Design, analysis, and real-time testing of a controller for multibus microgrid system

被引:500
作者
Li, YW [1 ]
Vilathgamuwa, DM [1 ]
Loh, PC [1 ]
机构
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Adv Power Elect, Singapore 2263, Singapore
关键词
distributed generation (DG) system; hardware in-the-loop-simulation; microgrid; paralleled operation; power flow control;
D O I
10.1109/TPEL.2004.833456
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper concentrates on the design and analysis of a controller for multibus microgrid system. The controller proposed for use with each distributed generation (DG) system in the microgrid contains inner voltage and current loops for regulating the three-phase grid-interfacing inverter, and external power control loops for controlling real and reactive power flow and for facilitating power sharing between the paralleled DG systems when a utility fault occurs and the microgrid islands. The controller also incorporates synchronization algorithms for ensuring smooth and safe reconnection of the micro and utility grids when the fault is cleared. With the implementation of the unified controller, the multibus microgrid system is able to switch between islanding and grid-connected modes without disrupting critical loads connected to it. The performance of this unified controller has been verified in simulation using a real-time digital simulator (RTDS1) and experimentally using a scaled laboratory prototype.
引用
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页码:1195 / 1204
页数:10
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