Secured Reserve Scheduling of Pumped-Storage Hydropower Plants in ISO Day-Ahead Market
Due to the fast response ability and high ramping rates, pumped-storage hydropower (PSH) plants are playing an increasingly critical role in mitigating power generation fluctuations induced by the growing proliferation of renewable energy resources. However, because they are energy-limited resources, actual reserve deployment from PSHs would cause the deviation of state-of-charge (SOC) from the scheduled value, which, once accumulated over time, could induce potential violations on SOC limits and cause non-dispatchability of PSHs. In recognizing this potential issue, it can become important to securing the reserve schedule of PSHs and other energy limited resources preventively in the day-ahead market clearing. To ensure reserve dispatchability of PSHs despite SOC deviations, this paper proposes the reserve secure constraints, which are cast as a distributionally robust chance-constrained formulation by judiciously introducing random parameters to describe deployment ratios of scheduled regulation reserve from PSHs. These constraints are converted into tractable second-order cone constraints, and further approximated as linear constraints to be compatible with the current ISO day-ahead market clearing model. A modified IEEE 118-bus system with multiple PSHs is adopted to verify the proposed approach.
L. Wu et al., "Secured Reserve Scheduling of Pumped-Storage Hydropower Plants in ISO Day-Ahead Market," IEEE Transactions on Power Systems, vol. 36, no. 6, pp. 5722 - 5733, Institute of Electrical and Electronics Engineers (IEEE), Nov 2021.
The definitive version is available at https://doi.org/10.1109/TPWRS.2021.3077588
Electrical and Computer Engineering
Intelligent Systems Center
Keywords and Phrases
Energy Storage; Fluctuations; Hydroelectric Power Generation; Regulation; Renewable Energy Sources; Security; Stochastic Processes
International Standard Serial Number (ISSN)
Article - Journal
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01 Nov 2021