively improving the dynamic response characteristics of frequency control. © 2024 Automation of Electric Power Systems Press. All rights reserved.
引用
收藏
页码：79 / 87
页数：8
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