Editing Single-Line Design

This section is about how to edit the path to access turbines, turbine transformer, self-built substation, and grid-connected substation for single-line graph configuration.

1. Double-click the wind farm layout object in the project pane. The Overview page of this wind farm opens.
2. Select a turbine model series. The selected turbine model series must be configured with the rated power in its property pane. Refer to the section Checking Turbine Model Series Property for details.
3. Configure the component group parameters and select a component group in the Overview page. The mandatory parameter for the component group is the output voltage level of generator. Refer to the section Configuring Component Group for details.
4. Click the Single Line Design tab to show all turbines in this wind farm.
5. Click the Edit Single-Line Graph button to enter the edit mode.
6. Check a turbine or some turbines. (Optional) Check Full selection (Click to select all unconnected turbines) to select all unconnected turbines.
   Note: For turbines to be accessed into one turbine transformer or self-built substation, their voltage grade should be the same. If turbines with different voltage grades, they cannot be accessed to the same substation. You need to classify them by voltage grade and access them respectively. This rule is applicable to access other substations mentioned hereinafter.
7. Create a new connection.
   1. Click Establish Connection>Create Connection. The Establish Connection window opens.
   2. Select a type in the Type of new substation drop-down menu.
      • Transformer substation
      • Grid-connected substation
      • Box substation
      Note: In this step, it is recommended to select a box substation.
   3. Select a voltage in the Exit voltage of substation drop-down menu. The voltage in the In voltage of substation row is the voltage of selected turbine(s).
   4. Click OK to connect a substation to all selected turbines. While accessing box substation, choose Match Box Substation > Match 10 kV Box Substation / Match 35 kV Box Substation to access all selected turbines to a pre-defined box substation.
8. Select the newly-added box substation and repeat Step 7 to connect substations.

   You can click Select all box substations (Click to select all unconnected box substations) to select all unconnected box substations.

   Note: In this step, it is recommended to select a transformer substation.
9. (Optional) Select transformer substations and follow Step 7 to connect them to a grid-connected substation.
10. (Optional) Connect an existing object.
    1. Select turbine(s) or substation(s).
       Note: The object(s) you select here must be empty, that is, turbine or substation object(s) that has not been matched or connected.
    2. Click Establish Connection>Connect Existing Objects.
    3. Select a substation. All the selected empty objects are connected to this substation.
11. (Optional) Hover the cursor over a circuit, the Delete the connection option and the exit voltage level are displayed. If you click Delete the connection, the current circuit and all circuits and substations at its right side are deleted.
    Note: If the circuit or substation at its right side is connecting to other circuits, only the current circuit is deleted.
12. Follow Step 6-11 to configure single-line graph to all turbines.
    Note: For power line design, you must access turbines to self-built substations. Turbines without self-built substation connection will not be calculated in wire optimization.
    Note: If all turbines are finally connected to a self-built substation, in wire optimization calculation of power line design,

    they will be connected to this self-built substation along power line. If turbines are connected to different self-built substations, in wire optimization calculation of power line design, they will be connected to the respective substations based on the configured single-line design.

13. Click Save after the single-line design is completed.
14. Click the return icon to go back to the single-line topology overview page.