PoliTO - Distribution network model


Stura substation in Turin - Italy

The portion of the MV network consists of a primary substation with three MV-22 kV busbars, each of which is fed by a transformer characterized by voltage ratio of 220/22 kV. Two transformers are characterized by a nominal power of 63 MVA and the other one by a nominal power of 55 MVA.  There are 5 MV lines starting from the HV/MV substation. The real-time platform RT-LAB developed by OPAL-RT are used for simulating the distribution system. DS Model has been developed in MatLab Simulink and SimPowerSystem (SPS) environment. To execute the model on the real-time simulator, a fixed step time (initially 50 microseconds) is selected.

Distribution Network Summary:

  • HV/MV transformers: 3 (220/22 kV, 2x63 MVA + 1x 55 MVA);

  • Number of MV feeders: 5;

  • Number of MV buses: 49;

  • Number of lines: 49;

  • Total length of lines: 38.54 km;

  • Number of MV/LV transformers: 40;

  • Number of LV customers: 742 mono phase and 8293 three phase;

  • Total contractual load: 37.056 MW

  • Number of equivalent LV models: 40;

  • Number of MV customers: 6.