Secondary Control for Reactive Power Sharing in Droop-Controlled Islanded MicroGrids

A. Micallef, M. Apap, C. Spiteri-Staines, Josep M. Guerrero

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31 Citationer (Scopus)
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Abstrakt

This paper focuses on the islanded operation of microgrids. In this mode of operation, the microsources are required to cooperate autonomously to regulate the local grid voltage and frequency. Droop control is typically used to achieve this autonomous voltage and frequency regulation. However, droop control has real and reactive power sharing limitations when there are mismatches between the microsources. This paper analyses the effect due to mismatches in the power line impedances connecting the source inverters to the microgrid.
From the simulations results obtained, it was shown that the reactive power demand is unequally shared between the microsource inverters when there are mismatches between the power line impedances. To achieve equal reactive power sharing between the inverters, an external loop requiring low bandwidth
communications was implemented in a central controller.
Simulation results are presented showing the feasibility of the proposed solution in achieving reactive power sharing between the inverters connected to the microgrid.
OriginalsprogEngelsk
TitelProceedings of the 21st IEEE International Symposium on Industrial Electronics (ISIE), 2012
Antal sider7
ForlagIEEE
Publikationsdato2012
Sider1627-1633
ISBN (Trykt)978-1-4673-0159-6
ISBN (Elektronisk)978-1-4673-0157-2
DOI
StatusUdgivet - 2012
Begivenhed21st IEEE International Symposium on Industrial Electronics - , Kina
Varighed: 28 maj 201231 maj 2012

Konference

Konference21st IEEE International Symposium on Industrial Electronics
LandKina
Periode28/05/201231/05/2012
NavnIndustrial Electronics (ISIE), IEEE International Symposium on
ISSN2163-5137

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