首页|非最小相位零点对弱联接条件下电压源型变流器并网系统稳定性影响机理分析

非最小相位零点对弱联接条件下电压源型变流器并网系统稳定性影响机理分析

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右半平面(right half plane,RHP)零点诱发的非最小相位响应会显著恶化控制系统的动态性能.构建了电压源型换流器并网系统的单输入单输出(single-input single-output,SISO)传递函数模型,揭示了弱联接条件下并网系统在整流/逆变运行模式、电网阻抗及运行状态等对RHP零点产生机制的影响机理,探明了SISO开环传递函数RHP零点与其非最小相位动态的关联机制,分析了并网系统RHP零点对锁相环等控制带宽的作用规律.基于MATLAB/Simulink验证了分析的正确性.
Impact mechanism analysis of system stability for non-minimum-phase zeros on VSC under weak coupling conditions
The right-half-plane(RHP)zeros induce non-minimum phase responses,significantly degrading the dynamic performance of control systems.This paper establishes a single iniput single output(SISO)transfer function model for the voltage source converter grid-connected system.It reveals the mechanisms by which the rectification/inversion operating modes,grid impedance,and operating conditions affect the generation of RHP zeros under weak coupling conditions.The relationship between RHP zeros and their non-minimum phase dynamics in the SISO transfer function system is explored,and the influence of RHP zeros on the dynamics of phase-locked loop(PLL)is analyzed.The correctness of the analysis is validated by MATLAB/Simulink.

weak-grid-tiedRHP zerostransfer functionstabilitynon-minimum-phase dynamics

刘健芸、吴广禄、王姗姗、谢依帆、尹睿

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电网安全与节能国家重点实验室(中国电力科学研究院有限公司),北京 100192

弱电网 RHP零点 传递函数 稳定性 非最小相位动态

2025

供用电
中国电机工程学会城市供电专业委员会,上海市电力公司市区供电公司

供用电

北大核心
影响因子:0.856
ISSN:1006-6357
年,卷(期):2025.42(1)