Hi Dr Zimmerman,

 Thank you, it was my mistake. Apologies.

Regards
 Tom



On Fri, Aug 1, 2014 at 9:08 PM, Ray Zimmerman <[email protected]> wrote:

> There’s always the possibility of a bug, but I’d be a bit surprised in
> this case. Unless you have additional user-defined costs, you can easily
> compute the objective function value yourself using the totcost()
> function, or even by explicitly using the quadratic coefficients to compute
> the cost of each gen.
>
> --
> Ray Zimmerman
> Senior Research Associate
> B30 Warren Hall, Cornell University, Ithaca, NY 14853  USA
> phone: (607) 255-9645
>
> On Aug 1, 2014, at 10:16 AM, Tommy k <[email protected]> wrote:
>
> Hi
>
>  I have the some cost functions of the following format which I believe is
> still a *convex* cost function. With large initial cost and  a negative
> 1st
> order coefficient.
>
> abc.gencost = [
> 2 0 0 3 0.54376    -229.78     145993.63;
> ....
> ]
>
> runopf converges and I am getting lambda's in the correct ranges. However
> the object function is displaying a very, very large number.  Could there
> be a bug in the display of the objective function?
>
> Regards
>   Tom
>
>
>

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