Dynamic Response of Distributed Generators in a Hybrid Microgrid

Dewadasa, M.; Ghosh, Arindam; Ledwich, G.

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Authors

Dewadasa, M.

Ghosh, Arindam

Ledwich, G.

Date

2011

Type

Conference Paper

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Citation

Dewadasa, M. and Ghosh, A. and Ledwich, G. 2011. Dynamic Response of Distributed Generators in a Hybrid Microgrid, in - (ed), Power and Energy Society General Meeting, 2011 IEEE, Jul 24 2011. San Diego, CA: Institute of Electrical and Electronics Engineers ( IEEE ).

Source Title

2011 IEEE Power and Energy Society General Meeting

Source Conference

Power and Energy Society General Meeting, 2011 IEEE

Abstract

A microgrid may be supplied from inertial (rotating type) and non-inertial (converter-interfaced) distributed generators (DGs). However the dynamic response of these two types of DGs is different. Inertial DGs have a slower response due to their governor characteristics while non-inertial DGs have the ability to respond very quickly. The focus of this paper is to propose better controls using droop characteristics to improve the dynamic interaction between different DG types in an autonomous microgrid. The transient behavior of DGs in the micro-grid is investigated during the DG synchronization and load changes. Power sharing strategies based on frequency and voltage droop are considered for DGs. Droop control strategies are proposed for DGs to improve the smooth synchronization and dynamic power sharing minimizing transient oscillations in the microgrid. Simulation studies are carried out on PSCAD for validation.