Investigation of small signal dynamics of inverter-based Distributed Generation in grid-connected and autonomous modes of operation

Author

Sharifzadeh, M.E. ; Jalilian, A.

Author_Institution

Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran

fYear

2011

fDate

16-17 Feb. 2011

Firstpage

229

Lastpage

234

Abstract

A Distributed Generation (DG) unit can be operated either in grid-connected mode or in autonomous mode and has to possess the essential dynamic stability in both cases. This paper presents a systematic approach to small-signal modeling of an inverter based DG unit in grid-connected, autonomous and transient from grid-connected to autonomous modes of operation. A first order eigenvalue sensitivity analysis is done to investigate the effect of changing different parameters on eigenvalues and system dynamics both in the low and high frequency ranges. Simulation results show an acceptable agreement with the loci of eigenvalues.

Keywords

distributed power generation; eigenvalues and eigenfunctions; invertors; power grids; DG unit; autonomous modes; eigenvalues; grid-connected modes; inverter-based distributed generation; small-signal modeling; system dynamics; Eigenvalues and eigenfunctions; Equations; Mathematical model; Power system dynamics; Power system stability; Sensitivity analysis; Voltage control; Distributed Generation; Eigenvalue; Sensitivity Analysis; Small-Signal Dynamic;

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.2011.5742423

Filename

5742423