Statistical Characterization of Solar Photovoltaic Power Variability at Small Timescales: Preprint
Conference
·
OSTI ID:1051153
Integrating large amounts of variable and uncertain solar photovoltaic power into the electricity grid is a growing concern for power system operators in a number of different regions. Power system operators typically accommodate variability, whether from load, wind, or solar, by carrying reserves that can quickly change their output to match the changes in the solar resource. At timescales inthe seconds-to-minutes range, this is known as regulation reserve. Previous studies have shown that increasing the geographic diversity of solar resources can reduce the short term-variability of the power output. As the price of solar has decreased, the emergence of very large PV plants (greater than 10 MW) has become more common. These plants present an interesting case because they are largeenough to exhibit some spatial smoothing by themselves. This work examines the variability of solar PV output among different arrays in a large (50 MW) PV plant in the western United States, including the correlation in power output changes between different arrays, as well as the aggregated plant output, at timescales ranging from one second to five minutes.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
- DOE Contract Number:
- AC36-08GO28308;
- OSTI ID:
- 1051153
- Report Number(s):
- NREL/CP-5500-56165
- Conference Information:
- Presented at the 2nd Annual International Workshop on Integration of Solar Power into Power Systems Conference, 12-13 November 2012, Lisbon, Portugal; NREL (National Renewable Energy Laboratory)
- Country of Publication:
- United States
- Language:
- English
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