Single mode grid-connected/islanded microgrid seamless transition based on nonlinear droop control technology

被引：0
|
作者：
Nie Z. [1 ]
Liang H. [1 ]
Luo H. [1 ]
Jin Y. [2 ]
机构：
[1] National Active Distribution Network Technology Research Center (Beijing Jiaotong University), Haidian District, Beijing
[2] State Grid Beijing Electric Power Research Institute, Fengtai District, Beijing
来源：
Dianwang Jishu/Power System Technology | 2016年 / 40卷 / 05期
关键词：
Droop curve; Dual mode; Nonlinear; Seamless transition; Single mode;
D O I：
10.13335/j.1000-3673.pst.2016.05.012
中图分类号：
学科分类号：
摘要：
During dual mode grid-connected/islanding transition, phenomenon of static switch lagging behind control switch and control instructions changing severely makes microgrid produce voltage and current distortion and impact harming power supply safety. By analyzing reasons of voltage and current distortion, this paper adopts improved method of droop single mode grid-connected/islanding transition and droop curve translation combining nonlinear droop control strategy. On this basis, through adjusting inverter power output before switching, control instruction smooth transition is achieved and voltage and current distortion and impact are restrained, realizing grid-connected/islanding seamless and smooth transition. Simulations and experiments verify feasibility of the proposed power control and transition strategy. © 2016, Power System Technology Press. All right reserved.
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页码：1371 / 1378
页数：7
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