电力系统自动化2016，Vol.40Issue(12)：124-129,178,7.DOI:10.7500/AEPS20150727006
基于虚拟功率的虚拟同步发电机预同步方法
Pre-synchronization Method of Virtual Synchronous Generator Using Virtual Power
摘要
Abstract
The distributed power generation system simulating the characteristics of synchronous generators is grid-friendly to the large power grid.However,a large dash current may be generated at the instant the virtual synchronous generator(VSG) is connected to the grid.This paper proposes a pre-synchronization unit based on the virtual power and the secondary frequency and voltage regulation to achieve seamless transform between the off-disconnection and grid-connection of VSG.Accordingly, the influence of inertia,damping and droop coefficients on the frequency regulation characteristics is analyzed in detail. Simulation and experimental results show that the proposed pre-synchronization control is able to achieve seamless transform between different VSG modes,which is simpler than the conventional pre-synchronization control,while having a good active and reactive power tracking performance.关键词
虚拟同步发电机/二次调频/二次调压/并网逆变器/虚拟功率/预同步Key words
virtual synchronous generator (VSG)/secondary frequency regulation/secondary voltage regulation/grid-connected inverter/virtual power/pre-synchronization引用本文复制引用
魏亚龙,张辉,孙凯,宋琼,郭志强..基于虚拟功率的虚拟同步发电机预同步方法[J].电力系统自动化,2016,40(12):124-129,178,7.基金项目
国家自然科学基金资助项目(51277150) （51277150）
陕西省工业公关项目(2013K07-05) （2013K07-05）
陕西省教育厅产业化培育项目(14JF020)。@@@@This work is supported by National Natural Science Foundation of China(No.51277150),Industrial Research Project of Shaanxi Province (No.2013K07-05),and Industrial Cultivation Project of Shaanxi Provincial Department of Education (No.14JF020) （14JF020）
