Distributed DSTATCOMs for distribution line enhancement

Perera, L.; Ledwich, G.; Ghosh, Arindam

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Authors

Perera, L.

Ledwich, G.

Ghosh, Arindam

Date

2011

Type

Conference Paper

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Citation

Perera, L. and Ledwich, G. and Ghosh, A. 2011. Distributed DSTATCOMs for distribution line enhancement, in - (ed), 2011 21st Australasian Universities Power Engineering Conference, AUPEC 2011, Sep 25 2011. Australia: Institute of Electrical and Electronics Engineers ( IEEE ).

Source Title

2011 21st Australasian Universities Power Engineering Conference (AUPEC 2011)

Source Conference

2011 21st Australasian Universities Power Engineering Conference, AUPEC 2011

Abstract

Distribution feeder voltage reinforcement by multiple site reactive power compensation systems has recently been reported by many researchers. However, voltage control by multiple DSTATCOMs across a distribution feeder may introduce control interactions and/or voltage instability. This paper addresses these control interaction issues and proposes a control scheme that alleviates interactions among controllers. The proposed control scheme also enhances proper sharing of reactive power among DSTATCOMs. A mathematical model of a distribution system with any number of DSTATCOMs is developed to investigate the performance of the control system. This mathematical model is used to conduct eigenvalue analysis to develop the criterion for controller design. The proposed control scheme is tested in time domain on a sample radial distribution feeder installed with multiple DSTATCOMs and test results are presented.