In power system & power quality, we come across the term that explains about the happenings during the initial start-up of any electrical machine. In a wider aspect, what is transient velocity and how does it effect the system?
Hi,
During start of electric motors, depending upon starting mechanism, a large current is drawn from the distribution transformer.
Due to this, the panel holding the required bus experiences a sudden drop in voltage and a rise in current,
This effect causes transience in load management.
For details refer the attachment.
Regards,
Arun.
Thanks for the reply and notes about Transient Stability.
Can you please elaborate the thing about Transient VELOCITY ??
As I recall from long ago ..Kimbark (power system stability ) the torque angle delta
oscillates at the time of fault or any sudden load disturbance and it must not exceed
a certain value depending on the system to maintain stability.The velocity is d/dt of delta .It is a nonlinear equation and with methods of field forcing and braking resistors etc the margins can be improved. Modern methods of high speed switchgear also
improves these limits.
Cheers
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