ignore this question - I mistype mpc.gen - I can change the value already.
Another question: if I set
mpc.if.lims=[
1 -15 25;
];
what does this do?
On Sat, Jan 15, 2011 at 2:15 PM, Mooi Choo Chuah <m...@lehigh.edu> wrote:
> hi,
> how did I modify the Pg value of a particular entry in mpc.gen?
>
> e.g. if I want to modify row 3, column 2 of the mpc.gen to 0 before
> rerunning rundcpf, what should I do?
>
> On Thu, Jan 13, 2011 at 2:52 PM, Mooi Choo Chuah <m...@lehigh.edu> wrote:
>
>> hi,
>> I have another question:
>> I set mpc=loadcase('t_auction_case')
>> mpopt=mpoption('OUT_ALL',1)
>> and rundcpf(mpc,mpopt);
>>
>> the results.success=1 but
>> I got generator data
>> 75.97, 60.97, 21.59, 26.91, 19.2, 37.0 (for the 6 generators)
>> but when I look at the generator data for these 6 generators in
>> t_auction_case - it says the Pmax is [60,60,60,60,60,60]. Seemed like
>> generator 1, 2 have exceeded 60.
>>
>> Can someone pls explain to me why generator 1 and 2 is allowed to exceed
>> 60?
>>
>> The generator data does have 3 entries that say -30 at bus 7,15,30 (which
>> I believe it means dispatchable load) but don't quite truly understand what
>> this means. Can someone pls explain? does this mean the generator is allowed
>> to generate extra power?
>>
>> thanks
>> MC
>>
>> On Wed, Jan 12, 2011 at 5:31 PM, Mooi Choo Chuah <m...@lehigh.edu> wrote:
>>
>>> Hi,
>>>
>>>
>>> I read a 2005 paper written by Prof Sarosh Talukdar (Distributed Model
>>> Predictive Control
>>> for the Mitigation of Cascading Failures). His paper seemed to suggest
>>> that he did his analysis using Matpower (he cited Matpower manual Version
>>> 2.0". So, I suspect that may be his simulated scenarios were included in
>>> Matpower version 2.0 but removed somehow from later versions of Matpower.
>>>
>>> Any idea who I can ask about getting the .m files for these scenarios
>>> and whether it will still work with the latest Matpower version?
>>>
>>> MC
>>>
>>> On Wed, Jan 12, 2011 at 11:14 AM, Ray Zimmerman <r...@cornell.edu>wrote:
>>>
>>>> The mpc.if.map data is used by an example OPF extension used to impose
>>>> interface flow limits. It is mentioned briefly in the last paragraph of
>>>> section 6.4 of the manual. See help toggle_iflims for a description of
>>>> the input data.
>>>>
>>>> Regarding what happens when total load exceeds total generator capacity,
>>>> the OPF should never succeed in such a case. Make sure you are checking the
>>>> success flag. If you have a case where you believe it is converging to an
>>>> infeasible solution (total gen dispatch greater than total gen capacity), I
>>>> would like to see it. That would indicate a bug. In my tests, such cases
>>>> fail to converge.
>>>>
>>>> --
>>>> Ray Zimmerman
>>>> Senior Research Associate
>>>> 211 Warren Hall, Cornell University, Ithaca, NY 14853
>>>> phone: (607) 255-9645
>>>>
>>>>
>>>>
>>>> On Jan 10, 2011, at 6:04 PM, Mooi Choo Chuah wrote:
>>>>
>>>> Hi,
>>>> I am new to Matpower.
>>>>
>>>> can someone tell me what the mpc.if.map in this file do?
>>>> the comments say
>>>> ifnum branchidx
>>>> but there are 30 branches in case30 so what do the following lines mean?
>>>> 1 -12;// there is a comment line that says area 1 imports but why 4
>>>> lines that start with 1?
>>>> 1 -14;
>>>> 1 -15;
>>>> 1 -36;
>>>> 2 15;
>>>> 2 25;
>>>> 2 26;
>>>> 2 -32;
>>>> 3 12; // there is a comment line that says area 3 imports but why 6
>>>> lines that start with 3?
>>>> 3 14;
>>>> 3 -25;
>>>> 3 -26;
>>>> 3 32;
>>>> 3 36;
>>>>
>>>> I am trying to learn what needs to be done to study what happens when
>>>> the total load exceeds the total generator capacity
>>>> for case 9. By just running rundcopf('case9'), it will always succeed
>>>> even if I set the total load to exceed the total Pmax of all 3 generators.
>>>> So, I suspect I need to use runopf_w_res before I can study the failure
>>>> scenario when there is overload condition. Is this correct?
>>>>
>>>> MC
>>>>
>>>>
>>>>
>>>
>>
>
