Enable subnetworks

Subnetworks are well-defined areas of connectivity in your database that either originate or terminate to a known set of features called subnetwork controllers. In an electric system, subnetworks are used to model the connectivity, because they exist as features in your database, they can be used to organize, manage, and analyze your data. In this workflow, you will define subnetwork controllers and create subnetworks.

Set subnetwork controllers

Subnetwork controllers define the origin or destination of a subnetwork. They are used in subnetwork management and specify how a resource flows through a network. Subnetwork controllers require terminals and are an important part of the utility network.

Set the electric distribution subnetwork controller

In the workflow data, the subnetwork controller for the electric system are the circuit breakers. You will set these subnetwork controllers, which will later be used to create the subnetwork. To set the subnetwork controllers, complete the following steps:

1. If necessary, open the Electric Network Asset Type map.
2. Clear any previous selections.
3. On the Map tab, in the Selection group, click Select by Attributes.
4. For Input Rows, choose Electric Device\Circuit Breaker.
5. Under Expression, build the following expression: Where Feeder ID is equal to RMT001.
6. Click OK.

   The circuit breaker is selected on the map, although you may need to zoom in to see it.

7. On the Utility Network tab, in the Subnetwork group, choose Modify Controller.

   The Modify Subnetwork Controller pane appears.

8. In the Modify Subnetwork Controller pane, click Add Selected , and then set the following parameters:
   1. For Terminal, choose CBD:Line Side.
   2. For Tier, choose Electric Distribution.
   3. For Subnetwork Controller Name, type Naperville North Station Circuit 0001.
   4. For Subnetwork Name, type 0001.
   5. For Description, type Naperville North Station Circuit 0001.
9. Click Apply.
10. On the Utility Network tab, in the Network Topology group, click Validate .
11. On the Edit tab, in the Manage Edits group, click Save .
12. Repeat these steps using the table below as a guide. The Terminal and Tier values will remain the same as what was used on the first controller.

    Feeder ID	Subnetwork Controller Name	Subnetwork Name	Description
    RMT002	Naperville North Station Circuit 0002	0002	Naperville North Station Circuit 0002
    RMT003	Naperville South Station Circuit 0003	0003	Naperville South Station Circuit 0003
    RMT004	Naperville South Station Circuit 0004	0004	Naperville South Station Circuit 0004
    RMT005	Naperville South Station Circuit 0005	0005	Naperville South Station Circuit 0005
    RMT006	Naperville South Station Circuit 0006	0006	Naperville South Station Circuit 0006
    RMT007	Naperville South Station Circuit 0007	0007	Naperville South Station Circuit 0007

Create subnetworks

When a subnetwork is updated, information in the Subnetworks table, attributes on features, and objects are updated, and a subnetwork line in the SubnetLine feature class can be created or updated.

To calculate the subnetwork values, complete the following steps:

1. If necessary, open the Electric Network Asset Type map.
2. In the Geoprocessing pane, click Toolboxes, expand System, and expand Utility Network Tools, and then click the Update Subnetwork tool.
3. In the tool, set the following parameters:
   1. For Utility Network, click the drop-down arrow and choose Network Utility Network.
   2. For Domain Network, choose Electric.
   3. For Tier, choose Electric Distribution.
   4. For All Subnetworks in Tier, check the check box.
   5. For Continue on Failure, leave the check box unchecked.
4. Click Run.

After running the tool, the subnetwork fields are populated with values of the subnetworks that they participate in. If a field shows Unknown, it could indicate that there is an issue in that area.

This tutorial provided a detailed and structured approach to migrating geometric network data into the utility network using the Electric Utility Network Foundation. By following the steps outlined in each section, you successfully navigated the data migration process, from preparing the project and data mapping to resolving network errors and creating subnetworks. You can apply the knowledge gained from this tutorial to migrate your own data to the utility network, ensuring a smooth transition.