This topic is meant to provide an overview of how substations and switching facilities are modeled in the geodatabase and how to export substation/switching facility data for use with DMS. Because HV/MV substations are modeled in DMS as complex objects, you will need to remove the exported substation and switching facility internals from the export and use the SubstationID and BayID values to relate exported substation/switching facility data to the correct HV/MV substations in DMS. The Export to DMS section discusses how to do this. First some definitions:

Substation:This is a feature in the geodatabase with relationships to its internal features (e.g., busbars, fuses). A substation has at least one relationship with a feeder source or Extended Feeder Manager (EFM) subsource.
Switching Facility: This is a feature in the geodatabase with relationships to its internal features (e.g., busbars, fuses). A switching facility does NOT contain feeder sources or EFM subsources.
HV/MV Substation: This is the representation of a substation or switching facility in DMS.

Substations in the Geodatabase

In the geodatabase, a substation is represented as a point feature that has relationships with all of its internal features. A substation is a point feature that has the SUBSTATION model name assigned. Your geodatabase may contain multiple feature classes (e.g., substations, switching facilities) with the SUBSTATION model name assigned. Figure 1 shows the substation point feature in the middle. The three gray lines coming into and going out of the substation represent feeders, which are not related to the substation. The Dynamic Protective Device (DPD) features connected to the feeders are feeder subsources (this database is configured to use EFM) and are related to the substation. The rest of the features (e.g., fuses, busbars, transformers, switches) are internal to the substation.

Figure 1, substation

Each internal feature has a relationship with the substation. These relationships are visible in the Attribute Editor when you have the substation feature selected (figure 2). Note that the SubstationID is the foreign key in these relationships.

Figure 2, Substation relationships

Bay Features

All entry and exit points in a substation are bay features. An exit point that also acts as the source for a feeder is a feeder bay. This is just a particular type of bay feature. Feeder bays are identified by their FeederID values and do not require BayID values. All other bay features must have a BayID value assigned.

If the substation has multiple entry or exit points, each feature that represents a bay (i.e., entry or exit point) into or out of the substation must have a BayID assigned. The BayID field must have the BAYID field model name assigned. In the example below (figure 3), the two switches at the top of the diagram are bay features and serve as entry points into the substation. As the Quick Attribute Viewer screens depict, each of these bay features has a BayID assigned. The BayIDs on these features correspond to BayIDs on features in DMS. The DPD features (indicated by stars on the diagram) act as feeder subsources. These are considered feeder bays and identified by their FeederID values.

Geodatabase subsources are represented in DMS by HV/MV subsources. All geodatabase subsources are modeled in DMS and must be exported from the geodatabase without internal features to avoid redundancy. The Export to DMS section discusses this concept in more detail.

Figure 3, Multiple bays in substation

Switching Facilities in the Geodatabase

If a switching facility is not modeled in DMS, you do not need to place the switching facility feature in the geodatabase or create relationships with the internal features. You can simply export the features that participate in the switching facility and import them into DMS. You may choose to model one switching facility and not another.

Any switching facility that is modeled in DMS, is represented by a HV/MV substation (just like geodatabase substations). If you have a switching facility modeled in DMS, then you must place the switching facility feature and create relationships with its internal features. Like the geodatabase substation, the switching facility internals are excluded from the export to prevent redundancy in DMS.

In the diagram below, the gray lines represent the feeder around the substation. These feeder features are NOT related to the switching facility. The small dot in the middle is the switching facility. The bus bars, fuses, dynamic protective device, and switch in the middle are all internal to the switching facility and have relationships with the switching facility.

The dynamic protective device and switch at the bottom of the diagram and the two fuses at the top of the diagram are all bay features. This means they connect to features that are not related to the substation (i.e., external features). The fuses connected to the feeders are NOT feeder sources. In the example below these bay features connect to feeders (the gray lines) that are not related to the substation. Because there are multiple and they are not feeder bays, all bay features have BayIDs assigned.

Figure 4, Switching facility

Substations must be exported from the geodatabase and imported into DMS where they are represented by HV/MV substations. Switching facilities may optionally be included in the export.

Included in Export: The individual features in the switching facility will be imported into DMS. In this case, the geodatabase switching facility feature will NOT be represented by HV/MV substations.
Excluded from Export: Switching facility is modeled in DMS and represented by HV/MV substations. In this case, the switching facility feature must exist in the geodatabase and have relationships with all of its internals.

Export to DMS

Network Adapter allows you to export a feeder to an XML format that may be imported into DMS. As mentioned in the previous section, you may decide on a case-by-case basis which switching facilities are modeled in DMS. All geodatabase substations are modeled in DMS. The Export to DMS section addresses all geodatabase substations and those switching facilities you’ve chosen to model in DMS.

When exporting to DMS you must ensure that the geodatabase substation internals (or switching facility internals, when appropriate) are not included in the export. Including these features (e.g., busbars) in the export will result in redundancy. The exported XML must include the following for geodatabase substations and switching facilities:

Substation object that includes the SubstationID.
Bay features along with the BayID and SubstationID. Bay features are matched to the correct substation using the SubstationID value.

All features that have a relationship only with the geodatabase substation or switching facility (i.e., internal features) and do not connect to external features are excluded from the export as these already exist in DMS. Bay features must be included to ensure the integrity of the network connections after the exported data has been imported into DMS. When configuring Network Adapter to export, be sure to verify the following are set correctly:

Pipeline Rule: Enable the Remove Substation Internals pipeline rule. To do this, open NetworkAdapter.exe.config and ensure this pipeline rule has not been commented out.
Data Integrity: Ensure a relationship exists with the substation for each feature that may exist within it. All internal features must be related to the substation in which they reside.
Style Sheet: The Multispeak_RemoveSubstationInternals_DMS.xsl style sheet is applied to the export as part of the pipeline rule. Ensure the Remove Substation Internals pipeline rule specifies this style sheet. No additional configuration is needed. This style sheet will remove from the export all feature that are internal to the substation and still include the substation’s bay features.