全球能源互联网2025，Vol.8Issue(4)：445-455,11.DOI:10.19705/j.cnki.issn2096-5125.20250071
构网型-跟网型混合多变流器系统小干扰稳定分析与参数优化研究
Research on Small Signal Stability Analysis and Parameter Optimization of Grid-following and Grid-forming Hybrid Multi-converter System
摘要
Abstract
With the increase of renewable energy penetration,the dynamic characteristics of the power system are increasingly complex.For the stability analysis and optimization research of complex system such as multi-converter grid-connected system,the traditional modeling analysis method relies on a specific working equilibrium point,and needs repeated calculation analysis when the working condition changes.The Nyquist stability criterion can only provide a single qualitative analysis result.At the same time,as the premise of stability analysis,it is difficult to take into account accuracy and efficiency in system modeling.And the equivalent aggregation model is difficult to evaluate and accurately identify the specific impact of each converter on system stability.Therefore,a system model based on the grid-connected port node of the reserved converter is proposed in this study.The whole modeling and analysis process are located in the discrete domain framework.By calculating the system mode and carrying out the sensitivity quantization analysis,it can provide an intuitive reference for the design of the stability optimization scheme.The test results show that the proposed method can identify the dominant mode of the system accurately and provide strong support for the stability optimization of the system.At the same time,this method has a wide application prospect in the stability analysis and optimization of multi-converter grid-connected systems.关键词
小干扰稳定分析/离散状态空间模型/参数灵敏度/多机系统Key words
small signal stability analysis/discrete state space model/parameter sensitivity/multi-converter system分类
信息技术与安全科学引用本文复制引用
于琳琳,丁咚,毛玉宾,程昱明,费思媛,徐晋,汪可友..构网型-跟网型混合多变流器系统小干扰稳定分析与参数优化研究[J].全球能源互联网,2025,8(4):445-455,11.基金项目
国网河南省电力公司科技项目(5217L024000V).Science and Technology Foundation of State Grid Henan Electric Power Company(5217L024000V). （5217L024000V）
