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.