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Sonic vs. Cup/Vane Data Comparison at the Cooper Nuclear Station

Sonic vs. Cup/Vane Data Comparison at the Cooper Nuclear Station. Jim Holian SAIC. NUMUG Meeting St. Louis, MO October 2006. CNS Meteorological System. Upgraded 100-meter tower in 2004 to include a dual elevator on the same tower face

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Sonic vs. Cup/Vane Data Comparison at the Cooper Nuclear Station

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  1. Sonic vs. Cup/Vane Data Comparison at the Cooper Nuclear Station Jim Holian SAIC NUMUG Meeting St. Louis, MO October 2006

  2. CNS Meteorological System • Upgraded 100-meter tower in 2004 to include a dual elevator on the same tower face • Dual monitoring systems with independence from sensor to Plant Computer • Wind Sensors have Cups/Vanes on one side and Sonic on the other

  3. Meteorological Parameters Systems A and B • 10, 60, and 100 meter wind speed and direction • 3 Delta-ts (60m-10m, 100m-10m, 100m-60m) • 10, 60, and 100 meter temperatures System A only • 10 meter dew point • Station Pressure • Precipitation

  4. Meteorological Equipment System A • Climatronics F460 Wind speed and Direction Sensors • Climatronics Temperature Sensors • Tower Systems Elevator • Climatronics Dew Point Sensor • Climatronics Tipping Bucket Rain gauge with Wind Shield • Campbell Scientific 23X Micro Dataloggers • Climatronics Pressure Sensor

  5. Meteorological Equipment System B • Met One 50.5 Sonic Wind speed and Direction Sensors • Climatronics Temperature Sensors • Tower Systems Elevator • Campbell Scientific 23X Micro Dataloggers

  6. Purpose • Independently verify wind data collected from both systems are not statistically different • Data from System A (cup/vane) can be interchanged with data from System B (sonic) • Demonstrate the impact of the tower structure on meteorological data

  7. Data Set • One year of onsite validated hourly meteorological data (October 31, 2004 – October 30, 2005) • 8784 possible hourly values for each parameter for both Systems A and B on the 100-meter tower

  8. Methodology • Remove bad data from System A and System B files including calibrations, frozen sensors, failed sensors, bad data spikes, etc • Remove wind directions when wind speeds less than 3 mph and/or wind directions are through tower • Remove wind speeds when wind directions are through tower

  9. Table 3–1 Invalid Data for CNS Onsite Meteorological ProgramOctober 31, 2004 – October 30, 2005

  10. Wind Directions from 195-245 degrees blow through tower • Window is 25 degrees for vane and cup sensors and 30 degrees for sonic sensor

  11. Data Availability • 100- meter wind speed 82% • 60-meter wind speed 87% • 10-meter wind speed 88% • 100-meter wind direction 84% • 60-meter wind direction 45% • 10-meter wind direction 70%

  12. Results Unobstructed with no tower influence

  13. Wind Speed Averages

  14. Wind Speed Correlation

  15. Wind Direction Averages

  16. Wind Direction Correlation

  17. Tower Impacts Wind Speed and Direction

  18. Wind Directions from 195-245 degrees blow through tower • Window is 25 degrees for vane and cup sensors and 30 degrees for sonic sensor

  19. 100-m Wind Speed AveragesTower Impact

  20. 100-m Wind Speed Correlation Tower Impact

  21. 60-m Wind Speed AveragesTower Impact

  22. 60-m Wind Speed CorrelationTower Impact

  23. 10-m Wind Speed AveragesTower Impact

  24. 10-m Wind Speed CorrelationTower Impact

  25. 100-m Wind Direction AveragesTower Impact

  26. 100-m Wind Direction CorrelationTower Impact

  27. 10-m Wind Direction AveragesTower Impact

  28. 10-m Wind Direction CorrelationTower Impact

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