A portion of the Italian transmission system (Piedmont Region) is simulated at ACS-RWTH (Aachen) laboratory on a Real-Time Digital Simulator (RTDS). This is a special-purpose simulator developed for performing electromagnetic transient simulations in real time. RTDS utilizes parallel processing techniques to fulfil high computational demands coming from the simulation of power systems with a typical time step of 50μs.

A summary of the HV transmission system simulated on RTDS:

• Number of 380 kV buses: 26;

• Number of 220 kV buses: 60;

• Number of generators: 20;

• Number of lines: 86;

• Number of loads: 54;

• Maximum total active capacity:8458 MW;

• Maximum total reactive capacity: 4338 Mvar.