OFICIAL INAUGURATION METAS AND DUKE€¦ · – METAS has to be founded with external budget What...
Transcript of OFICIAL INAUGURATION METAS AND DUKE€¦ · – METAS has to be founded with external budget What...
OFICIAL INAUGURATION METAS AND DUKEAlmería 6 June, 2013
Dr. Lourdes Ramírez Santigosa Mr. Stefan WilbertDivisión de Energías Renovables. Institute of Solar Research
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CONTENT
• INTRODUCTION• MAIN TOPICS DRIVEN BY CIEMAT• MAIN TOPICS DRIVEN BY DLR• OVERVIEW AND OUTLOOK
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INTRODUCCTION
METAS is an installation:– In METAS are included most of the DLR (Institute of Solar Research) and
CIEMAT (Solar Radiation Group) equipment related to solar radiation assessment.
METAS is a joint research group:– METAS has de intention of increase the collaboration in projects of both
research groups.
METAS is an agreement:– In METAS, both institution share the measured data
METAS is a project:– METAS has to be founded with external budget
What is METAS
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Satellite/modeled data
Standardization
calibration
Instrument characterization
Circumsolar‐radiation
Nowcasting & irradiance grid
Beam attenuation in tower plants
Solar radiationmeasurements
METAS – overview
Solar Technology
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INTRODUCTION
DLRInstitute of solar research
CIEMATRenewable Energy Division
CIEMATPSA Division
Qualification DepartmentStefan WilbertFabian WolfertstetterNatalie HanriederBijan NouriNicole Janottte
Solar Radiation GroupLourdes RamírezLuis F. ZarzalejoRita X. ValenzuelaJesús PoloAna A. NavarroJose M. Vindel
PSA StaffAntonio CamposGinés GarcíaJosé Liria
Who is METAS
DLRInstitute of Solar Research
CIEMATRenewable Energy Division
CIEMATPSA Division
Line Focusing Systems PSA maintenance staffCSP Unit
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Since 1988 different meteo stations (from CIEMAT but also from DLR) have been operated at PSA in order to include new instrumentation to improve the solar radiation knowledge for solving new CSP needs.
INTRODUCTION
BEFORE 2012
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Collaboration in IEA Joint Task:
• Solarpaces Agreement Task 5
• SH&C Agreement Task 46
INTRODUCCTION
BEFORE 2012
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SFERA II(In negotiation phase)
Calibration of solar sensors.
FP7 Project DNICast(In negotiation phase)
Stefan Wilbert Scientific coordination.
2012
INTRODUCCTION
Picture Norbert Geuder (CSPS)
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INTRODUCCTION
OCT 2012 COLLABORATION AGREEMENT
1. Coordinating the use of measuring equipment included in METAS installation.
2. Production of reference meteorological datasets. a) Analysis of spatial variation of DNI.b) Creation of Typical Meteorological Years (TMY) and/or Representative
Radiation Years (ASR), etc. c) Standardization and integrating procedures for data bankability, data
quality control and treatment, integration of data sources, and evaluation of meteorological parameters.
3. Pyranometer and pyrheliometer calibration with absolute cavity radiometers (ACRs) following international standards.
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CONTENT
• INTRODUCTION• MAIN TOPICS DRIVEN BY CIEMAT• MAIN TOPICS DRIVEN BY DLR• OVERVIEW AND OUTLOOK
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Solar radiation measurements
BASELINE SOLAR RADIATION NETWORK since October 2005
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Solar radiation measurements
Web access to the recorded data
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Arquitecture of systems and comunications
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Web portal and data bases
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Satellite/modeled data
Global model (GSat2Rad)
Integration of data sources
Validation and uncertainty
Spatial distribution of solar radiation
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Satellite/modeled data
Spatial distribution of solar radiation
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Satellite/modeled data
Spatial distribution of solar radiation
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http://www.adrase.ciemat.es/
Satellite/modeled data
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http://www.adrase.ciemat.es/
Satellite/modeled data
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Configuration and optimization of measurement stations for the characterization of solar radiation at specific sites
• Location of stations• Data acquisition systems and
communication elements• Station configuration• Selection of instrumentation
depending on the application
Solar radiation measurement stations
Standardization
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Standardization
A manual on best practices for the provision of “bankable” datasets of measured data for concentrating solar power projects for investors, financial and governmental institutions will
RSI specific manual
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Standardization
• quality control records• generating series (TMY, SRY)• series analysis
• probability functions• trends …
Solar radiation data treatment
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Calibration
Traceable to the World Radiation Reference (World Standard Group)
PYRHELIOMETERSISO 9059: 1990. Calibration of field pyrheliometers by comparison to a reference pyrheliometer.
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Calibration
pyranometer
ISO 9846: 1993. Calibration of a pyranometer using a pyrheliometer. Establishes two calibration methods• Alternating sun and shade• Continuous sun
ISO 9847: 1992. Calibration of field pyranometers by comparison to a reference pyranometer.Establishes two calibration methods• Calibration inside• Outside calibration
– Stable conditions of clear sky– Unstable conditions sky with some clouds– Overcast conditions
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Calibration
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CONTENT
• INTRODUCTION• MAIN TOPICS DRIVEN BY CIEMAT• MAIN TOPICS DRIVEN BY DLR• OVERVIEW AND OUTLOOK
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Rotating Shadowband Irradiometers (RSIs)
• Robust instrument used for solar resource assessment at remote sites
• Characterization, further improvements & calibration
globalirradiance
diffuseirradiance
DNI (Direct Normal Irradiance)
Principle of operation1. Pyranometer measures global irradiance2. Shadowband rotates once per minute3. During rotation: measure the diffuse irradiance→ DNI is calculated
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Circumsolar radiation
disk radiation
• Circumsolar radiation is forward scattered solar radiation
• Concentrating collectors use:nearly the complete disk radiation
+
a smaller fraction of the circumsolar radiation
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Measurement of circumsolar radiation
‐ SAM (Sun & Aureole Measurement), sun photometer & software‐ autonomous measurements‐ additional determination of aerosol & cloud properties
‐ master‐system running at PSA‐ 2 replicas: CNRS/Odeillo (France), Masdar Institute (United Arab Emirates)
‐ Sun photometer part of measurement network AERONET
1SAM sun photometer
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AERONET sun photometer
‐ PSA station is part of NASA’s AERONET since 2011 ‐ reference for satellite based aerosol measurements‐ input for DNI modeling
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Beam attenuation in tower plants
Depending on the atmospheric conditions the reflected radiation is attenuated noticeably on its way to the tower. Influence on output and design of tower plants (field size)
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How can we measure and model the attenuation?How does the attenuation vary with time and climate?
Visibility sensors(Scattermeters)
TransmissometersAerosol
particle counter+
radiative transfer model
DNI measurementson the ground
andon the tower
Beam attenuation in solar tower plants
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Beam attenuation in tower plants & cloud effects
LIDAR: LIght Detection And Ranging
• Aerosol height profile
• Cloud height & cloud properties
→ par al shading of CSPcollector fields
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Partial shading and nowcasting of DNI
• Especially relevant for Direct Solar Steam technology → DUKE• Provide spatially & temporally resolved DNI data for CSP simulation &
operation.• Develop nowcasting (short term prediction) of DNI maps for the operation.
Andasol parabolic trough plants
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Cloud height from LIDARs
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Cloud camera based DNI nowcasting
• determine the cloud position using photogrammetry • follow & predict cloud movement from picture series
4 cameras
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CONTENT
• INTRODUCTION• CIEMAT DRIVEN TOPICS• DLR DRIVEN TOPICS• OVERVIEW & OUTLOOK
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Satellite/modeled data
Standardization
Pyranometer & pyrheliometercalibration
Instrument characterization
Circumsolar radiation
Beam attenuation in tower plants
Nowcasting & irradiance grid
BSRN
METAS – overview & outlook
Solar TechnologyNew topics…
Thank you for your attention!
Thanks specially tothe project members the PSA maintenance staff the DUKE colleaguesNorbert Geuder (CSPS)
Partially funded by: EU‐FP7 (SFERA), German Foreign Office (enerMENA)