One of the ways to understand the behaviour of complicated systems is to study the response when subjected to disturbances or parametric variations. Computer simulation is one way of producing these responses, which can be studied by observing time domain instantaneous values, time domain RMS values, or the frequency components of the response.
EMTDC is most suitable for simulating the time domain instantaneous responses (also popularly known as electromagnetic transients) of electrical systems.
The power of EMTDC is greatly enhanced by its state-of-the-art Graphical User Interface called PSCAD. PSCAD allows the user to graphically assemble the circuit, run the simulation, analyze the results, and manage the data in a completely integrated graphical environment.