The Experts below are selected from a list of 2406 Experts worldwide ranked by ideXlab platform
Reinhard Madlener - One of the best experts on this subject based on the ideXlab platform.
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economic merits of a state of the art concentrating solar power forecasting system for participation in the spanish electricity market
Solar Energy, 2013Co-Authors: Birk Kraas, Marion Schroedterhomscheidt, Reinhard MadlenerAbstract:Abstract Forecasts of power production are necessary for the electricity market participation of Concentrating Solar Power (CSP) Plants. Deviations from the production schedule may lead to penalty charges. Therefore, the accuracy of direct normal irradiance (DNI) forecasts is an important issue. This paper elaborates the mitigation impact on deviation penalties of an electricity production forecasting tool for the 50 MWel Parabolic Trough Plant Andasol 3 in Spain. Only few commercial DNI forecast schemes are available nowadays. One of them, based on a model output statistics (MOS) forecast for the period July 2007 to December 2009, is assessed and compared to the zero cost 2-day persistence approach, which assumes yesterday’s weather conditions and electricity generation also for the following day. The quality of the meteorological forecasts is analyzed both with forecast verification methods and from the perspective of a power Plant operator. Using MOS, penalties in the study period are reduced by 47.6% compared to the 2-day persistence case. Finally, typical error patterns of existing MOS forecasts and their financial impact are discussed. Overall, the paper aims at quantifying the economic value of nowadays readily available numerical weather prediction in this use case. A special feature of our study is its focus on a real market case and the use of real data, rather than following a purely academic approach, and thus to provide some new insights regarding the economic benefit of using and improving state-of-the-art forecasting techniques.
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economic assessment of a concentrating solar power forecasting system for participation in the spanish electricity market
2011Co-Authors: Birk Kraas, Marion Schroedterhomscheidt, Benedikt Pulvermuller, Reinhard MadlenerAbstract:Forecasts of power production are necessary for the electricity market participation of Concentrating Solar Power (CSP) Plants. Deviations from the production schedule may lead to penalty charges. the mitigation impact on deviation penalties of an electricity production forecasting tool for Therefore, the accuracy of direct normal irradiance (DNI) forecasts is an important issue. This paper elaborates the 50 MWel Parabolic Trough Plant Andasol 3 in Spain. A commercial DNI model output statistics (MOS) forecast for the period July 2007 to December 2009 is assessed and compared to the two-day persistence approach, which assumes yesterday’s weather conditions and electricity generation also for the following day. Forecasts are analyzed both with meteorological forecast verification methods and from the perspective of a power Plant operator. Using MOS, penalty charges in the study period are reduced by 47.6% compared to the persistence case. Finally, typical error patterns of DNI forecasts and their financial impact are discussed.
Birk Kraas - One of the best experts on this subject based on the ideXlab platform.
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economic merits of a state of the art concentrating solar power forecasting system for participation in the spanish electricity market
Solar Energy, 2013Co-Authors: Birk Kraas, Marion Schroedterhomscheidt, Reinhard MadlenerAbstract:Abstract Forecasts of power production are necessary for the electricity market participation of Concentrating Solar Power (CSP) Plants. Deviations from the production schedule may lead to penalty charges. Therefore, the accuracy of direct normal irradiance (DNI) forecasts is an important issue. This paper elaborates the mitigation impact on deviation penalties of an electricity production forecasting tool for the 50 MWel Parabolic Trough Plant Andasol 3 in Spain. Only few commercial DNI forecast schemes are available nowadays. One of them, based on a model output statistics (MOS) forecast for the period July 2007 to December 2009, is assessed and compared to the zero cost 2-day persistence approach, which assumes yesterday’s weather conditions and electricity generation also for the following day. The quality of the meteorological forecasts is analyzed both with forecast verification methods and from the perspective of a power Plant operator. Using MOS, penalties in the study period are reduced by 47.6% compared to the 2-day persistence case. Finally, typical error patterns of existing MOS forecasts and their financial impact are discussed. Overall, the paper aims at quantifying the economic value of nowadays readily available numerical weather prediction in this use case. A special feature of our study is its focus on a real market case and the use of real data, rather than following a purely academic approach, and thus to provide some new insights regarding the economic benefit of using and improving state-of-the-art forecasting techniques.
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economic assessment of a concentrating solar power forecasting system for participation in the spanish electricity market
2011Co-Authors: Birk Kraas, Marion Schroedterhomscheidt, Benedikt Pulvermuller, Reinhard MadlenerAbstract:Forecasts of power production are necessary for the electricity market participation of Concentrating Solar Power (CSP) Plants. Deviations from the production schedule may lead to penalty charges. the mitigation impact on deviation penalties of an electricity production forecasting tool for Therefore, the accuracy of direct normal irradiance (DNI) forecasts is an important issue. This paper elaborates the 50 MWel Parabolic Trough Plant Andasol 3 in Spain. A commercial DNI model output statistics (MOS) forecast for the period July 2007 to December 2009 is assessed and compared to the two-day persistence approach, which assumes yesterday’s weather conditions and electricity generation also for the following day. Forecasts are analyzed both with meteorological forecast verification methods and from the perspective of a power Plant operator. Using MOS, penalty charges in the study period are reduced by 47.6% compared to the persistence case. Finally, typical error patterns of DNI forecasts and their financial impact are discussed.
Ratson Morad - One of the best experts on this subject based on the ideXlab platform.
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spectrum splitting hybrid csp cpv solar energy system with standalone and Parabolic Trough Plant retrofit applications
SOLARPACES 2015: International Conference on Concentrating Solar Power and Chemical Energy Systems, 2016Co-Authors: Matthew Orosz, Nicolas Zweibaum, Tamir Lance, Maritza Ruiz, Ratson MoradAbstract:Sunlight to electricity efficiencies of Parabolic Trough Collector (PTC) Plants are typically on the order of 15%, while commercial solar Photovoltaic (PV) technologies routinely achieve efficiencies of greater than 20%, albeit with much higher conversion efficiencies of photons at the band gap. Hybridizing concentrating solar power and photovoltaic technologies can lead to higher aggregate efficiencies due to the matching of photons to the appropriate converter based on wavelength. This can be accomplished through spectral filtering whereby photons unusable or poorly utilitized by PV (IR and UV) are passed through to a heat collection element, while useful photons (VIS) are reflected onto a concentrating PV (CPV) receiver. The mechanical design and experimental validation of spectral splitting optics is described in conjunction with system level modeling and economic analysis. The implications of this architecture include higher efficiency, lower cost hybrid CSP-PV power systems, as well as the potential...
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spectrum splitting hybrid csp cpv solar energy system with standalone and Parabolic Trough Plant retrofit applications
SOLARPACES 2015: International Conference on Concentrating Solar Power and Chemical Energy Systems, 2016Co-Authors: Matthew Orosz, Nicolas Zweibaum, Tamir Lance, Maritza Ruiz, Ratson MoradAbstract:Sunlight to electricity efficiencies of Parabolic Trough Collector (PTC) Plants are typically on the order of 15%, while commercial solar Photovoltaic (PV) technologies routinely achieve efficiencies of greater than 20%, albeit with much higher conversion efficiencies of photons at the band gap. Hybridizing concentrating solar power and photovoltaic technologies can lead to higher aggregate efficiencies due to the matching of photons to the appropriate converter based on wavelength. This can be accomplished through spectral filtering whereby photons unusable or poorly utilitized by PV (IR and UV) are passed through to a heat collection element, while useful photons (VIS) are reflected onto a concentrating PV (CPV) receiver. The mechanical design and experimental validation of spectral splitting optics is described in conjunction with system level modeling and economic analysis. The implications of this architecture include higher efficiency, lower cost hybrid CSP-PV power systems, as well as the potential to retrofit existing PTC Plants to boost their output by ~ 10% at a projected investment cost of less than $1 per additional net Watt and an IRR of 18%, while preserving the dispatchability of the CSP Plant’s thermal energy storage.
A G Rossi - One of the best experts on this subject based on the ideXlab platform.
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dynamic simulation of the operation of a molten salt Parabolic Trough Plant comprising draining procedures
Energy Procedia, 2014Co-Authors: M Falchetta, A G RossiAbstract:Abstract The dynamic simulation of a molten salt operated Parabolic Trough Plant is presented. The simulated Plant is a typical 9 MWe CSP unit comprising 10 loops with 8 collectors in series (in turn this can be a “module” of a larger CSP solar field) a Two Tanks TES and a molten salt Steam Generator. This type of Plant represents a challenge due to the large extension and relative complication of piping network operating with molten salt, in comparison to e.g. a molten salt Tower. The simulation model, implemented in Isaac Dynamics environment, is able to represent the normal operation of the Plant with circulating HTF at variable mass flow depending on input DNI, and night circulation at reduced mass flow. In addition, in molten salt operated CSP Plants draining operations are of prominent importance, given that these operations should be operated within a due time (depending on boundary conditions) avoiding the possible freezing of the salt mixture. Moreover also emergency draining (e.g. as a consequence of faults in the pump and/or in heat trace equipment) should be analyzed. At this purpose, the model has been modified and utilized to represent also circuit draining, involving flow reversal, that normally requires use of specialized thermo-hydraulic codes like Relap (Reactor Loss of coolant Analysis Program). In conclusion, the paper shows how the simulation environment is able to represent most of the dynamics that affect the operation of a molten salt Parabolic Trough Plant.
Manuel Valdes - One of the best experts on this subject based on the ideXlab platform.
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solar multiple optimization for a solar only thermal power Plant using oil as heat transfer fluid in the Parabolic Trough collectors
Solar Energy, 2009Co-Authors: Maria Jose Montes, A Abanades, J M Martinezval, Manuel ValdesAbstract:Abstract Usual size of Parabolic Trough solar thermal Plants being built at present is approximately 50 MWe. Most of these Plants do not have a thermal storage system for maintaining the power block performance at nominal conditions during long non-insolation periods. Because of that, a proper solar field size, with respect to the electric nominal power, is a fundamental choice. A too large field will be partially useless under high solar irradiance values whereas a small field will mainly make the power block to work at part-load conditions. This paper presents an economic optimization of the solar multiple for a solar-only Parabolic Trough Plant, using neither hybridization nor thermal storage. Five Parabolic Trough Plants have been considered, with the same parameters in the power block but different solar field sizes. Thermal performance for each solar power Plant has been featured, both at nominal and part-load conditions. This characterization has been applied to perform a simulation in order to calculate the annual electricity produced by each of these Plants. Once annual electric energy generation is known, levelized cost of energy (LCOE) for each Plant is calculated, yielding a minimum LCOE value for a certain solar multiple value within the range considered.
