Creating a harmonics calculation

With the harmonics calculation you can check whether the harmonic currents at the point of interconnection are within the thresholds. The harmonics calculation can be performed single- or multi-phase for SMA inverters of various device types. If you would like a harmonics calculation for medium-voltage systems or if overstepping of the thresholds occurs, contact the sales department of the SMA subsidiary for your country. When you select a project from the overview, you can edit or delete the harmonics calculation or save the harmonics calculation report as a PDF document.

Procedure:

  1. Select the option Harmonics calculation on the personal home page under TOOLS.
  2. The Harmonics calculation dialog box will open.
  3. Click on [Create new harmonics calculation].
  4. To transfer data from an existing project, select [Select project template].
  5. Enter the required project name in the field Project name.
  6. If available, enter the registration number of the planned PV system in the field Registration number.
  7. Enter the editor's name in the field Calculation performed by.
  8. Select the desired Grid voltage from the drop-down list.
  9. Enter the short circuit power indicated by the grid operator in the field Short circuit power.
  10. Enter the total connectable feed-in power indicated by the grid operator in the field Connectable feed-in power. If you did not receive a value, enter 0.
  11. In the area Inverter, click on the [Add inverter] button.
  12. The Select inverter dialog box will open.
  13. To restrict the list of displayed inverters, enable the required checkboxes under Limit products.
  14. Select the row of the desired inverter.
  15. The activated row is displayed in a different color.
  16. Click on [Apply inverter].
  17. The selected inverter is added and displayed under Inverter.
  18. To add further inverters, click on [Add inverters].
  19. Select the required report template from the drop-down list Select report template.
  20. Select [Show report].
    Downloading further project files
    Glossary