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a low-cost dynamic shadow detection system for site evaluation

Schwarzbözl, Peter and Gross, Vitalij and Quaschnig, Volker and Ahlbrink, Nils (2011) a low-cost dynamic shadow detection system for site evaluation. In: referiert. 17th SolarPACES 2011 Conference, 20.-23. Sept. 2011, Granada, Spain.

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Abstract

Partial shadowing caused by moving clouds results in spatially and timely alternating supply of direct irradiation to large solar collector fields with extensions of 1 km² and more. Fluctuating inhomogeneous irradiation may lead to harmful dynamic changes of load and temperature in various components of CSP plants. In order to avoid harmful wear and stress the power stations have to be shut down under these weather conditions and production capacity is lost. On the other hand, operation and control strategies for continuous plant operation can be developed with dynamic simulation when appropriate data is available. The paper gives an overview on existing cloud and shadow detection methods and presents a new system for dynamic cloud detection based on autonomous miniature light sensors. Performance analysis by simulation and laboratory experiment was done and showed the feasibility of the system. The cost of the system is estimated as about 10 k€, independent from the field size. The system is especially applicable for site evaluation as it is completely independent from other installations.

Item URL in elib:https://elib.dlr.de/83596/
Document Type:Conference or Workshop Item (Paper)
Title:a low-cost dynamic shadow detection system for site evaluation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwarzbözl, Peterpeter.schwarzboezl (at) dlr.deUNSPECIFIED
Gross, VitalijHTW University of Applied Sciences, BerlinUNSPECIFIED
Quaschnig, VolkerHTW University of Applied Sciences, BerlinUNSPECIFIED
Ahlbrink, Nilsnils.ahlbrink (at) dlr.deUNSPECIFIED
Date:2011
Journal or Publication Title:referiert
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:transient irradiation, cloud detection, partial shadowing, light sensor, dynamic simulation
Event Title:17th SolarPACES 2011 Conference
Event Location:Granada, Spain
Event Type:international Conference
Event Dates:20.-23. Sept. 2011
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Punktfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research
Deposited By: Uhlig, Tamara
Deposited On:29 Jul 2013 16:39
Last Modified:29 Jul 2013 16:39

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