Multiple distribution static synchronous compensators for distribution feeder voltage support

Author

Perera, Lasantha B. ; Ledwich, Gerard ; Ghosh, A.

Author_Institution

Sch. of Eng. Syst., Queensland Univ. of Technol., Brisbane, QLD, Australia

Volume

6

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

285

Lastpage

293

Abstract

The potential of multiple distribution static synchronous compensators (DSTATCOMs) to improve the voltage profile of radial distribution networks has been reported in the literature by few authors. However, the operation of multiple DSTATCOMs across a distribution feeder may introduce control interactions and/or voltage instability. This study proposes a control scheme that alleviates interactions among controllers and enhances proper reactive power sharing among DSTATCOMs. A generalised mathematical model is presented to analyse the interactions among any number of DSTATCOMs in the network. The criterion for controller design is developed by conducting eigenvalue analysis on this mathematical model. The proposed control scheme is tested in time domain on a sample radial distribution feeder installed with multiple DSTATCOMs and test results are presented.

Keywords

control system synthesis; eigenvalues and eigenfunctions; power distribution control; power distribution lines; reactive power control; static VAr compensators; time-domain analysis; DSTATCOM; controller design; distribution feeder voltage support; eigenvalue analysis; generalised mathematical model; multiple distribution static synchronous compensators; radial distribution network voltage profile; reactive power sharing; time domain; voltage instability;

fLanguage

English

Journal_Title

Generation, Transmission & Distribution, IET

Publisher

iet

ISSN

1751-8687

Type

jour

DOI

10.1049/iet-gtd.2011.0197

Filename

6177799