Journal
IEEE TRANSACTIONS ON SMART GRID
Volume 11, Issue 6, Pages 4833-4846Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSG.2020.3004488
Keywords
Power systems; Uncertainty; Wind power generation; Risk management; Load modeling; Stochastic processes; Energy storage; Wind power curtailment; continuous-time unit commitment; Bernstein polynomials and energy storage
Categories
Funding
- FEDER funds through COMPETE 2020
- FCT [POCI-010145-FEDER-029803, 02/SAICT/2017]
- FLEXIMAR-Project (Novel Marketplace for Energy Flexibility) - Business Finland
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Wind power curtailment (WPC) occurs because of the non-correlation between wind power generation (WPG) and load, and also due to the fast sub-hourly variations of WPG. Recently, advances in energy storage technologies facilitate the use of bulk energy storage units (ESUs) to provide the ramping required to respond to fast sub-hourly variations of WPGs. To minimize the sub-hourly WPC probability, this paper addresses a generic continuous-time risk-based model for sub-hourly scheduling of energy generating units and bulk ESUs in the day-ahead unit commitment (UC) problem. Accordingly, the Bernstein polynomials are hosted to model the continuous-time risk-based UC problem with ESU constraints. Also, the proposed continuous-time risk-based model ensures that the generating units and ESUs track the sub-hourly variations of WPG, while the load and generation are balanced in each sub-hourly intervals. Finally, the performance of the proposed model is demonstrated by simulating the IEEE 24-bus Reliability and Modified IEEE 118-bus test systems.
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