Power Distribution Network Simulator

My theory is that it sounds like you have two questions here, one is that you're designing a power distribution network as part of a senior project, and two you're writing a thesis on power system simulators. CR4 and Google will provide many answers, but we don't do homework or write theses here.

thanks alot for your response, with all due respect, my point wasnt thesis writing help but theories. for me to come here it means google is not giving me anything sense

thanks alot, i appreciate your effort sir!

I'm not entirely sure what you're after, but the standard simulations you'd be looking at for an industrial distribution network are load flow and short circuit studies. Possibly motor starting if you have large machines (e.g. big milling and crushing machines in a mine).

All the theories you need to know are relatively basic - you'll need to discuss:

1) General: the network model and system parameters

2) Load flow: talk about how to construct the admittance matrix and some iterative schemes for solving the system

3) Short circuit: equivalent SC impedances and the Thevenin equivalent circuit

In addition to what RAM suggested, have a look at IEEE Std 399, "Recommended practice for industrial and commercial power systems analysis". It's actually very good for its educational value.

I also think of what I call a system stability study, but maybe that is the same as what you call a motor starting study?

We used it with respect to large HP motors on rolling mills (3000 to 12,000 HP, iirc). Is that a different study--I can't remember what we (or GE, iirc) called it.

In the old days there were a number of principal studies: load flow, short circuit, motor starting and steady state/transient stability analyses, all using basically the same data but sufficiently different techniques that each was a stand alone program in a batch computing environment.

A motor starting study usually gave the machine buss voltage/speed vs time profile to see if the machine would come up to speed without dragging the voltage down too far. A stability study checked to see if adding incremental load (steady state) or a fault (transient) caused any form of undamped oscillations (instability) in the buss voltages or power flow anywhere throughout the system.

As computers became faster and cheaper some genius realized that using a common input/output format would mean capturing the model data once and simply running the desired analysis at will. Hence the beginning of the modern power system analysis program that does it all...and in real-time!