MATPOWER includes transformer taps as fixed parameters in the model, but not as 
optimization variables in the OPF or automatically updated parameters in the 
power flow. I agree that both would be desirable features, but I don't know 
if/when I might have the time available to implement them. Others are always 
welcome to contribute code.

-- 
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645




On Jan 27, 2013, at 1:53 AM, Khirad Dhabhar <[email protected]> wrote:

> Dear sir
> 
> I just realized that matpower does not include transformer taps in the power 
> flow as well as optimal power flow. Please correct me if i am wrong and tell 
> me how to specify the transformer taps. If i am correct then i would suggest 
> that transformer taps be added to make the solution more robust.
> 
> Thank you 
> 
> Khirad
>   
> 
> -- 
> Friendship is like a red rose with a green stem

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