广东电力2026，Vol.39Issue(8)：1-10,10.DOI:10.3969/j.issn.1007-290X.2026.08.001
高比例新能源系统谐振稳定性研究
Research on Resonant Stability of High-proportion New Energy Systems
摘要
Abstract
To address challenges such as high risks of resonant stability issues in regions with high renewable energy penetration and difficulties in obtaining white-box models for renewable energy grid-connected converters,this study proposes a model-data fusion-driven approach for renewable energy stability analysis and improvement.Breaking through the reliance on complete white-box models in traditional modal analysis and the shortcomings of impedance analysis limited to source-load equivalence,the method first conducts research on resonant stability in high-proportion renewable energy grid-connected systems using complex frequency-domain modal analysis.It establishes calculation methods for oscillation mode frequency,damping coefficient,participation factor and stability margin.Second,based on impedance scanning data,it constructs frequency equivalent impedance for converters,forming an integrated modal analysis algorithm framework combining mechanism model constraints and data-driven completion to resolve the core issue of missing converter models in engineering.Finally,through a modified IEEE 2-area 4-node system,it identifies high-oscillation-risk nodes when grid-following photovoltaic systems are integrated at high proportions and proposes stability improvement measures using grid-forming energy storage.Simulation results validate the method's accuracy and practicality in engineering applications.关键词
新能源并网系统/谐振稳定性/节点导纳矩阵/模态分析/数据驱动Key words
new energy grid-connected system/resonant stability/node admittance matrix/modal analysis/data-driven分类
信息技术与安全科学引用本文复制引用
刘静佳,赵璐璐,褚景春,朱海涛,金翼,余一平..高比例新能源系统谐振稳定性研究[J].广东电力,2026,39(8):1-10,10.基金项目
国家能源集团科技项目(GJNY-24-115) （GJNY-24-115）
