For load flow calculation, static analysis, the three phase voltages can only be altered by specifying the amplitude and the phase lag in the positive, negative and zero sequence system of the voltage source.

In transient simulations there is the possibility to create a composite model using DSL to define the voltage profile according to time functions. The input signals to the AC voltage source (ElmVac) to use in the DSL model are U_A, U_B and U_C. The example attached shows an example for transient simulations.