电力系统自动化2017，Vol.41Issue(3)：46-53,116,9.DOI:10.7500/AEPS20160322010
引入功率微分项下垂控制的微电网小信号稳定性分析
Small-signal Stability Analysis of Microgrid Using Droop Control with Power Differential Term
摘要
Abstract
Generally,droop control is used to achieve power distribution in microgrid,but it is easily to produce oscillation under disturbances.Adding a power differential term in droop equations is an effective way to suppress the oscillation.In this paper,microgrid small signal models of the conventional droop control and the power differential droop control are established.The small-signal analysis is presented to identify the relationship between the controller parameters or the line parameters and the system stability.And the methods for selecting control parameters are summarized.Then,the sensitivity analysis is presented to contrast the degree of participation of state variables in the low-frequency modes.And the association between the line parameters and the participation factors is studied.The conclusion is that the system damping increases with the increase of length or impedance ratio of line.And the dominance of eigenvalue on each inverter source is easy to change.Finally,simulation results in different conditions are used to verify these.关键词
微电网(微网)/下垂控制/小信号稳定性/功率微分项/参与因子/线路参数Key words
microgrid/droop control/small-signal stability/power differential term/participation factors/line parameters引用本文复制引用
陈昕,张昌华,黄琦..引入功率微分项下垂控制的微电网小信号稳定性分析[J].电力系统自动化,2017,41(3):46-53,116,9.基金项目
第50批教育部留学归国人员科研启动基金资助项目“计及配电网静态电压稳定性的电动汽车虚拟电厂运行管理策略研究” （）
中央高校基本科研业务费专项资金资助项目(ZYGX2015J104).This work is supported by Fundamental Research Funds for the Central Universities (No.ZYGX2015J104). （ZYGX2015J104）
