CoSimulation of Electromagnetic & Phasor Transients

Multi-Domain Phasor + EMT CoSimulation The ETAP eMTCoSim™ mode (provided with eMT™) to enables co-simulation of Electromagnetic and Phasor Transients. ETAP’s Transient Stability (TS) program and eMT are combined to collectively solve large, complex, and multi-disciplinary system- models with higher fidelity. ETAP TS solves the large portions of the network using phasors while eMT solves only the portions requiring waveform-level fidelity.

Co-simulation of Electromagnetic Transients & Phasors

• Hybrid simulation combining transient stability phasors and electromagnetic transients 
• Simulate large network sections using phasors
• Add waveform-level fidelity only where needed (e.g., inverters)
• Co-simulate at milli-second and micro-second time steps 
• Analyze the coupling between the phasor and electromagnetic transient domains: events in one domain propagated to the other
• Live plots for transient stability and EMT simulations
• ETAP’s mapping can export network and components to the electromagnetic transient domain eMTCoSim offers a hybrid simulation comprising EMT and phasor domains. This gives the best of both domains: the solution of larger networks with phasors and added fidelity where needed.   ETAP has developed accurate signal processing algorithms (waveform to phasor data conversion) to accurately map instantaneous EMT data as phasors. This conversion extracts the fundamental power components from the electromagnetic transient domain and injects them into the phasor domain resulting in a fast, easy-to-use, feature rich, and robust co-simulation solver.