It is possible to model a center tapped, single phase transformer in PowerFactory for extended distribution networks with long single phase lines. The attached example shows a possible implementation.

The transformer is connected to a single phase line on the HV side. The grounding is realised internally but can also be external. On the LV side, the transformer has a neutral connection. All busbars at the LV side have the phase technology Bi-N. In this example, two loads are connected between phase and neutral, and a large load is connected between both phases.

An unbalanced load flow has to be run on this network configuration.