山东电力技术2025，Vol.52Issue(6)：1-9,9.DOI:10.20097/j.cnki.issn1007-9904.2025.06.001
基于线性自抗扰控制的离网虚拟同步发电机频率调节方法
Frequency Regulation Method for Off-grid Virtual Synchronous Generators Based on Linear Active Disturbance Rejection Control
摘要
Abstract
To address the frequency fluctuation issue caused by load mutations in the offline mode of virtual synchronous generators(VSG)and the insufficient dynamic response of traditional proportional-integral(PI)control,this paper proposes a VSG secondary frequency regulation strategy based on linear active disturbance rejection control(LADRC).First,the mathematical model of the off-grid VSG is established,and a LADRC-based frequency control scheme is designed.Its core employs a linear extended state observer(LESO)to observe and estimate the total system disturbances in real time,achieving dynamic compensation through linear state error feedback(LSEF).Finally,a simulation model is built on the Matlab/Simulink platform to conduct comparative analysis of the frequency regulation performance of PI control and LADRC under different load mutation scenarios.The simulation results demonstrate that,compared to traditional PI control,LADRC exhibits superior anti-disturbance capability and faster dynamic response speed,significantly reducing frequency fluctuations and enhancing the dynamic stability characteristics of microgrid frequency.Notably,it maintains stable control performance even under multiple continuous load disturbances.The research results provide a theoretical basis and technical reference for optimizing the frequency control strategy of off-grid VSGs,offering practical application value for improving the stability of microgrids or independent power systems.关键词
虚拟同步发电机/线性自抗扰控制/二次调频/动态响应/负荷扰动Key words
virtual synchronous generator/linear active disturbance rejection control/secondary frequency regulation/dynamic response/load disturbance分类
动力与电气工程引用本文复制引用
丁宏志,潘波,郭晓瑞,文安,叶润..基于线性自抗扰控制的离网虚拟同步发电机频率调节方法[J].山东电力技术,2025,52(6):1-9,9.基金项目
浙江省电力有限公司集体企业科技项目资助(HZTLKJ2023-01) （HZTLKJ2023-01）
四川省科技计划区域创新项目(2024YFHZ0089). Zhejiang Electric Power Corporation Collective Enterprise Technology Project Funding(HZTLKJ2023-01) （2024YFHZ0089）
Sichuan Regional Innovation Project of Science and Technology Program(2024YFHZ0089). （2024YFHZ0089）
