Create the Deletion GRR File for Subnetworks Deleted from GIS

Organizations whose data contain numerous low-voltage subnetworks often need to delete subnetworks (feeders) or move one subnetwork from one substation to another. There may also be the need for temporary changes, such as situations when the whole subnetwork is being migrated from one source (e.g., a substation) to another temporary source (e.g., aggregate) while construction in the field proceeds. Oftentimes, the inconsistent naming of substations, which includes subnetwork controllers and subnetwork names, results in removal of the old subnetwork name as well as the addition of a new one.

To support the scenarios above, Schneider Electric provides an empty Geodatabase Region Resource (GRR) that notifies downstream systems that one or more subnetworks were deleted from your GIS data.

NOTE: You have the option of manually deleting subnetworks from the Advanced Distribution Management Systems (ADMS) network model by choosing the Delete Feeder option from the Extracts Summary of the ADMS Network Builder application. Unfortunately, this manual operation is not an appropriate solution for organizations that frequently experience the aforementioned scenarios in their GIS data.

Both low- and medium-voltage subnetworks are affected similarly, regardless of the use of GRR Groupings. Additionally, patch-based Integration is not supported. Refer to the ADMS Patch Integration topic for more information.

Delete All Except Subnetwork Controllers

Since subnetworks and their controllers are removed but not actually deleted, the Subnetworks table still contains records related to that specific subnetwork. In the event that a trace is configured to include barriers, which we highly recommend, then a GRR that contains only the subnetwork controller feature (including the auto-generated NonSpatialFeederSource) is provided.

The ADMS Network Exporter then determines how to react to the following within the GRR:

Creation of an empty CIMXML file that contains the stitching node. This option does not remove the feeder container from the ADMS Network Model.
Creation of a specific CIMXML file that contains no equipment details. This option deletes the feeder container from the ADMS Network Model.

From a medium-voltage perspective: Export a GRR with a subnetwork controller element that includes subnetwork controller auto-generated units and the autogenerated NonSpatialFeederSource. This export potentially contains a structure boundary used for primary substation modeling.

From a low-voltage perspective: Export a GRR with a subnetwork controller element that includes subnetwork controller auto-generated units and the autogenerated NonSpatialFeederSource. This export potentially contains a structure boundary used for secondary substation modeling.

From a low-voltage group perspective: The deleted low-voltage subnetwork is contained within the GRR collection of the exported GRR Group file. It contains a subnetwork controller element, its auto-generated units, and the auto-generated NonSpatialFeederSource, plus a potential structure boundary used for secondary substation modeling.