Use network diagrams for quality assurance

In this tutorial, you will act as a GIS analyst for an electrical utility. In response to several user reports, the department is performing quality assurance checks on its network data. The GIS at a utility company is used by different departments for asset management, engineering analysis, and planning purposes. Supporting a modern utility requires maintaining a high standard of data quality. GIS is no longer only about making good-looking maps; it's about modeling the relationships and connectivity of all the assets maintained by the utility company so they can be leveraged by other systems and users. Quality assurance and quality control (QAQC) is an important part of maintaining any dataset, and as datasets grow larger and get more complicated, it is even more important to have robust tools that help to visualize and analyze the data in intuitive ways. You will use ArcGIS Pro tools, ArcGIS Utility Network, and network diagrams to explore associations between features and correct them if necessary. While the data and terminology presented in this tutorial are specific to the electric industry, the tools and processes translate to the data and workflows used by other industries, such as water or gas utilities.

This tutorial was last tested on February 8, 2024, using ArcGIS Pro 3.2. If you're using a different version of ArcGIS Pro, you may encounter different functionality and results.

Requirements

• Basic understanding of ArcGIS Pro and ArcGIS Utility Network.
• ArcGIS Pro Standard or ArcGIS Pro Advanced
• User, Publisher, or Administrator role in an ArcGIS organization: ArcGIS Online (see options for software access) or ArcGIS Enterprise (learn more)

Perform quality assurance on substations

You have received several correction requests from various departments in your utility complaining that one of the substations has incorrect data associations. Some users reported that there are features appearing in the substation that shouldn’t be there, and in other cases, users reported features that should be in the substation and are not. This station you will analyze contains over 50 features and many different circuits. Manually reviewing the attributes and relationships for each feature would take time, and it would be easy to overlook something. To facilitate in the QA/QC process for the electric network, you will create and use a network diagram to explore the substation and identify the data errors. Once you discover the errors, you will use ArcGIS Pro tools to update and correct them.

Generate a network diagram

You will download an ArcGIS Pro project package, create a network diagram, and arrange the maps to make it easier to visualize the diagram and the network simultaneously.

1. Download the UseDiagramsForElectricNetworkQAQC project package.

   A file named UseDiagramsForElectricNetworkQAQC.ppkx is downloaded to your computer.

2. Locate the downloaded file on your computer and double-click it to open it in ArcGIS Pro.
3. Sign in to your ArcGIS organizational account.

   Note:

   If you don't have an organizational account, see options for software access.

4. On the ribbon, click the Map tab. In the Navigate group, click Bookmarks and choose Diehl Rd Substation.

   

   The map zooms to an area close to the Diehl Rd substation, represented with a yellow polygon.

   

5. On the Map tab, in the Selection group, click the Select tool.

   

6. On the map, click the Diehl Rd substation polygon feature to select it.

   The feature is selected and highlighted in blue.

   

   You will use the selected substation to generate a network diagram using a template called ExpandContainers. The ExpandContainers diagram template automatically expands and displays containers to show connectivity associations for all features in the network diagram, which allows you to see all the features in your diagram and visually verify their relationships.

7. On the ribbon, click the Utility Network tab. In the Diagram group, for New, click the drop-down arrow and choose ExpandContainers.

   

   A new diagram map view opens and displays the network diagram.

   

   The diagram shows the Diehl Rd substation with all its related contents inside. In a diagram, a container polygon is always displayed as a rectangle polygon surrounding its contents regardless of its true geometry in the GIS. The brown dashed lines between junctions represent connectivity associations (when present) between two network junctions.

   Next, you will arrange the Diagram map and the Electric Network Editor map side by side to make them easier to interact with.

8. Right-click the Diagram map tab and click New Horizontal Tab Group.

   

   The maps display horizontally, one on top of the other.

   

9. If necessary, click the Diagram tab to make it the active tab.

   ArcGIS Pro is context sensitive, meaning that when you click different elements, the ribbon options change.

10. On the ribbon, click the Network Diagram tab. In the Navigate group, click the Full Extent button.

    

    The diagram zooms out to show its full extent.

11. Click the Electric Network Editor map tab to make the map active.
12. In the lower right corner of the map, click Selected Features: 1 to zoom to the selected feature.

    

    Now both maps are zoomed and centered.

    

    Next, you will check some network diagram settings.

13. Click the Diagram map tab.
14. On the Network Diagram tab, in the Selection group, click the Network Diagram Options button.

    

    The Network Options window appears.

15. In the Propagation section, ensure that the Zoom to the resulting selected features option is checked.

    

16. Click OK.

    You have created a diagram from a selected substation. Now you are now ready to perform a QAQC workflow using this sample diagram.

Identify unexpected content in the substation

Now that you have created a network diagram for a substation, you can start investigating issues raised by other departments. The first issue is from the user who reported that there was extra equipment appearing in the substation that shouldn’t be there.

By looking at the diagram, you can see that there are a series of junctions in the substation that aren’t connected to anything else. You will investigate these features to determine if they are the ones the user reported.

Bring your attention to the six high voltage junctions located at the top inside the substation in your diagram. These junctions appear to be isolated from the other substation content. You will locate these junctions in the network map to verify their location.

1. In the Diagram map, use the Select tool and draw a rectangle around the six junctions at the top of the map.

   

   All features that touch the selection box are selected, including the substation polygon. You don’t want this feature selected, so you will remove it from the selection.

2. Press the Ctrl key and click the substation polygon to unselect it.

   

   The junctions with asset identifiers 26, 27, 105, 106, 107 and 108 are selected in the network diagram.

3. On the Network Diagram tab, in the Selection group, click Apply To Maps.

   

   The six network junctions become selected in the Electric Network Editor map. The map automatically zooms to the resulting selection of network features.

   

   These six features are all clearly located outside of the Diehl Rd substation in the network map. It looks like these are the features highlighted by your colleague as there are unexpected containment associations set for these junctions. You are going to fix that.

4. Click the Electric Network Editor map tab to make it the active map.
5. On the Utility Network tab, in the Associations group, click Modify.

   

   The Modify Associations pane appears.

6. Click the Load selected button.

   

   The pane is automatically updated according to the selection set.

   

7. For Active Items, click the drop-down arrow and verify that the loaded features match the ones from the diagram.

   

8. Click the gray area of the Modify Associations pane to close the list.
9. Click Containment and expand the Contained In section.

   

   There is a containment association between the first high voltage line end junction in the list and the substation boundary feature. If you change the Active Item option to make any other of the five junctions active in the list, you can see a similar containment association with the same substation for each. These unexpected containment associations explain why these junctions display inside the substation in the diagram. You will delete these invalid containment associations.

10. In the Active Item list, verify that item 107 is selected.

    

11. Under the Contained In section, select the containment association.

    

12. In the Delete column, click the delete button.

    

    Strikethrough text appears on the selected containment association and the row has a green bar next to it, indicating an edit was performed.

    

13. At the bottom of the Modify Associations pane, click Apply.

    The containment association is removed from the Contained In section. Now, the selected feature displays no containment associations.

    

    A dashed purple polygon appears at the bottom of your network map.

    

    This polygon represents a dirty area feature and indicates that a change to the network has taken place and is not yet reflected in the network topology.

14. In the Modify Associations pane, in the Active Item list, select the next High Voltage Line End junction (108).
15. Under the Contained In section, select its related Structure Boundary container line and delete it.

    

16. Click Apply.
17. Using the same steps that you have performed to delete the previous two associations, delete the remaining associations for features (105, 106, 26, and 27) in the Active Item list:

    • From the Active Item list, choose the next junction feature.
    • In the Contained In section, select the association and delete it.
    • Click Apply.

    You’ve removed all the bad containment associations from the network. Using the network diagram made the process of locating erroneous features much easier.

Update the network topology

Now that you've finished correcting the data for this substation, you must validate your edits to the network topology. You will zoom to the extent of the dirty features and validate the network topology to clean this area and update the edits that you made.

1. Click the Diagram map tab to activate it.
2. On the ribbon, on the Network Diagram tab, in the Manage group, click Consistency.

   

   The consistency of the diagram is evaluated, and an inconsistency warning appears in the Contents pane next to the diagram layer.

   

   When the diagram is not consistent with the network editing space or with the network topology space, the inconsistency warning will appear. On the map, the dashed lines, or dirty areas, refer to parts of the network that have been edited, but not validated. The network has dirty areas because you made edits to the network and have not validated yet. Next, you will validate the edits.

3. Make the Electric Network Editor map the active map.
4. In the Contents pane, expand the Network Utility Network layer.

   

5. Right-click the Dirty Areas sublayer, point to Selection, and choose Select All.
6. Right click the Dirty Areas once again, point to Selection, and choose Zoom To Selection.

   

   The map zooms out to show the all the dirty areas.

7. On the Utility Network tab, in the Network Topology group, click the Validate button to validate the current extent.

   

   The dirty areas are cleaned and disappear from the map.

   

   The edits you made are now reflected in the network topology.

8. On the ribbon, click the Edit tab. In the Manage Edits group, click Save.

   

9. If necessary, in the Save Edits dialog box, click Yes.
10. Activate the Diagram map.
11. On the Network Diagram tab, in the Manage group, click the Consistency button.

    

    The inconsistency warning icon next to the diagram layer is now yellow. The yellow icon means that the network topology changed for features in the open diagram. The diagram is now inconsistent with the network topology space. You will update the diagram to reflect these changes.

12. In the Diagram map, click the Deselect all currently selected features button.

    

13. On the Network Diagram tab, in the Modify group, click the Update button.

    

    The diagram updates.

    

    When the update completes, the inconsistency icon in the Contents pane next to the diagram layer goes away. The six junctions are also no longer present in the diagram. Because the six junctions are no longer set as content of the Diehl Rd substation, they are no longer retrieved during the diagram update. The diagram container rectangle redraws around its remaining contents.

    Using a network diagram, you have successfully fixed bad containment associations that existed for the Diehl Rd substation. This resolves the issue for the user who reported seeing extra features inside the substation that shouldn't be there.

Identify missing connectivity in substation

The next issue to investigate is from a user who reports that only one of the two circuit breakers for the 115kv transmission line appears connected in the substation. The other circuit breaker appears connected to the transmission line but does not appear in any substation.

Locating this issue is going to involve using the network diagram you created earlier.

1. If necessary, activate the Diagram.
2. In the Contents pane, expand the Temporary Diagram and click the High Voltage Switch sublayer to select it.

   

3. On the Network Diagram tab, in the Selection group, click Select By Attributes.

   

   The Select By Attributes window appears with the High Voltage Switch sublayer loaded as the Input Rows parameter.

4. For Where, click the drop-down menu and choose Asset type, keep is equal to, and from the last drop-down menu, choose 181 – AC Circuit Breaker.

   

   You will add a second clause to identity the subnetwork name.

5. Click Add Clause.
6. In the second clause, click the first drop-down menu and choose Subnetwork name.

   

7. Keep is equal to, and click the final drop-down menu and choose Femmi National Lab 115 kV.

   

   This query will select all features that meet both clauses. Meaning the Asset type option must be 181 – AC Circuit Breaker and the Subnetwork name option must be Femmi National Lab 115kV for a feature to be selected.

8. Click OK.

   

   The query results in two circuit breakers selected in Bay 1 and Bay 2 of the Diehl Rd substation.

9. In the Diagram map, zoom in to the selected circuit breakers.

   

   In Bay 1, there is no diagram edge (a dashed red line) connecting the high voltage switch circuit breaker to the High Voltage Line End busbar in the substation. This indicates that there is no connectivity between the two features in the network.

10. In the Diagram map, clear the selection.
11. On the ribbon, click the Select tool and select the disconnected high voltage switch circuit breaker. Press the Shift key and click the high voltage line end busbar you want to connect it to.

    

12. On the Network Diagram tab, in the Selection group, click Apply To Maps.

    The network features represented in the diagram zoomed to and selected in the map.

    

13. Make the Electric Network Editor map active.
14. On the ribbon, click the Utility Network tab. In the Associations group, click Modify.
15. In the Modify Associations pane, click Load selected.

    The pane automatically fills according to the selection set.

16. For Active Item, click the drop-down arrow to see the loaded items.

    

    The two network features selected in the map appear in the list.

17. For Active Item, keep the Electric Device: High Voltage Switch – AC Circuit Breaker:336 device selected.
18. Click the Connectivity (0) tab. Expand the Junction - Junction (0) section and click Add selected.

    

    The selected junction appears in the list.

    

19. Click Apply.

    Though they may not be fully visible, dirty areas appear around the two selected junctions. Next, you will validate the network topology to include the connectivity associations you just added.

20. On the ribbon, on the Utility Network tab, in the Network Topology section, click Validate.
21. On the ribbon, click the Edit tab. In the Manage Edits section, click Save, and click Yes to confirm saving all edits.
22. Activate the Diagram map.
23. On the ribbon, on the Network Diagrams tab, in the Manage group, click Consistency.

    In the Contents pane, there is an orange inconsistency warning icon next to the diagram layer, meaning that the network topology changed for features in the open diagram. Next, you will update the diagram to reflect these changes.

24. On the ribbon, in the Modify group, click Update.

    

    The connectivity association between the two junctions is now displayed in the diagram. The user who reported missing connectivity in the substation should now see the circuit breaker in bay 1 connected to the rest of the substation.

Identify missing content in the substation

Now that you’ve fixed the missing connectivity in the substation, you will focus on another issue that a user raised about some missing content in the substation. The user said that substation bays and the equipment contained in them aren’t appearing in the substation in the asset management system.

1. On the Network Diagram tab, in the Navigate group, click Full Extent.
2. In the Diagram and Electric Network Editor maps, clear the selected features.

   By looking at the diagram, you can see that the substation bays are not fully inside the substation polygon. The polygon in the network diagram is a visual indicator of what is contained in the substation, so this confirms that even though the data is in the GIS, it is not properly contained within the substation. First, you will confirm which features are contained in the substation.

3. Select the substation polygon.
4. On the Network Diagram tab, in the Selection group, click the Select Related Contents button.

   

   All features contained in the substation are selected.

   

   The busbar, busbar taps, and power transformers are selected because they are contained within the substation. The substation bays are not selected because they are not contained within the substation. To correct this, you will add the substation bays as content to the substation.

5. On the Network Diagram tab, click Apply to Map.
6. Activate the Electric Network Editor map and zoom out so you can see the Diehl Rd substation, or at least a part of it.
7. On the Utility Network tab, click Modify. In the Modify Associations pane, click the Add features button and, on the map, click the substation to select and add it.

   

8. Click the Containment tab and expand the Contains section to see everything contained by the substation.

   

9. Activate the Diagram map and clear its selection.
10. In the Contents pane, scroll down until you see the Structure Boundary sublayer and expand it.

    

11. Right-click the Electric Bay Boundary sublayer, point to Selection, and choose Select All.

    

    The 15 bays represented in the active diagram become selected in the diagram map.

12. On the Network Diagram tab, click Apply To Maps.

    

    The 15 bays become selected in the Electric Network Editor map.

13. Activate the Electric Network Editor map.
14. In the Modify Associations pane, in the Contains section, click Add selected.

    

    The 15 bays are added to the list.

    

15. Click Apply.

    

    Dirty areas appear on the map.

16. In the Contents pane, right-click the Dirty Areas layer, point to Selection, and choose Select All. Zoom to the selection.
17. On the Utility Network tab, in the Network Topology group, click Validate.
18. On the Edit tab, save the edits and click Yes to confirm.
19. Activate the Diagram map and clear its selection.
20. On the ribbon, click the Network Diagram tab. In the Manage group, click Consistency.

    In the Contents pane, there is a yellow inconsistency warning icon next to the diagram layer. This warning indicates that the network topology changed for features in the open diagram. You must update the diagram to reflect these changes.

21. In the Modify group, click Update.

    

    The substation bays and all their equipment now appear within the substation polygon, which indicates that they are now contained within the substation. You will confirm this in the same way that you discovered the bays were not contained in the substation.

22. In the Diagram map, select the substation. On the Network Diagram tab, in the Selection group, click Show Related Contents.

    

    The related features are selected; however, the equipment in the bays is not selected because they are not directly related to the substation.

    

23. Click the Select Related Contents button again to select the content in the bays.

    Any switch\CB and line end junctions are selected in each bay with the connectivity association that relates them.

24. Close the Diagram map, clear the selection in the Electric Network Editor map, and save the project.

    The containment hierarchy between the Diehl Rd substation and these 15 bays is now properly set. All the missing and invalid associations that existed for the Diehl Rd substation and its related equipment are now fixed and validated.

You’ve built network diagrams and used them to visualize and locate invalid containment issues within a substation. Once you found the invalid features, you modified the associations, validated the topology, and updated the diagrams so the data represents the real-world more accurately. The workflows that you performed are just a few of many possible workflows you can use to perform quality assurance to ensure network connectivity and proper associations between features.

Perform quality assurance on distribution equipment

In the previous module, you used a default diagram template to evaluate a substation. The default templates work well for most situations, but if you are frequently applying certain layouts or rules to diagrams, it may be beneficial to use a custom template. In this module, you will learn how to adjust the layout and rules of a diagram and how to create a custom diagram template to help highlight missing network associations.

Manually apply a layout to an open diagram

You previously used the layout of the default diagram template to evaluate data. In this section, you will learn how using different diagram layouts can improve your understanding of the relationships between features in your network.

1. Close the Electric Network Editor map.
2. In the Catalog pane, expand the Maps folder and double-click QAQC (standard layers).

   

   A map appears showing network features.

   

3. Navigate to the New streetlights #1 bookmark.

   

   The map zooms to a parking lot where many new streetlights have been installed.

4. Use the Select tool to draw a rectangle that encompasses all the streetlights in the parking lot.

   

   This selection results in 31 low voltage lights, 31 low voltage poles, and 31 low voltage lines selected in the map, or a total of 93 selected features. If you have a different number of selected features, perform the selection again.

5. On the ribbon, click the Utility Network tab. In the Diagram group, for New, click the down arrow and choose QaQc Custom Template.

   

   A diagram map view appears and displays the newly generated network diagram.

   

   This diagram resembles what is currently selected in the network map because the template doesn’t contain any special behaviors yet. In this diagram, the poles and lights are placed at their geographical position, right next to each other. This makes it difficult to see the pole each light should be attached to and makes it impossible to see whether there is an attachment between the pole and the light.

6. On the Network Diagram tab, in the Layout group, for Diagram Layouts, click the down-arrow and choose Force Directed.

   

   The diagram adjusts the position of all the features, making it easier to see features that are stacked on top of each other, as well as making it easier to see when features are not connected or attached to each other.

   

   You have applied a diagram layout to an open diagram. If you want to apply this layout every time you create a diagram for your distribution network you must adjust the diagram template for that tier of your network. You will learn how to do this in the next section of this tutorial.

Create a custom diagram template

This project contains the geoprocessing model used to create the current diagram template for your distribution network. You can use ModelBuilder to modify this template to include any additional layouts or rules that you want.

1. In the Catalog pane, expand Toolboxes, and expand the UseDiagramsForElectricNetworkQAQC toolbox.

   

   In the toolbox, there is a model named Update QaQc Diagram Template.

2. Right-click the Update QaQc Diagram Template model and choose Edit to open the model in edit mode.

   

   Review the sequence of network diagram configuration tools used to configure this diagram template. As with any diagram template geoprocessing model, the sequence of operations begins with the Alter Diagram Template tool.

3. Double-click the Alter Diagram Template tool (yellow box) to load the geoprocessing tool and expand the Template General Definitions section.

   

   The tool parameters show this template creates diagrams with the following characteristics:

   • There are no vertices initialized along diagram edges (Keep initial vertices on edges box unchecked).
   • Users cannot store any diagram based on this template (Enable diagram storage box unchecked).
   • Users can use the Extend diagram operations on diagrams based on this template (Enable to extend diagram box checked).
4. Close the Alter Diagram Template tool.
5. Double-click the next yellow box, Add Expand Container Rule.

   The tool opens with its default settings. The diagram rule is configured to expand any container feature in the generated diagrams whether it represents a junction or an edge in the network.

6. Close the tool.
7. Open the Add Connectivity Associations Rule tool.

   There are no settings to configure for this rule; it creates a diagram edge between any junctions represented in the diagram that are connected to each other through a connectivity association.

8. Close the tool.
9. Open the Add Structural Attachments Rule tool.

   As with the previous rule; this rule is used to systematically create a diagram edge between network equipment and structure junctions when a structural attachment exists between them.

10. Close the tool.
11. In the upper right corner of the model, click Show Toolbar.

    

12. On the toolbar, in the Run group, click the Validate button.

    

    When you validate a model, the model elements will become gray if there is an issue. Otherwise, the model elements remain colored, indicating that the model is ready to run.

13. On the model toolbar, in the Insert section, for Tools click the down-arrow. In the search box, type add force, and double-click the Add Force Directed Layout tool to add it to the model.

    

    The tool and two output elements appear on the model. You will move the elements to be the next process in the model.

    Note:

    Do not use the Apply Force Directed Layout geoprocessing tool when modifying a diagram template. The Apply Layout tools modify the existing diagram layout, whereas the Add Layout tools add layouts to diagram templates.

14. Verify that all three model elements for the Add Force Directed Layout tool are selected (handles are visible around them) and move them to the right of the Add Structural Attachment Rule tool.

    

    You want to add this layout to the end of our model, so you will connect the Output Network and Output Diagram Template elements from Add Structural Attachments Rule to Add Force Diagram Layout tool.

15. Click the model canvas to clear the selected elements.
16. Drag an connector line from the Output Network (3) element to the Add Force Directed Layout tool. Release the mouse button and choose Input Network.

    

17. Repeat this process for the Output Diagram Template (3) variable and choose Input Diagram Template.

    

    The Add Force Directed Layout tool and its elements are colored in, indicating they are ready to run.

18. Double-click Add Force Directed Layout to open it.
19. On the toolbar, in the Run group, click the Validate button.

    All model elements remain colored so you can now run the model.

20. On the model toolbar, click the Run button.

    

21. Once the model is complete you can close the message window.

    

22. Close the Update QaQc Diagram Template model and click Yes to save the model.

    Now that you’ve updated the custom diagram templates to use the force directed layout you will regenerate your diagram to confirm it is working correctly.

23. Close the Diagram map you made earlier in this section.

    The QAQC (standard layers) map is now active and still has the same features selected.

24. On the ribbon, click the Utility Network tab. In the Diagram group, for New, click the down arrow and choose QaQc Custom Template.

    

    The diagram is now generated based on the Add Force Directed Layout template that you set it to in the model.

    

    You have modified a diagram template using a model and applied the template to your network.

Find a pole without a streetlight

Now that you’ve generated a network diagram showing how all the streetlights and poles in this area are related to each other, it is much easier to see where the problems are. In this section, you will use this new network diagram to identify and correct the issues with the data. Specifically, you will ensure that all low voltage street lighting poles have a streetlight attached to them.

1. Activate the Diagram map.
2. On the diagram, select the low voltage pole that is not connected to any other features.

   

3. Right-click the Diagram map tab and click New Vertical Tab Group.

   

   The Diagram map and the QAQC (standard layers) network map are displayed side by side.

4. Zoom to the full extent of the diagram.
5. On the Network Diagram tab, in the Selection group, click Apply to Maps to select this pole in the QAQC (standard layers) map.

   

6. Activate the QAQC (standard layers) map.
7. On the map, zoom to the selected pole.

   

   The selected pole centers in the network map with a low voltage lighting feature next to it. Because the network diagram didn’t show an attachment line connected to this pole, you know that the streetlight is not currently attached to this pole. Next, you will modify the association to fix the issue.

8. On the Utility Network tab, in the Associations group, click Modify.

   The Modify Associations pane appears.

9. Click Load selected.

   

   The Structure Junction – Electric Low Voltage Pole currently selected in the network map displays as the Active Item.

10. Under the Active Item, click Attachment and expand the Attachments section.

    

11. Next to the Add selected button, click the selection tool.

    

12. On the QAQC(standard layers) map, zoom in close to the selected pole so you can see the streetlight next to it.

    

13. Click the streetlight to the right of the selected pole.

    

    In the Modify Associations pane, the Electric Device – Low Voltage Lighting item appears under the Attachments section.

    

14. In the Modify Associations pane, click Apply.

    Dirty areas appear around the pole and light.

15. On the Utility Network tab, in the Network Topology group, click Validate. Save your edits.
16. Activate the Diagram map.
17. On the Network Diagram tab, in the Modify group, click Update.

    The structural attachment you just added between the pole and the low voltage light is now displayed in the active diagram.

    

18. Close the diagram and in the QAQC (standard layers) map, clear the selection.

    You used a model to create a custom diagram template and resolved a connectivity issue in the network. Next, you will continue the QA/QC process on the network.

Find streetlights without an associated pole

Now that you are familiar with the force directed layout diagram template, you will learn how to solve the same problem using the Extend diagram tool. This tool is not enabled on the diagram template used in the first module, so you will use a custom diagram template, or modify the properties of the default template, to enable the tool.

Extend diagram functions allow you to extend the content of temporary diagrams one network element level by connectivity, traversability, containment, or attachment. This functionality is particularly helpful during network data control and validation phases. In this section, you are going to use the Extend Diagram by Attachment command. This command allows adding to the active diagram any network elements expected to be attached to a network structure represented in the diagram.

1. Navigate to the New streetlights #2 bookmark.

   

   The map zooms to a portion of the electric network representing low voltage equipment.

   

2. In the Contents pane, click the List By Selection button.

   

3. Right-click the Electric Line layer, point to Selection, and choose Make this the only selectable layer.

   

   Making the layer the only selectable layer will ensure so you can only select electric lines when you make the selection. When you generate the network diagram, this will ensure that only the features electrically connected to the line will appear in the diagram.

4. Use the selection tool to draw a rectangle around the horizontal electric lines in the center of the map and the one vertical line south of them to form a T.

   

   There should be eight electric lines selected.

5. In the Contents pane, in the Selection section, press the Ctrl key and click one of the check boxes to make all the layers selectable again.

   

6. On the ribbon, click the Utility Network tab. In the Diagram group, for New, click the drop-down arrow and choose QAQC Custom Template.

   A diagram map view opens showing the electric lines, along with the devices and junctions connected to them, from the selection you made.

   

   By default, all diagrams initially open with restricted layers, meaning that you’ll only see the sublayers required to display the diagram features that are represented in the diagram. Before running operations that may change the diagram content, such as extending or appending diagram content, you should enable all layers.

7. On the Network Diagram tab, in the Manage group, click All Layers.

   

   When you enable all layers, the Dynamic, Extend, and Append operations are enabled.

8. On the ribbon, in the Modify group, for Extend, click the down arrow and choose Extend Diagram By Attachment.

   

   Most of the poles in the diagram have an attached streetlight, except for two.

   

   This situation is problematic because a streetlight must be attached to another structure for the network to be valid. Next, you will fix the streetlights that don’t have an associated pole.

Fix the streetlight without a pole

Next, you will modify the association for the streetlight without a pole to ensure that the networks feature are valid.

1. Right-click the Diagram map tab and choose New Horizontal Tab Group and zoom to the full extent of the diagram.
2. In the diagram, select the western streetlight without a pole.

   

3. On the ribbon, click Apply to Diagrams to select the same feature in the QAQC (standard layers) map.

   

   In the utility network map, the streetlight feature is zoomed to and selected. Next, you will modify the association for the selected streetlight.

4. Activate the QAQC (standard layers) map. On the Utility Network tab, in the Associations group, click Modify.
5. In the Modify Associations pane, click Load selected.

   

   The selected Electric Device – Low Voltage lighting feature is the active item.

6. If necessary, click the Attachment tab and expand the Attached To section.
7. Next to the Add selected button, click the selection tool.
8. In the QAQC (standard layers) map, zoom in close to the selected feature so you can see both the streetlight and the nearby power pole.
9. Click the electric low voltage pole next to the selected streetlight.

   

   The selected pole appears in to the Attached To section.

   

10. Click Apply.
11. On the Utility Network tab, in the Network Topology group, click Validate. Save the edits

    Next, you will verify whether this attachment is properly set.

12. Activate the Diagram map and ensure that the unconnected pole is still selected.
13. On the Network Diagram tab, in the Modify group, click Extend and choose Extent Diagram By Attachment.
14. Activate the network map and on the Utility Network tab, in the Selection group, click Apply To Diagrams.

    

    The newly attached lighting and the related structural attachment are now part of the updated diagram.

    

15. Close the Diagram map tab and clear the selection in the QAQC (standard layers) map.
16. Save the project and exit ArcGIS Pro.

    You created a custom diagram layout using a model and then applied it to the default diagram. Then you used identified disconnected junctions in the diagram and fixed the issue.

In this tutorial, you learned how you can use network diagrams to make a quality assurance and quality control process more efficient. You created and used network diagrams to locate erroneous features and then used ArcGIS Pro tools to fix them. One the issues are fixed and validated in the network, you can be confident in the integrity of the network and its associated data. You also customized a diagram template using a ModelBuilder model to make it easier to find certain types of issues. You used all these techniques to find, fix, and validate issues in the network so you can be confident in the integrity of the network and its associated data.

Acknowledgements

• All electric network data courtesy of Esri.
• World Topographic Map sources: Esri, HERE, Garmin, FAO, NOAA, USGS, OpenStreetMap contributors, and the GIS User Community
• World Hillshade layer sources: Esri, Airbus DS, USGS, NGA, NASA, CGIAR, N Robinson, NCEAS, NLS, OS, NMA, Geodatastyrelsen, Rijkswaterstaat, GSA, Geoland, FEMA, Intermap, and the GIS user community