This week will focus on the introduction to Electrical Transients. To familiarize the students with the different sources of electrical transients, we must first know that...



A transient is defined as subcycle disturbance in the AC waveform that is discernible as a sharp discontinuity of the waveform. The definition states that transients are subcycle events, lasting less than one cycle of the AC waveform.

Why is an understanding of the transient phenomenon important? Large electromagnetic devices such as transformers and motors are practically impervious to the effects of transient.


Here is how a transient model would look like:


Steady-state systems are the opposite of transient systems. In the steady state the operation of a power system is characterized by the fundamental frequency or by some low frequency harmonic of the fundamental frequency.