Again, the easiest way to accomplish this may be by adding a set of (negative) 
generators to represent these other demands. You can then add constraints to 
restrict them as needed.

    Ray


> On Nov 27, 2018, at 8:13 AM, Sergio Garcia Marin <[email protected]> 
> wrote:
> 
> Thanks for the reply Ray, 
> 
> I think I can achieve the non-supply demand througout dispatchable loads. But 
> what if I want to add a demand that is also a variable of other 
> sircumstances, then I  would need specific varibles to model this demands and 
> also a way to add them into the power nodal balance equations... I'll keep 
> working on this.
> 
> 
>  <http://www.gipem.co/>
> 
> 
> El lun., 26 nov. 2018 a las 14:40, Ray Zimmerman (<[email protected] 
> <mailto:[email protected]>>) escribió:
> Currently MATPOWER does not provide a way to eliminate or modify the existing 
> power balance constraints. However, can you accomplish what you want with a 
> set of appropriately priced and constrained generators? Or with dispatchable 
> loads?
> 
>     Ray
> 
> 
>> On Nov 22, 2018, at 9:37 AM, Sergio Garcia Marin <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Dear all,
>> 
>> I want to use the extended OPF formulation but i need to modify the power 
>> flow implicit constraints, or better, eliminate them to created my own ones 
>> i.e. I want to add non-supply demand as a varible with high cost, so i need 
>> to include this into the nodal power equations balance, if I add this 
>> constraints in the extended formulation, would this be in conflict with the 
>> implicitd nodal balance constraints included in matpower?
>> 
>> Thanks in advance,
>> 
>> Sergio G.M.
>> UNAL-Mz
>>  <http://www.gipem.co/>
> 

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