电网技术2016，Vol.40Issue(11)：3467-3473,7.DOI:10.13335/j.1000-3673.pst.2016.11.028
引入功率微分项下垂控制的逆变器并联系统小信号稳定性分析
Small-Signal Stability Analysis of Parallel Inverter System With Power Differential Term Droop Control
摘要
Abstract
ABSTRACT:For output oscillation problem when parallel inverter system uses conventional voltage amplitude and frequency droop control, introducing power differential term in droop control is an effective method to solve this problem. A complete small-signal model of conventional droop control with power differential droop control added is developed. Firstly, impact of droop parameters and power differential parameters on eigenvalue distribution is studied. It is concluded that damping ratio of low-frequency eigenvalues is increased and oscillation caused by disturbance is suppressed when power differential term is added. Secondly, influence of control parameters on system small-signal stability is analyzed, providing theoretical basis for parallel system performance analysis and droop coefficient design. Above conclusions are verified with Matlab/Simulink simulation.关键词
微电网/下垂控制/小信号稳定性/功率微分项Key words
microgrid/droop control/small signal stability/power differential term分类
信息技术与安全科学引用本文复制引用
陈昕,张昌华,黄琦,罗曼..引入功率微分项下垂控制的逆变器并联系统小信号稳定性分析[J].电网技术,2016,40(11):3467-3473,7.基金项目
第50批教育部留学回国人员科研启动基金；中央高校基本业务费项目(ZYGX2015J104)。Project Supported by the Fundamental Research Funds for the Central Universities(ZYGX2015J104) （ZYGX2015J104）
