Transformer Winding Connection Attributes

The ArcFM Utility Network (UN) models every conductive object and every connection between conductive objects that exists in an electric distribution system. This includes three-phase and two-phase transformer banks connected to the conductors of their primary and secondary circuits.

For integrated applications, like ADMS, that require detailed information about transformer winding connections, the ArcFM UN uses attributes to capture the details because the information can increase the management and size of complex data. GIS users can find it much easier and faster to use attribute domains, or pick-lists, to enter accurate information about winding connections rather than use complex editing tools to visualize and edit the large set of point-to-point connections that may be involved. This action lowers the total cost of ownership when managing GIS data, without eliminating any information needed for detailed modeling and analysis. This approach supports data requirements of applications like ADMS that simulate the electrical behavior of transformers in some detail.

Recommended Configuration

• The ArcFM UN configuration of a transformer bank offers one, two, or three phase-specific paths, with unit objects, between one pair of terminals on the bank, that supports a model of phase propagation through the transformer.

• Four descriptive fields, taken together, can specify connectivity in a way that supports the construction of a detailed topological model of each point-to-point connection among all available physical terminals on the transformer equipment (including center taps) and the available primary, secondary and neutral conductors, by applications that require that level of detail in the GIS data.