MATPOWER does not model automatic tap changers of transformers. However, you 
can change the taps manually and re-run the power flow or OPF. I suppose you 
could write your own algorithm to automatically adjust them, but MATPOWER 
doesn't do it for you.

-- 
Ray Zimmerman
Senior Research Associate
B30 Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645



On Oct 24, 2013, at 11:43 AM, Rasool Jafari <[email protected]> wrote:

> Hello
> I have downloaded MATPOWER program recently and I am very happy to find this 
> useful program, thank you for this valuable idea.
> I have a question about MATPOWER: Does this program model automatic tap 
> changer of transformers? If not is there any solution to do that?
> Thanks a lot.
> 
> 
> 

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