Stochastic Optimization of Renewable-Based Microgrid Operation Incorporating Battery Operating Cost

Integration of renewable energy resources in microgrids has been increasing in recent decades. Due to the randomness in renewable resources such as solar and wind, the power generated can deviate from forecasted values. This variation may cause increased operating costs for committing costly reserve...

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Bibliographic Details
Published in:IEEE transactions on power systems 2016-05, Vol.31 (3), p.2289-2296
Main Authors: Nguyen, Tu A., Crow, M. L.
Format: Article
Language:English
Subjects:
Batteries
Discharges (electric)
Energy storage
Fuels
Generators
Microgrids
renewable energy
Stochastic processes
unit commitment
Wind forecasting
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Summary:Integration of renewable energy resources in microgrids has been increasing in recent decades. Due to the randomness in renewable resources such as solar and wind, the power generated can deviate from forecasted values. This variation may cause increased operating costs for committing costly reserve units or penalty costs for shedding load. In addition, it is often desired to charge/discharge and coordinate the energy storage units in an efficient and economical way. To address these problems, a novel battery operation cost model is proposed which considers a battery as an equivalent fuel-run generator to enable it to be incorporated into a unit commitment problem. A probabilistic constrained approach is used to incorporate the uncertainties of the renewable sources and load demands into the unit commitment (UC) and economic dispatch problems.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2015.2455491