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
>>>
>>>
>>>
>>
>
