Loading constraints for first swing stability margin enhancement of distributed generation

Author

Bidram, Ali ; Hamedani-golshan, M.-E. ; Davoudi, Ali

Author_Institution

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran

Volume

6

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

1292

Lastpage

1300

Abstract

This study extracts effective loading constraints for synchronous machine-based distributed generators (SMDGs) in a micro-grid to ensure their post-fault first swing stability. The notion of trajectory sensitivity is used to determine the sensitivity of the SMDGs rotor angles and velocities with respect to the mechanical input power. Then, appropriate loading constraints for SMDGs are calculated for a set of pre-specified faults. The proposed methodology can be used for a micro-grid with an arbitrary number of SMDGs, under various fault scenarios, as well as both grid-connected and autonomous (islanded) modes of operation. The proposed methodology is verified using time-domain simulation of a modified benchmark system of the IEEE standard 399-1997.

Keywords

IEEE standards; distributed power generation; power grids; power system stability; rotors; sensitivity; synchronous generators; time-domain analysis; IEEE standard 399-1997; SMDG; SMDG rotor angles; autonomous modes; distributed generation; first swing stability margin enhancement; grid-connected modes; islanded modes; loading constraints; microgrid; post-fault first swing stability; synchronous machine-based distributed generators; trajectory sensitivity;

fLanguage

English

Journal_Title

Generation, Transmission & Distribution, IET

Publisher

iet

ISSN

1751-8687

Type

jour

DOI

10.1049/iet-gtd.2012.0018

Filename

6403946