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On Nov 27, 2013, at 11:42 AM, Hamed Pourgharibshahi wrote:
> Dear Dr.Ziverman
> Please don't send me these emails.
> Best regerds
> Hamed Shahi
>
>
> On Wed, Nov 27, 2013 at 8:36 PM, Ray Zimmerman <[email protected]> wrote:
> I suppose it depends … do you want to minimize costs in the other areas as
> well, subject to fixed exchange schedules? If so, yes, I think working with
> toggle_iflims.m is best. If, on the other hand, you are only interested in
> minimizing cost in one area, with the dispatches fixed in other areas, then I
> think fixing those dispatches (PG=PMIN=PMAX) is sufficient to fix all of the
> interface flows as well and you don’t even need additional interface flow
> constraints.
>
> --
> Ray Zimmerman
> Senior Research Associate
> B30 Warren Hall, Cornell University, Ithaca, NY 14853
> phone: (607) 255-9645
>
>
>
> On Nov 26, 2013, at 8:10 PM, Henry Lin <[email protected]> wrote:
>
>> Dear Dr. Zimmerman,
>>
>> Thanks a lot for your help.
>>
>> I want to minimize the cost of generation of one area subject to a fixed
>> value for the exchange between all the other areas. Shall I still work with
>> toggle_iflims.m as you suggested or you have some other suggestions?
>>
>>
>> Thanks a lot.
>>
>> Best,
>>
>> Henry
>>
>>
>>
>>
>> 2013/11/26 Ray Zimmerman <[email protected]>
>> Sorry, somehow my previous reply never got sent …
>>
>> So, what exactly do you want to optimize, if you are specifying the import
>> and export? Are you saying you want to minimize cost of generation in both
>> areas subject to a fixed value for the total exchange between the two areas?
>> If so, the best you can do is constrain the net flow (DC approximation) to
>> equal your specified value. The easiest thing is probably to start with the
>> code in toggle_iflims.m and modify it to use an equality constraint instead
>> of an inequality constraint on the interface flow.
>>
>> --
>> Ray Zimmerman
>> Senior Research Associate
>> B30 Warren Hall, Cornell University, Ithaca, NY 14853
>> phone: (607) 255-9645
>>
>>
>>
>> On Nov 26, 2013, at 10:43 AM, 车 <[email protected]> wrote:
>>
>>> Hi Matpower users,
>>>
>>> Anybody have any ideas about how to calculate opf with the total import
>>> power and export power specified?
>>>
>>>
>>> Thanks a lot
>>>
>>> Lin
>>>
>>> On Nov 25, 2013, at 8:59, Henry Lin <[email protected]> wrote:
>>>
>>>> Dear all,
>>>>
>>>> I am trying to use OPF with area interchange being specified. I know how
>>>> much power is going to be import and export.
>>>>
>>>> How can I do it using Matpower?
>>>>
>>>>
>>>> Thanks,
>>>> Henry
>>>
>>>
>>>
>>>
>>
>>
>
>
