EMTP-RV® is the most technically advanced transients analysis software for the simulation and analysis of electromagnetic, electromechanical and control systems transients in multiphase electric power systems. http://emtp-software.com/

EMTP-RV is suited to a wide variety of power system studies including and not limited to:
Insulation coordination
Switching surges
Ferroresonnance
HVDC
Protection
Shaft torsional stress
Synchronous machines
Power electronics and FACTS
Wind generation
Lightning surges
Network analysis
Series compensation
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