Dynamic characteristics of a hybrid microgrid with inverter and non-inverter interfaced renewable energy sources: A case study

Jayawardena, A, Meegahapola, L, Perera, S and Robinson, D 2012, 'Dynamic characteristics of a hybrid microgrid with inverter and non-inverter interfaced renewable energy sources: A case study', in N. Nair and N. Watson (ed.) Proceedings of 2012 IEEE International Conference on Power System Technology, POWERCON 2012, Auckland, New Zealand, 30 October- 2 November 2012, pp. 1-6.


Document type: Conference Paper
Collection: Conference Papers

Title Dynamic characteristics of a hybrid microgrid with inverter and non-inverter interfaced renewable energy sources: A case study
Author(s) Jayawardena, A
Meegahapola, L
Perera, S
Robinson, D
Year 2012
Conference name 2012 IEEE International Conference on Power System Technology, POWERCON 2012
Conference location Auckland, New Zealand
Conference dates 30 October- 2 November 2012
Proceedings title Proceedings of 2012 IEEE International Conference on Power System Technology, POWERCON 2012
Editor(s) N. Nair and N. Watson
Publisher IEEE
Place of publication United States
Start page 1
End page 6
Total pages 6
Abstract Microgrids are becoming important constituents of electric power distribution networks. Microgrids are typically comprised of both inverter interfaced (e.g. double-fed induction generator (DFIG), solar-photovoltaic (PV) system) and non-inverter interfaced (e.g. synchronous generator) renewable energy generators (REGs), hence their dynamic characteristics are significantly different from the conventional grids comprised of centralised synchronous generators. Different inherent characteristics of REGs, power dispatch levels, relative REG capacities, and external grid characteristics are some of the important features of significant interest in relation to microgrid dynamic behaviour. For this study a microgrid model was developed in DIgSILENT Power Factory based on the IEEE-13 bus system and comparative analysis has been carried out between inverter and non-inverter based REGs. The study has shown that variations in active power dispatch levels and generator relative sizing significantly influence dynamic characteristics of the microgrid hence adequate measures must be taken when designing protection schemes for microgrids. In addition, dynamic reactive power compensation and emulated frequency response schemes must be implemented in microgrids to preserve voltage and frequency stability when operating in islanded mode.
Subjects Electrical and Electronic Engineering not elsewhere classified
Interdisciplinary Engineering not elsewhere classified
Keyword(s) Double-fed induction generator (DFIG)
dynamic behaviour
frequency stability
microgrid
mini-hydro power plant
rate of change of frequency (ROCOF
solar-photovoltaic (PV)
DOI - identifier 10.1109/PowerCon.2012.6401376
ISBN 9781467328685
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