Using Energy Storage to Manage High Net Load Variability at Sub-Hourly Time-Scales

High net load variability, driven by high penetrations of wind and solar generation, will create challenges for system operators in the future, as installed wind generation capacities increase to unprecedented levels globally. Maintaining system reliability, particularly at shorter time-scales, lead...

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Bibliographic Details
Published in:IEEE transactions on power systems 2015-07, Vol.30 (4), p.2139-2148
Main Authors: O'Dwyer, Ciara, Flynn, Damian
Format: Article
Language:English
Subjects:
Battery storage plants
Energy resolution
Energy storage
Generators
Load modeling
power system simulation
pumped storage power generation
Uncertainty
wind energy
Wind forecasting
Wind power generation
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Summary:High net load variability, driven by high penetrations of wind and solar generation, will create challenges for system operators in the future, as installed wind generation capacities increase to unprecedented levels globally. Maintaining system reliability, particularly at shorter time-scales, leads to increased levels of conventional plant starts and ramping, and higher levels of wind curtailment, with sub-hourly unit commitment and economic dispatch required to capture the increased cycling burden. The role of energy storage in reducing operating costs and enhancing system flexibility is explored, with key storage plant characteristics for balancing at this time-scale identified and discussed in relation to existing and emerging grid-scale storage technologies. Unit dispatches for the additional storage plant with varying characteristics highlight the unsuitability of energy only markets in incen-tivizing suitable levels of flexibility for future systems with high net load variability.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2014.2356232