9/2008 CIMO Higher Education in Finland Juha Ketolainen CIMO 25.9.2008 “Tea Team” Joensuu.
SwissMetNet - Meteometeorology.meteo.bg/wp1.pdf · 2 SwissMetNet Icing on structures: ... ¾decided...
Transcript of SwissMetNet - Meteometeorology.meteo.bg/wp1.pdf · 2 SwissMetNet Icing on structures: ... ¾decided...
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SwissMetNet
Measurements under harsh conditions:
COST-727 « Icing on Structures »The Swiss national project
Alain HeimoFederal Office for Meteorology and Climatology, MeteoSwiss
CH-1530 Payerne, Switzerland
Stefan KunzMeteotest
CH-3012 Bern, Switzerland
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Icing on structures:
Fields of application:1) Meteorological measurements
• Meteorology / Climatology• Forecasting
2) Wind energy (turbines)• Power up/down• Heating (blades)
3) Road and airport safety• Forecasting (now-casting)• Alarms• Road and runway maintenance
4) Power lines• Power up/down• Design
5) Others (e.g. railways, telecommunication, etc.)
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Recent activities
WMO/CIMO Wind Instrument Intercomparison
Mont Aigoual, France, 1992-1993
- Organization: France & Switzerland, sponsored by WMO- 11 participating countries- 26 wind instruments tested
• rotating anemometers with a wind vane• hot wire / hot film wind sensors• Pitot-tube wind sensors• Ultrasonic wind sensors• 3D propeller anemometer
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Recent activities
EUMETNET SWS-II (2000-2003)Goal: acquisition of meteorological data under harsh weather conditions
Participation:• Finland (Luosto)• France (Mt. Aigoual)• Switzerland (Säntis)
Measurement period: 1.10.2001 to 30.4.2002
Results:• Preliminary results presented: EUMETNET-WS Trappes (2001)• Presentation at WMO/CIMO/TECO Conference, 09.2002• EUMETNET final report -> February 2003
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Recent activities
EUMETNET SWS-II (2000-2003)Conclusions and recommendations:
…. Already during the installation and test period proceeding the experiment, it was quickly recognized that the lack of adequate instruments for the characterization of ice accretion would represent a serious drawback for the whole experiment.
…. the WMO/CIMO guidelines … it is important that more care is given within the meteorological community to produce accurate measurements under harsh conditions and to promote measurements of icing.
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Recent activities
World Meteorological Organization (WMO)Commission for Instruments and Methods of Observation (CIMO)
Reference: Guide to Meteorological Instruments and Methods of Observations “CIMO Guide No 8”-> specifications for performing various measurement at manned synoptic as well as automatic weather stations-> only scarce information concerning guidance for measurements under harsh icing condition.
Recommendation from EUMETNET/SWS II report -> CIMO Expert Team on Surface Technology and Measurement Techniques (meeting 13-16.10.2004, Geneva)
noted this lack of information and the above mentioned recommendationdecided to extend the WMO/CIMO Guide with a chapter dealing with
measurements under harsh conditions, including mountain-arctic, desert, tropical, marine and urban environments.
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Test stations PAY and GUEProject SwissMetNet
Full renewal of the Swiss meteorological networks
Goals of the test stations:
-Test all new equipments or instruments under normal (PAY) and harsh (GUE) conditions before integration in the official network.
- Test new algorithms based on sets of instruments (e.g. cloud observation with ceilometer - and/or IR - and/or cloud radar - and/or µwave – information)
- Provide infrastructure facility for participation in international measurements experiments (e.g. COST, EUMETNET, EU, etc.).
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COST-727 Action: “Icing on Structures”
WG 2
WG 1
WG 3
Sensor Technology
MeteorologigalMeasurements
Input
MODEL
Output
Application
ForecastingDesign Ice Loadson Structures
Power Losses ofWind Turbines
IcingMeasurements
COST 727
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Swiss contribution to WG2: Goals
COST-727 project: Icing Monitoring at SMN test station Guetsch:
Perform icing measurements with different available icing sensorswinter 2005/2006: test operationwinter 2006/2007: international comparison (with ISO reference)
Develop an icing reference instrumentDevelop an ISO-12494 compatible sensorPerform tests to qualify performances
Perform meteorological measurements for the monitoring of the nearby wind power generator operated by EWUDevelop tools and recommendations for evaluating icing conditions at standard meteorological stations NOT equipped with ice detectorsSet-up recommendations to fulfil the requirements of the industry (traffic, power transmission, wind energy) for icing conditions.
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Swiss contribution to WG2: Partners
MeteoSwiss A. Heimo Project Leader
METEOTEST S. Kunz Project Management & Coordination
Project Partner: On site logistics GuetschOwner of Wind Turbine on Guetsch
BFE / SFOE Swiss Federal Office of Energy
M. GeissmannR. Horbaty ENCO
Project support: Wind Energy
Swisscom Broadcast Bernhard SchmidPaul Schneeberger
Project support
Project Partner: Instrument development
Project Partner: Instrument development
Kelag K. Künzli Project Partner: Instrument test
Elektrizitätswerk Ursen M. Russi
Boschung Mecatronic AG P.-A. Brodard
Markasub AG M. Kaspar
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SwissMetNetSwiss contribution to WG2:
Interested parties
Haute Ecole ValaisanneHEVS
J. Moerschell Project Partner: Industrial development
EEF – EOS M. Ammann Project support: Power lines application
SBB/CFF D. Gerber Project support: rail tracks safety
OFAC/BAZL R. Aebersold Project support: runways safety
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Available icing sensors
Instruments Working Principle Output Available
YES/NO
Duration of icing
Mass of ice accumulated
YES/NO
Amount of ice accretion in Kg
Amount of ice accretion in Kg
Potential Icing
Thickness standardized
ICEMETER Weight no
HoloOptics T23 IR emitter-detector no
Labko LID-3503 Ultrasonic resonance no
Rosemount/Goodrich ice detector 0872J
Vibrating rod- Frequency measurement
Yes, not yet installed
-Aerotech Telub (ISO 12494; prototype?)
Freely rotating rod –automatic weighting no
FMI development (ISO 12494)
Motorized rotating rod –manual weighting
In preparation
Meteorological standard measurements
Temperature < 0°CHumidity > 95%
Installed
Video cameras Visual estimation Installed
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Guetsch test station
Measurements configurationStandard measurements:
Wind speed and direction (3D)PressureTemperature (T + Tdew) & RH%Short wave down-welling irradianceShort wave reflected irradianceLong wave down-welling irradianceLuminositySunshine durationRain detectionRain amountSnow-height, -temperature, -surface temperatureRadioactivityControl camera
Special measurements:
Cloud base (ceilometer)Precipitation characteristics (disdrometer)Present weather (2x)Rain amount (weighting principle)Ice detection (Vibrometer prototype)Ice detector (2xRosemount)Other instruments for COST-727
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Guetsch – wind energy programme
Measuring campaign Monitoring programme on existing wind turbine
Verification of IEA recommendations
International Energy Association IEA Annex XIX for wind energyin cold climate
Optimization of wind turbine Adaption of wind turbine controlprogramme to site specificrequirements
Monitoring of ice throw Systematic observations of iceparticles fallen from wind turbine
Handbook on operation of wind turbines in alpine space
Special emphasis on icing(modelling, forecast, prevention)
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The Enercon E 40 wind turbine
Rated power 600 kW
Rotor diameter 40m
Tower heigth 46m
Blade heating Hot air
Annual productionapprox.
800 MWh
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Wind Turbine Monitoring
Ice throw optical Specialist from EWU controls area below wind turbine after each icing event
Blade heating Hot air Hot air circulates in wind turbine blades in icing situations (detected by power loss of turbine)
1st provisory installation in dec. 2005, pointing to blades
Camera on hub rotating Special device A special camera device rotating with blades, mounted in hub, campaigns 2006-2008
Visibility Camera, sensors Visibility check by MeteoSwiss camera pointing towards wind turbineIf possible (technically, financially) additionalLWC and avg droplet size measurements
Camera on nacelle webcam
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Ice throw monitoring
Monitoring kit
Ice from wind turbine (Nov. 05)
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mounting places for sensors
Inside hub forrotating camera
Support on nacelle for fix webcam
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camera on wind turbine
View of camera on blade (planned)
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Conclusion
Recent activities:
• International instruments’ intercomparisons under harsh conditions• Recommendations to the WMO/CIMO concerning measurements under icing
condition
Future Tasks:
-> COST-727 Action provides a good opportunity toa) Develop a certified reference instrumentb) Perform instruments comparisonc) Establish guidance for measurements at stations equipped
or not with ice detectorsd) Develop synergies between the industry and the
meteorological communities
-> extension of the WMO/CIMO Guide with a chapter dedicated to measurements under harsh condition, including icing, to provide guidance to perform such measurements
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SwissMetNet: installation procedures1. Site visit # 1: meteorological & technical visit (KD & TM)
REKO Bericht-> OCMD -> Selection of final site and configurationStart of administrative procedures
2. Site visit # 2: detailed technical visit (BBL, TM)Final plansOkay from REKO Team, KD and TMFinal administrative procedures
3. Construction (with/without mobile station)Mise en route (TM)
4. « Abnahme » BBLReporting & data evaluation (technical)
5. « Abnahme » TMReporting & data evaluation (technical, Data Mart)
6. « Abnahme » KDReporting & data evaluation (meteorology)
7. Station officially operational
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SwissMetNet: SDM status 11/2005
Installations (26):
Official MCH station (11):Plaffeien, Evolène, Wynau, Glarus, Zermatt, Grand-St.-BernardSäntis, Aigle, Guetsch, La chaux-de-Fonds, Changins
Operational stations (10):Payerne test, Guetsch testPayerne, Sion, Berne, La Fretaz, Magadino-Cadenazzo (Nabel), Samedan, Scuol, San Bernardino
Stations in construction (3):Interlaken (S2), Pully (S2), Fahy-Boncourt
Next stations in 2005 (2)Lugano, Vaduz