The most straightforward way I can think of is to simply add a penalty to the
cost of that generator to make it more expensive than the other units.
Ray
> On Jul 2, 2015, at 11:24 AM, Nandu Balachandran <[email protected]> wrote:
>
> Dear Dr. Zimmerman,
>
> If I run optimal power flow using runopf(), is it possible to give another
> optimization parameter on top of that?
>
> I want generation from one generator to be minimized minimizing overall
> system cost. This generator should be included in opf only if runopf cannot
> converge to a solution. This is one of the cheapest generator in the system.
> So unit commitment starts with dispatching this generator first.
>
> What is the best way to achieve this ?
>
> Thank you once again for all help and support .
>
> Thanks,
> Nandu Balachandran
> The University of New Orleans
> <>
> From: [email protected]
> <mailto:[email protected]>
> [mailto:[email protected]
> <mailto:[email protected]>] On Behalf Of Ray
> Zimmerman
> Sent: Monday, June 29, 2015 9:55 AM
> To: MATPOWER discussion forum
> Subject: Re: Unit Commitment
>
> The order of decommitment is not something that is saved in results anywhere,
> but it is displayed in the verbose output if you set verbose to 2 or higher.
>
> Ray
>
>
>
> On Jun 28, 2015, at 1:10 AM, Nandu Balachandran <[email protected]
> <mailto:[email protected]>> wrote:
>
> After executing runupf function, is it possible to get the order at which
> generators are committed? ( Usually least expensive first ; It depends may
> vary with total load and quadratic cost function).
>
> Is there any function which gives me the order of unit decommitment?
>
> Thanks,
> Nandu
>
>
> See Table 6-1 in the User’s Manual
> <http://www.pserc.cornell.edu/matpower/docs/MATPOWER-manual-5.1.pdf> for
> results of the OPF, including LAM_P which is the LMP and see Section 4.4 for
> a description of MATPOWER’s functions for computing shift factors.
>
> Ray
>
> On Jun 16, 2015, at 4:14 AM, lavanya arubolu <[email protected]
> <mailto:[email protected]>> wrote:
>
> Dear Nandu Balachandran,
> There is inbuilt function in MATPOWER
> to know the LMPs at all the buses. If you want to calculate LMPs for a
> particular system run OPF and see the results, in OPF results one function
> called Lamada this indicates LMPs at all the buses. I think direct
> calculation of GSF is not possible using MATPOWER we have to write code for
> this. I hope this will clarify your doubt.
> Thank you
>
>
> On Tue, Jun 16, 2015 at 11:14 AM, Nandu Balachandran <[email protected]
> <mailto:[email protected]>> wrote:
> Dear Dr. Zimmerman,
>
> Does MATPOWER has some inbuilt function for calculating LMP at each node? Is
> there a way to calculate Generator Shift Factor after calculating OPF
> solution using "runopf ( )" ?
>
> Thanks and appreciate your help
> -
> Thanks,
> Nandu Balachandran
> The University of New Orleans
> [email protected] <mailto:[email protected]>
> Ph No: +1 (504) 505-1087
>
