Investigation of droop characteristics and X/R ratio on small-signal stability of autonomous Microgrid

Author

Tabatabaee, Shahab ; Karshenas, Hamid R. ; Bakhshai, Alireza ; Jain, Praveen

Author_Institution

Dept. of Elec. & Comput. Eng., Isfahan Univ. of Tech., Isfahan, Iran

fYear

2011

fDate

16-17 Feb. 2011

Firstpage

223

Lastpage

228

Abstract

The small-signal or steady-state stability analysis of an autonomous Microgrid and the impact of various parameters are investigated in this paper. This subject has drawn a lot of attention as the penetration of distributed generation is rapidly growing. The control system for an autonomous Microgrid with distributed control is described and the small-signal modeling approach is discussed. The model is validated using time domain simulation. Droop characteristics for grids with dominant reactance and resistance lines are explained and compared. The effect of reverse droop characteristics on small-signal stability is studied. Furthermore, it is shown that how connecting lines with different X/R ratio can affect the stability of an autonomous Microgrid.

Keywords

distributed parameter systems; distributed power generation; power system stability; time-domain analysis; X-R ratio; autonomous microgrid; distributed control; distributed generation; dominant reactance; resistance lines; reverse droop characteristics; small-signal stability analysis; steady-state stability analysis; time domain simulation; Joining processes; Load modeling; Mathematical model; Power system dynamics; Power system stability; Stability analysis; Microgrid; X/R ratio; droop characteristics; small-signal stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Drive Systems and Technologies Conference (PEDSTC), 2011 2nd

Conference_Location

Tehran

Print_ISBN

978-1-61284-422-0

Type

conf

DOI

10.1109/PEDSTC.2011.5742422

Filename

5742422