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Cordova, S.; Canizares, C.; Lorca, A.; Olivares, D.E. |
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Title |
An Energy Management System With Short-Term Fluctuation Reserves and Battery Degradation for Isolated Microgrids |
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2021 |
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IEEE Transactions on Smart Grid |
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IEEE Trans. Smart Grid |
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12 |
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6 |
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4668-4680 |
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Batteries; Computational modeling; Degradation; Energy management; Microgrids; Generators; Regulation; Energy management system; short-term fluctuations; battery degradation; frequency regulation; microgrid operation |
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Abstract |
Due to the low-inertia and significant renewable generation variability in isolated microgrids, short time-scale fluctuations in the order of seconds can have a large impact on a microgrid's frequency regulation performance. In this context, the present paper presents a mathematical model for an Energy Management System (EMS) that takes into account the operational impact of the short-term fluctuations stemming from renewable generation rapid changes, and the role that renewable curtailment and batteries, including their degradation, can play to counter-balance these variations. Computational experiments on the real Kasabonika Lake First Nation microgrid and CIGRE benchmark test system show the operational benefits of the proposed EMS, highlighting the need to properly model short-term fluctuations and battery degradation in EMS for isolated microgrids with significant renewable integration. |
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1949-3053 |
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WOS:000709090100012 |
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UAI @ alexi.delcanto @ |
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1494 |
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Author |
Cordova, S.; Canizares, C.A.; Lorca, A.; Olivares, D.E. |
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Title |
Frequency-Constrained Energy Management System for Isolated Microgrids |
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Year |
2022 |
Publication |
IEEE Transactions on Smart Grid |
Abbreviated Journal |
IEEE Trans. Smart Grid |
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Volume |
13 |
Issue |
5 |
Pages |
3394-3407 |
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Keywords |
Energy management; Time-frequency analysis; Generators; Batteries; Regulation; Microgrids; Computational modeling; Energy management system; short-term fluctuations; frequency regulation; frequency dynamics; microgrid operation |
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Abstract |
Second-to-second power imbalances stemming from renewable generation can have a large impact on the frequency regulation performance of isolated microgrids, as these are characterized by low inertia and, more commonly nowadays, significant renewable energy penetration. Thus, the present paper develops a novel frequency-constrained Energy Management System (EMS) that takes into account the impact of short-term power fluctuations on the microgrid's operation and frequency regulation performance. The proposed EMS model is based on accurate linear equations describing frequency deviation, rate-of-change-of-frequency, and regulation provision in daily microgrid operations. Dynamic simulations on a realistic CIGRE benchmark test system show the economic and reliability benefits of the presented EMS model, highlighting the need of incorporating fast power fluctuations and their impact on frequency dynamics in EMSs for sustainable isolated microgrids. |
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1949-3053 |
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WOS:000844161700010 |
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UAI @ alexi.delcanto @ |
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1634 |
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