Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE

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Eidgenössisches Departement für Umwelt, Verkehr, Energie und Kommunikation UVEK Bundesamt für Energie BFE IEA SHC TASK 36: SOLAR RESOURCE KNOWLEDGE MANAGEMENT GLOBAL RADIATION AND PV PRODUCTION FORECAST Annual Report 2008 Author and Co-Authors Jan Remund Institution / Company Meteotest Address Fabrikstrasse 14, 3012 Bern Telephone, E-mail, Homepage +41 (0) 31 307 26 26, remund@meteotest.ch, www.meteotest.ch Project- / Contract Number 101498 / 151784 Duration of the Project (from – to) July 2005 – June 2010 Date 12.12.2008 ABSTRACT In the framework of IEA Solar Heating and Cooling (SHC) Task 36 Meteotest investigates mainly the possibilities and quality of global radiation forecast. In the third year the validation of the global radiation forecast of Meteotest’s new operational WRF (Weather research and forecasting) model was started. For three sites in the USA the model was compared to measurements and to 2 other models (ECMWF, NDFD). The uncertainty of WRF (Weather research and forecasting) model was somewhat higher than ECMWF (European Centre for Medium-Range Weather Forecasts) and NDFD (National digital forecast database) and highly dependent on the region. The uncertainty lies between 18-50% for hourly values. The breakeven of persistence is reached after 2-4 hours. In autumn a detailed benchmark for Alpine region has been started. The results will be available in summer 2009. The solar radiation forecast has been coupled with the PV yield control tool spyce. Like this the PV production for the next two days is available for sites in Europe. 271/290
Introduction In the framework of IEA Solar Heating and Cooling (SHC) Task 36 “Solar Resource Knowledge Management” [1] Meteotest investigates mainly the possibilities and quality of global radiation forecast. The Task 36 is divided into 3 main subtasks: a) Standard qualification for solar resource products (includes benchmarking of different radiation estimation models based on satellite measurements). b) Common structure for archiving and accessing solar resource products (includes prototype of online tool for accessing data). c) Improved techniques for solar resource characterization and forecast; improve satellite retrieval methods for solar radiation products; conduct climatological analysis of solar resources. The aim in the radiation forecast subtask is to define the quality of the existing models and to enhance the quality. A further aim is also to check the quality of forecasted PV production data. Main partners in this subtask are University Oldenburg and New York State University at Albany. Additionally Meteotest did some work within part c), where a new turbidity climatology was made. Work done and first results RADIATION FORECAST Models and data In 2008 a benchmark of three forecast models (ECMWF, NDFD and GFS/WRF) (Tab. 1) was made for three sites within the USA (Tab. 2) [2]. Table 1: Team members and their used model Team Output parameter used Resolution Model New York State Univ. Albany, ASRC, USA Univ. Oldenburg EHF, Germany Cloud cover statistical model for GHI 3 h time resolution Direct model output GHI (3 h time resolution enhanced to 1 h resolution) Meteotest, Switzerland Direct model output GHI 1 h time resolution NDFD: National digital forecast database ECMWF: European Centre for Medium-Range Weather Forecasts GFS: Global Forecast System WRF: Weather research and forecasting 9 km NDFD [3] 25 km ECMWF [4] 11 km GFS/ WRF [5] The NDFD data were based on a combination of GFS model, local area models and local human input (regional weather offices within USA). For GFS/WRF the global radiation of the nearest grid point based on Dudhia radiation code was used. The GFS data (1°) were upscaled with two nestings at 33 and 11 km. At present we focus our attention on the global irradiance component with forecast ranges of up to up to 60 hours. The data has been compared to three sites of BSRN/SURFRAD network (Tab. 2). Solar Resource Management, J. Remund, Meteotest 272/290 2/5
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Forschung, April 2009 Programm Phot
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Programm Photovoltaik Ausgabe 2009
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B. Ruhstaller, R. Häusermann, N. A
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PROGRAMM PHOTOVOLTAIK Eidgenössisc
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1. Programmschwerpunkte und anvisie
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Eine zweite Kategorie von Projekten
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Im Integrierten EU-Projekt ATHLET [
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Figur 3: Prototyp eines monolithisc
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SOLARMODULE UND GEBÄUDEINTEGRATION
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BEGLEITENDE THEMEN Das PSI beteilig
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Programme abgeschlossen. Die erste
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Messkampagnen - Messkampagne Wittig
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zielführend eingesetzt werden. Das
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[43] P. Renaud, L. Perret, (pierre.
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11. Verwendete Abkürzungen (inkl.
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D. Güttler, S. Bücheler, S. Seyrl
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Goals of the project The global pro
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1.2. Comparison of ZnO and SiOx int
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2. Processes 2.1. Microcrystalline
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EQE 1.0 0.8 0.6 0.4 0.2 12.4 11.7 1
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4.7 Summary and perspectives for wo
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Acknowledgements We thank all the P
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Eidgenössisches Departement für U
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Introduction / Project goals The fo
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Optimization of CdS chemical bath d
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Introduction / project objectives T
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Optimum Na dosage Sodium layer with
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application might become more impor
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Work progress and achievements duri
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Main achievements - The association
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Introduction Dye-sensitized solar c
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3/5 Tasks of the collaboration part
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Project Goals The goal is the estab
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Evaluation 2008 and Outlook 2009 L'
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Project Goals NAPOLYDE industrials
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� Organic large solar panel and
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Materials such as the conductive ca
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National and international collabor
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Introduction / Project Goals The co
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Fig. 4. Schematic illustration of a
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THINPV Eidgenössisches Departement
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PECNET Eidgenössisches Departement
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Module und Gebäudeintegration T. S
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Systemtechnik D. Chianese, N. Cereg
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TEST cycle 11 In 2008 a new 15 mont
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Evaluation 2008 and prospects for 2
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formed with two standard halogen la
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3. Modelling and analysis (SP4) 3.1
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Figure 3 shows a summary of the RR
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Projektziele für 2008 � Fortfüh
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Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE

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