As long as the generator cost in case 2 is set to be lower than the LMP at bus
17 in case 1, the two cases should give the same answer to within the
termination tolerances the solver. And the OPF does not make a distinction
between PV and PQ buses, so it doesn’t matter which you choose when running an
OPF.
Are the differences you see very small? If so, it’s probably just related to
numerical tolerances.
Ray
> On Jun 26, 2015, at 7:09 PM, Mario Daniel Baquedano Aguilar
> <[email protected]> wrote:
>
>
> Dear All,
>
> I need to run an AC OPF on the 39 Bus New England System_10Generators. I need
> to add a 100 MW Photovoltaic System to Bus 17 with no generation cost and no
> reactive power generation capacity.
>
> The question is :
>
> Should i obtain the same results after running an AC OPF if i model the
> Photovoltaic Generation on Bus 17 like:
>
> Case 1: Negative load:
>
> P= -100[MW] and Q=0[Mvar], Bus Type: PQ
>
> or
>
> Case 2:Like Generator with no reactive power injection capacity and with "0"
> (zero) generation cost?
>
> P= 100[MW] and Q=0[Mvar],
>
> For case2: Should be the Bus Type: PQ or PV?
>
> Wich is the correct way to model the Photovoltaic Generation with no
> generation cost and no reactive power generation capacity?
>
> I already tried to run an AC OPF modelling the Photovoltaic Generation like
> in case 1 and another one like in case 2, and after comparing the "Branch
> Data" results of both cases, the results are not exactly the same ones.
>
> I appreciate beforehand if someone can help me with any suggestion.
>
>
> Kind Regards!
>
> Mario Daniel Baquedano, E. E
> Master's Degree Student
> IEEE-UNAH- HONDURAS SECTION
> [email protected] <mailto:[email protected]>
> [email protected] <mailto:[email protected]>
> San Juan, Argentina.
> IEEE ADVANCING TECHNOLOGY FOR HUMANITY
>
>
>
