中国电机工程学报2025，Vol.45Issue(8)：3003-3015,中插13,14.DOI:10.13334/j.0258-8013.pcsee.232315
计及集群构网差异性的并网系统振荡机理
Oscillation Mechanism of Grid-connected System Considering the Differences of Cluster Grid-forming Structure
摘要
Abstract
Virtual synchronous generator control,as a representative grid construction technology,not only delivers inertia and damping support to power systems but also introduces power oscillation challenges.In distributed and differentiated cluster parallel systems,active power oscillation mechanisms become particularly complex.Addressing oscillation issues caused by damping variations among clustered grid-connected units,this paper thoroughly examines how parallel unit damping differences affect system stability and elucidates their stabilization effects on grid-tied systems.Building on this analysis,we propose a comprehensive transient and steady-state damping difference compensation strategy that simultaneously suppresses transient damping variations and corrects steady-state output errors while enhancing system transient response characteristics.The study establishes a state-space small-signal model incorporating the proposed control strategy to investigate how transient power compensation and steady-state power correction components influence parallel system stability.Using root locus analysis,we develop corresponding parameter adjustment methods and selection criteria.Simulation results ultimately validate the strategy's effectiveness in mitigating power oscillations induced by clustered unit damping differences.关键词
虚拟同步发电机/有功振荡/阻尼差/暂态功率补偿/稳态功率校正Key words
virtual synchronous generator/active oscillation/damping difference/transient damping compensation/steady state power correction分类
信息技术与安全科学引用本文复制引用
王祺,郭杰帅,代林旺,王瑞明,张泽轲,郭一甫..计及集群构网差异性的并网系统振荡机理[J].中国电机工程学报,2025,45(8):3003-3015,中插13,14.基金项目
可再生能源并网全国重点实验室开放基金项目(NYB51202301637).Project Supported by Open Fund of National Key Laboratory of Renewable Energy Grid-integration(NYB51202301637). （NYB51202301637）
