南方电网技术2026，Vol.20Issue(1)：24-34,11.DOI:10.13648/j.cnki.issn1674-0629.2026.01.003
基于混合势函数法的陆上风电全直流发电系统大扰动稳定性分析
Large Disturbance Stability Analysis of Onshore Wind Power Full DC Power Generation System Based on Mixed Potential Function
摘要
Abstract
Onshore wind power full DC power generation system can effectively solve the problems of harmonic resonance and reac-tive power transmission in the process of grid-connected large-scale wind power.But the transient stability mechanism under large disturbances is different from the traditional AC system due to the many types of power electronic devices and the complex control coupling of each device in the system.In order to investigate the large disturbance stability mechanism of onshore wind power full DC power generation system,firstly,the system equivalent model is established based on the operation characteristics and control strategy of key equipment in the full DC system for the scheme of"DC convergence-AC output".Then,based on the Brayton-Moser mixed potential function theory,the large disturbance stability mechanism of the onshore wind power full DC power generation system is analyzed.By solving stability criterion,the influence of key parameters on the system large disturbance stability is analyzed.The results show that the stability of the system is related to both the system parameters and control parameters of each converter.Finally,a simulation model is built based on MATLAB/Simulink to verify the correctness of the theoretical analysis.关键词
全直流发电系统/直流汇集/混合势函数法/稳定域/大扰动稳定性分析Key words
full DC power generation system/DC convergence/mixed potential function method/stability region/large disturbance stability analysis分类
能源科技引用本文复制引用
彭岩清,李凤婷,尹纯亚..基于混合势函数法的陆上风电全直流发电系统大扰动稳定性分析[J].南方电网技术,2026,20(1):24-34,11.基金项目
国家重点研发计划资助项目(2021YFB1507001).Supported by the National Key Research and Development Program of China(2021YFB1507001). （2021YFB1507001）
