Journal
APPLIED ENERGY
Volume 160, Issue -, Pages 28-38Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2015.09.039
Keywords
Stochastic; Microgrid; Energy management; Affine arithmetic; Spinning reserve
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In this paper, an efficient two stage stochastic optimal energy and reserve management approach is proposed for a microgrid. In the first stage, the optimal power schedule is determined based on the load, wind and solar power forecasts. The possible uncertainties in forecasts are expressed as perturbations in nodal power injections and the corresponding optimal spinning reserves are estimated using sensitivity analysis. Using this information system, the actual spinning reserve for the discrepancy between the measured and forecasted data is directly dispatched at stage-2, utilizing the remaining capacity of demand response, grid purchase and other non-renewable distributed energy resources (DERs). A stochastic perturbed optimal power flow COPE) based on affine arithmetic (AA) and stochastic weight tradeoff particle swarm optimization (SWT-PSO) is proposed and investigated on CIGRE LV benchmark microgrid. The approach is found to be better in terms of operational planning, real time computation and bounds of power flow & cost variables. (C) 2015 Elsevier Ltd. All rights reserved.
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