LOAD FLOW CALCULATIONS

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dvmont

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I am working on a spreadsheet (EXCEL) that performs load flow calculations for distribution lines. A second spreadsheet is available for doing motor start calculations. I am wondering if anyone would be willing to look at it and help me improve it.

It is "open source" - if you want to look at the program written in the basic computer language, you are free to do so.

Let me know if you'd like to look test it out. It will always be a "no cost" program.

Thanks,

Dave Montgomery
 
Re: LOAD FLOW CALCULATIONS

DV
It appears you have not setup your profile so you can not receive PM's.

Its this a 600 volt LF program or higher voltage?
I would like to see it. Where?

[ July 16, 2005, 11:05 PM: Message edited by: bob ]
 
Re: LOAD FLOW CALCULATIONS

A "Load Flow" analysis is an iterative process. You pick one number, run through a bunch of calculations, see how far off your original guess had been, make a better (i.e., more informed) guess, run through the calculations again, and stop when you get close enough to call it good. I did not think it possible for a spreadsheet to do this type of calculation. Are you sure you are using the right term?
 
Re: LOAD FLOW CALCULATIONS

Yes - I am using the right term.

A spreadsheet can be used to develop a load flow program for radial systems. It's a little more difficult for transmission grids (can be done, but it's a royal pain).

I've used this one for systems from 480V to 69KV. All I've put in now is conductors between the source and the load. For motor start applications, I have a transformer modeled. The results have been comparable to the high powered software.

I'll work on the "PM" profile business to see if I can figure it out.
 
Re: LOAD FLOW CALCULATIONS

Bob,

I think I set up my profile to accept PM's. Let me know if it doesn't work.

For now, I've written the program to accept voltages in KV. Instead of entering 480V, you'd have to enter ".48KV". There aren't many lines of code that would have to change to allow you to enter the voltage in volts.

Thanks for your interest.

Dave
 
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