电力系统自动化2024，Vol.48Issue(14)：139-146,8.DOI:10.7500/AEPS20230914004
具有时变增益的分布式有限时间二次调频策略
Distributed Finite-time Secondary Frequency Regulation Strategy with Time-varying Gain
李志军 1苗庆玉 2郭燕龙 2张家安1
作者信息
- 1. 省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津市 300130||河北工业大学电气工程学院,天津市 300130
- 2. 河北工业大学电气工程学院,天津市 300130
- 折叠
摘要
Abstract
The increase of distributed generators and the input of sensitive loads in microgrids have made it difficult to guarantee the system dynamic performance by relying solely on traditional distributed secondary frequency regulation strategy with progressive convergence characteristics,while the convergence upper bound of commonly used finite-time frequency regulation strategy is limited by system initial state and system parameters to varying degrees.To solve this problem,a distributed finite-time frequency regulation strategy with time-varying gain is proposed and designed based on the distributed control principle.First,the working mechanism of the traditional distributed secondary frequency regulation strategy is introduced,and the limitations of commonly used finite-time frequency regulation strategy are analyzed by using Lyapunov stability theory.Then,on the basis of traditional distributed frequency regulation strategy,the constant gain is improved to a time-varying function with periodic acceleration convergence characteristics according to its progressive convergence characteristics.And a distributed finite-time frequency regulation strategy with time-varying gain is proposed and designed,which solves the problem that the convergence time is limited by system initial state and system parameters.Finally,the effectiveness and superiority of the proposed method in accelerating frequency convergence and improving system flexibility are verified through the theory and simulation.关键词
微电网/调频/一致性算法/有限时间收敛/时变增益Key words
microgrid/frequency regulation/consensus algorithm/finite-time convergence/time-varying gain引用本文复制引用
李志军,苗庆玉,郭燕龙,张家安..具有时变增益的分布式有限时间二次调频策略[J].电力系统自动化,2024,48(14):139-146,8.
