Small-signal stability analysis of parallel inverter system with power differential term droop control

被引：0
|
作者：
Chen X. [1 ]
Zhang C. [1 ]
Huang Q. [1 ]
Luo M. [1 ]
机构：
[1] School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, Sichuan Province
来源：
| 2016年 / Power System Technology Press卷 / 40期
关键词：
Droop control; Microgrid; Power differential term; Small signalstability;
D O I：
10.13335/j.1000-3673.pst.2016.11.028
中图分类号：
学科分类号：
摘要：
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. © 2016, Power System Technology Press. All right reserved.
引用
收藏
页码：3467 / 3473
页数：6
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