Title :
Dynamic optimization of a solar thermal energy storage system over a 24 hour period using weather forecasts
Author :
Powell, Kody M. ; Hedengren, John D. ; Edgar, Thomas F.
Author_Institution :
Chem. Eng. Dept., Univ. of Texas, Austin, TX, USA
Abstract :
A solar thermal power plant is used as a case study for dynamic heat integration with thermal energy storage. Findings show that thermal energy storage gives the system the ability to make the power dispatchable. Additionally, by solving a 24-hour dynamic optimization problem where the plant temperatures and power output are variable allows the system to capture and harvest a higher percentage of solar energy, with the most benefit occurring on mostly cloudy days. The solar energy captured increases 64% from 4.75 MWh to 7.80 MWh using this scheme. Hybrid plant operation and the ability to bypass the storage tanks further improve the system performance.
Keywords :
hybrid power systems; power generation dispatch; solar power stations; thermal energy storage; thermal power stations; weather forecasting; dispatchable power; dynamic heat integration; dynamic optimization; hybrid plant operation; solar thermal energy storage system; solar thermal power plant; storage tank; time 24 hour; weather forecasting; Energy storage; Fluids; Mathematical model; Optimization; Power generation; Solar energy; Temperature control;
Conference_Titel :
American Control Conference (ACC), 2013
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-0177-7
DOI :
10.1109/ACC.2013.6580282