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Study Data from University of Virginia Update Understanding of Energy

Energy Daily News

2019 AUG 16 (NewsRx) -- By a News Reporter-Staff News Editor at Energy Daily News -- Current study results on Energy have been published. According to news reporting originating in Charlottesville, United States, by NewsRx journalists, research stated, “Solar photovoltaic power generation capacity is growing rapidly, increasing the need for dynamic load balancing when solar production dips. This balancing might be delivered using energy storage and/or advanced power generation cycles, that are compact, dynamic, and highly efficient, such as supercritical carbon dioxide (sCO(2)) cycles.”

Financial support for this research came from Rotating Machinery and Controls Laboratory at the University of Virginia.

The news reporters obtained a quote from the research from the University of Virginia, “Here, the load balancing capability of a sCO(2) combined cycle plant was compared to open cycle and steam combined cycle gas turbines. A characteristic-based transient model was developed to evaluate the impact of machinery ramp rates, minimum part loads, and cycle efficiencies. High resolution demand and solar irradiance data from the University of Virginia campus, before and after installation of a major solar project, was used to represent low and high levels of solar deployment in the grid. The results suggest that under high deployment of solar power, sCO(2) cycles and steam combined cycle systems with ramp rates greater than 5.75%/minute can balance load and provide comparable levelized costs of electricity ($0.057/1(Wh). Solar curtailment was driven by the minimum part load capabilities.”

According to the news reporters, the research concluded: “A sCO(2) cycle with a minimum part load of 30% was predicted to have a curtailment of 15% in the high solar scenario without a battery, and 4% with a 30 MWh battery.”

For more information on this research see: Feasibility of Using Sco(2) Turbines To Balance Load In Power Grids With a High Deployment of Solar Generation. Energy, 2019;181():548-560. Energy can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier -; Energy -

Our news correspondents report that additional information may be obtained by contacting A.F. Clarens, University of Virginia, Dept Engn Syst & Environm, Charlottesville, VA 22903, United States. Additional authors for this research include J.A. Bennett, J. Fuhrman, T. Brown, R. Fittro and N. Andrews.

The direct object identifier (DOI) for that additional information is: This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.


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