一种考虑随机通信时延的微网二次电压控制方法

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (3): 69-76.

• 自动化技术与计算机技术 • 上一篇下一篇

一种考虑随机通信时延的微网二次电压控制方法

冯宜伟^*, 马婧

兰州理工大学电气工程与信息工程学院, 甘肃兰州 730050

收稿日期:2022-02-18 出版日期:2024-06-28 发布日期:2024-07-02
通讯作者: 冯宜伟(1973-),男,甘肃景泰人,博士,教授,博导.Email:ywfeng@yeah.net
基金资助:
国家自然科学基金(62141304),甘肃省科技计划资助项目(22CX3JA002,23ZDGA007)

A secondary voltage control method for the microgrid considering stochastic communication delay

FENG Yi-wei, MA Jing

College of Electrical and Information Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2022-02-18 Online:2024-06-28 Published:2024-07-02

摘要/Abstract

摘要： 针对具有随机通信时延的孤岛微网二次电压恢复问题,提出了一种分布式协作一致性算法.首先建立了孤岛微网模型,定性分析了具有随机通信时延的微网系统二次电压恢复机理,引入分布式观测器对系统状态进行估计,提出了一种分布式一致性协作控制方法.然后基于Lyapunov稳定性理论和Schur补原理,得到了随机通信时变时延系统在外部输入为零和不为零两种情况下渐近收敛一致的充分性条件.所提出的控制方法提高了孤岛微网系统的抗扰动能力,满足了闭环系统的稳定性和可靠性要求.最后对微网系统的性能进行仿真验证,证明了定理的可行性和正确性.

关键词: 孤岛微网, 状态观测器, 二次电压, 随机时延

Abstract: A distributed cooperative consensus algorithm is presented for the secondary voltage recovery problem of the islanded microgrid with stochastic communication delay. Firstly, the islanded microgrid model is established, and the secondary voltage recovery mechanism of microgrid system with stochastic communication time delay is qualitatively analyzed. The distributed observer is introduced to estimate the system states, and a distributed consensus cooperative control strategy is proposed. Then, based on Lyapunov stability theory and Schur’s complement principle, the sufficient conditions of asymptotic convergence for the stochastic communication time-varying delay system with zero and non-zero external inputs are obtained. The proposed control method improves the anti-disturbance capability of the islanded microgrid system and meets the stability and reliability requirements of the closed-loop system. Finally, the performance of the microgrid system is verified by simulation, which proves the feasibility and correctness of the theorem.

Key words: islanded microgrid, state observer, secondary voltage, stochastic time delay

中图分类号:

TP273

冯宜伟, 马婧. 一种考虑随机通信时延的微网二次电压控制方法[J]. 兰州理工大学学报, 2024, 50(3): 69-76.

FENG Yi-wei, MA Jing. A secondary voltage control method for the microgrid considering stochastic communication delay[J]. Journal of Lanzhou University of Technology, 2024, 50(3): 69-76.

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一种考虑随机通信时延的微网二次电压控制方法

A secondary voltage control method for the microgrid considering stochastic communication delay

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