This test system aims to show how a three-phase system should be assembled for simulation. In this example, there are many different models being used, like two-phase lines, buses and loads.
This example is not a dynamic system, and therefore the voltages and angles from all buses are static during the simulation. The simulation just calculates the initialization variables, which are the solution for the three-phase power flow. The results can be verified against any tool that calculates a three-phase power-flow.