Real-Time Simulation of a 15-bus Electric Grid interconnected with an 192-pulse STATCOM using the eMEGAsim Real-Time Simulator

This model simulates a power system with a rated voltage of 500kV, 8000MVA, 50Hz network, a 220KV, 4500MVA, 50Hz network and a 35kV, 100Mvar 192-pulse STATCOM paralleled with a 120 Mvar capacitor bank. The STATCOM is composed of multiple interlaced three-level IGBT bridges, with a total of 192 switches. In order to detect and compensate switching events that occur in the middle of time steps, all three-level bridges are simulated by the Three-level Time Stamped Bridge blocks from the RTE-Drive blockset. A dual-loop PI controller is used to modulate the firing pulses and hence maintain the voltage at the PCC to a certain level. With the eMEGAsim power systems simulator, this model allows the study of the effect of the STATCOM for voltage stabilization and reactive power compensation in real-time. Also, eMEGAsim allows for the study of various electromagnetic transients, including short-circuit faults (A to ground, AB to ground and ABC to ground), generator islanding or load shedding in real-time. The model is separated into 6 CPUs and the minimum step size of the model is 45 microseconds on a dual quad-core eMEGAsim Real-time Simulator running at 2.3GHz.

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