Importing Mast Data

Before you deal with mast data, import the data into project in Greenwich.

  1. Select a project name in the project pane.
  2. Click the Import/Export icon to open the Import/Export page.
  3. On the Create page, select the category as Met mast. The mast data import window opens.
  4. Click the Upload button to open the file selection dialog and select a mast data file.

    The file format of mast data file are RWD, NDF, txt, tab, and tim. The differences among these formats lie on the data recording format. The details are shown in the table below:

    RWD It is the original file exported by NRG in binary system. It is only applicable in mast data import, and you can set a password to it.
    NDF It is the original file exported by Nomad in binary system. It is only applicable in mast data import.
    txt This is a text file viewable and editable in TXT editor. Files in the dat and eol format are similar as txt.
    tab Record wind speed frequency base on sectors.
    tim Record the wind speed time series for later calculation.
  5. Click the Open button to start upload.
    You can select more than one files at a time.

    Check the upload progress in the list at the bottom of this page.

  6. Click a row to see the sensor configuration information after the upload is completed.
    Table 1. Sensor Configuration Parameter Introduction
    Name Description
    Channel ID This column is only visible on the txt file import page. Normally, the channel ID in the mast data file is loaded into this table automatically. If the format in the file is not standard, the ID might not be recognized. You will need to modify it in the file.
    Customized name This column is only visible on the txt file import page. Normally, the customized name in the mast data file is loaded into this table automatically. If the format in the file is not standard, the name might not be recognized. You will need to modify it in the file.
    Sensor type This item is mandatory. Normally, the sensor type marked in the mast data file is loaded into this table automatically. If the format in the file is not standard, the sensor type might not be recognized. You will need to select one manually. Sensor consist of the following types:
    By height This item is mandatory. Normally, the sensor height in the mast data file is loaded into this table automatically. If the format in the file is not standard, the sensor height might not be recognized. You will need to input the value manually.
    Data type This column is only visible on the txt file import page. Include Avg, SD, Max and Min.
    Scale

    It is a variate to calculate the linear relation between wind speed and anemometer rotate frequency. Data are loaded from the file automatically.
    Offset It is a parameter to calculate the linear relation between wind speed and anemometer rotate frequency. Data are loaded from the file automatically.
    Unit Unit of the data collected by mast. For different sensor types, the units are different.
  7. Verify sensor configuration according to sensor standardization report.
  8. Click OK to generate a mast in the project pane.

    For imported mast file in the RWD format, before you click OK, input the password if you have set one.

    If the sensor configuration changes, the confirmation dialog opens to confirm treatment on the modification, and then the generation continues.

    The newly created mast is in the project pane.

  9. Check this mast to show its location in GIS.
  10. Click the mast and open the Property pane.
  11. Click the Check Channel Info button to check the recommended mast configurations.

  12. Double-click the mast in the Project pane to open the DataTrace page for mast data analysis.
  13. Click the Auto button to start mast data processing according to the predefined logic. The logical sequence is: auto-data clean, calibration, data repair, extrapolation, and long-term correction.

    If you do not want to deal with the mast data in the auto mode, perform the procession step by step.

    Figure: Mast Data Processing Procedure

    Click the expand icon at each step to show its configuration and set them manually. After you apply the configuration of a step, the √ icon at its left side is lighted. Click the Cancel button to cancel all the application of configuration.