It looks like the shadow prices on the voltage limits are extremely large
numbers and the end up being displayed in the table with no spaces between the
columns. You can double check the actual values by saving the results and
looking at them directly.
define_constants;
results = runopf('mycase');
results.bus(1, MU_VMAX)
results.bus(2, MU_VMAX)
results.bus(6, MU_VMIN)
This essentially means that the system has to be dispatched pretty far out of
merit order to be able to satisfy those voltage limits.
--
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
On Apr 26, 2013, at 6:05 AM, Jiashen Teh <[email protected]> wrote:
> Dear Dr Ray ,
>
> When my AC OPF converges, I encounter some weird values as below:
>
>
> Bus # Vmin mu Vmin |V| Vmax Vmax mu
> ----- -------- ----- ----- ----- --------
> 1 - 0.950 1.050 1.050197274483.423
> 2 - 0.950 1.050 1.05071471472.703
> 6228264727.143 0.950 0.950 1.050 -
>
> Please shed some light on this. Thanks as always!
>
> Yours sincerely,
>
> Jiashen Teh
> PhD Student
> Electrical Energy & Power Systems Group, School of Electrical & Electronic
> Engineering
> Ferranti Building (B18), The University of Manchester, M13 9PL, United Kingdom
> Tel: +44 (0) 161 306 2263; Mobile: +44 (0) 792 322 4864
