电力系统保护与控制2025，Vol.53Issue(8)：14-23,10.DOI:10.19783/j.cnki.pspc.240866
新能源经柔直外送系统的暂态同步稳定性分析
Transient synchronization stability analysis of renewable energy transmission via flexible HVDC system
摘要
Abstract
The transient synchronization stability of converter-interfaced power systems under large disturbances presents significant challenges due to the lack of effective nonlinear dynamic system analysis methods.Therefore,taking the renewable energy transmission system via flexible HVDC system as the research scene,this paper establishes a transient interaction model of the system,constructs an analytical Lyapunov function,and estimates the stability region of the system by direct method.A critical energy-based transient synchronization stability criterion is then derived.Based on the theoretical derivation,the coupling relationship between the converters on renewable energy side and the flexible HVDC system side is revealed.From an energy perspective,the influence of control parameters on synchronization stability and the influence of control mode on stability assessment results are analyzed.Finally,a simulation model of a renewable energy transmission system based on modular multilevel converter based high voltage direct current transmission(MMC-HVDC)is developed in Matlab/Simulink to verify the effectiveness of the proposed method and the accuracy of the analysis results.关键词
新能源/并网变换器/锁相环/李雅普诺夫函数/暂态同步稳定性Key words
renewable energy source/grid-connected converter/phase-locked loop/Lyapunov function/transient synchronization stability引用本文复制引用
金国彬,杨阳,辛业春,张海洋,党若峰,李玲..新能源经柔直外送系统的暂态同步稳定性分析[J].电力系统保护与控制,2025,53(8):14-23,10.基金项目
This work is supported by the National Key Research and Development Program of China(No.2021YFB2400900). 国家重点研发计划项目资助(2021YFB2400900) （No.2021YFB2400900）
国家电网公司总部科技项目资助(5100-202399363A-2-2-ZB) （5100-202399363A-2-2-ZB）
