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 Post subject: IEEE 1584 vs ARCPRO 3.0 - the new version
PostPosted: Wed Nov 29, 2017 12:08 pm 
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Joined: Fri Apr 15, 2011 7:43 am
Posts: 155
Location: Colorado
As some of you know the new ARCPRO 3.0 is out for download. They have added 3 phase to the options.

Has anyone heard or know which is better? More accurate?

They don't seem to agree???


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 Post subject: Re: IEEE 1584 vs ARCPRO 3.0 - the new version
PostPosted: Wed Nov 29, 2017 7:48 pm 
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Joined: Tue Oct 26, 2010 9:08 am
Posts: 1822
Location: North Carolina
I doubt they will ever agree all that well. ArcPro is basically a physics modelling approach whereas IEEE 1584 empirical method (to distinguish it from the other models in that method) is based on curve fitting to test data. They might be close but never identical because the underlying equations are totally different both in form and nature.

But here's the fundamental importance of ArcPro. The test set for IEEE 1584 only allows the curve fitting to be extended up as high as 15 kV. Above that point I've heard recent rumor that Kinetrics (ArcPro) has tested above 15 kV but I haven't seen any published results. Since ArcPro is physics based theoretically it will work with ANY conditions unlike IEEE 1584 that is far more limited so ArcPro is what we have to model distribution voltages above 15 kV.

I don't like OSHA's argument for using ArcPro. Basically above 15 kV they say that Duke Heat Flux (another physics model) is too low, Lee is too high (no argumen there!) and thus ArcPro is "just right" based purely on the results it produces, not test data. For all we know Duke heat flux model might be closer to reality.


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