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Sizing Energy Storage to Accommodate High Penetration of Variable Energy Resources

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5 Author(s)
Makarov, Y.V. ; Energy Sci. & Technol. Div., Pacific Northwest Nat. Lab., Richland, WA, USA ; Pengwei Du ; Kintner-Meyer, M.C.W. ; Chunlian Jin
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The variability and nondispatchable nature of wind and solar energy production presents substantial challenges for maintaining system balance. Depending on the economic considerations, energy storage can be a viable solution to balance energy production with consumption. This paper proposes to use discrete Fourier transform to decompose the required balancing power into different time-varying periodic components, i.e., intraweek, intraday, intrahour, and real-time. Each component can be used to quantify the maximum energy storage requirement for different types of energy storage. This requirement is the physical limit that could be theoretically accommodated by a power system. The actual energy storage capacity can be further quantified within this limit by the cost-benefit analysis (future work). The proposed approach has been successfully used in a study conducted for the 2030 Western Electricity Coordinating Council system model. Some results of this study are provided in this paper.

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Sustainable Energy, IEEE Transactions on  (Volume:3 ,  Issue: 1 )