There is no additional cost of the unit is not used, which is the goal, right?
If it is used, you can simply manually subtract off the penalty amount to get
the original cost of that operating point.
Ray
> On Jul 2, 2015, at 1:17 PM, Nandu Balachandran <[email protected]> wrote:
>
> If I add a penalty to the cost of that generator to make it more expensive
> than the other units, I expect an increase in total system cost . Is there a
> way to get rid of that additional cost ?
> <>
> I hope adding a cost penalty could be done similar to Generation Reserve you
> explained in manual.
>
> Thanks,
> Nandu
> From: [email protected]
> <mailto:[email protected]>
> [mailto:[email protected]
> <mailto:[email protected]>] On Behalf Of Ray
> Zimmerman
> Sent: Thursday, July 2, 2015 11:36 AM
> To: MATPOWER discussion forum
> Subject: Re: Minimizing generation from one generator
>
> 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]
> <mailto:[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
>
