电力系统自动化2016，Vol.40Issue(12)：117-123,150,8.DOI:10.7500/AEPS20150709007
下垂控制逆变器的虚拟功角稳定机理分析
Mechanism Analysis of Virtual Power Angle Stability in Droop-controlled Inverters
摘要
Abstract
Under a large disturbance,similar to synchronous generators (SGs),the transient instability may occur on the voltage-source-type droop-controlled inverters. Moreover, the inverter will turn into a current source since its current saturates,resulting in a more complicated synchronous stability problem.This paper studies on the single-inverter infinite-bus system.The virtual power angle is defined to obtain the virtual power angle characteristics with and without current saturation, which is used to analyze the synchronous stability mechanism of the inverter as well as the instability process.The influences of the fault-clearing time on the virtual power angle stability are also analyzed.And this method is extended to the transient stability analysis of the virtual synchronous machine.Finally,the rationality of the instability analysis method is verified via simulations under MATLAB/Simulink.关键词
逆变器/下垂控制/虚拟功角/虚拟同步机/暂态失稳Key words
inverter/droop control/virtual power angle/virtual synchronous machine/transient instability引用本文复制引用
黄林彬,章雷其,辛焕海,胡家兵,甘德强..下垂控制逆变器的虚拟功角稳定机理分析[J].电力系统自动化,2016,40(12):117-123,150,8.基金项目
国家自然科学基金资助项目(51577168) （51577168）
国家高技术研究发展计划(863计划)资助项目(2015AA050202)。@@@@This work is supported by National Natural Science Foundation of China(No.51577168)and National High Technology Research and Development Program of China(863 Program)(No.2015AA050202) （863计划）
