Try this. It worked for me:
define_constants;
mpc = loadcase('case30');
size(mpc.branch,1);
nb = size(mpc.branch,1) + 1;
mpc.branch(nb, F_BUS:ANGMAX)= [1380.060.180.02656565001-360360];
mpc.branchcost(42, MODEL)=2;
runopf(mpc);
You must add the other branch variables. Like status and angles. Just use
standard values and you will see no changes.
Em Domingo, 27, Abril 2014 11:30:27, Michael Stergides
<[email protected]> escreveu:
Many many thanks sir.
Seems to be working now.
Thank you very very much!
:)
Best regards,
M.S.
On Apr 27, 2014, at 03:11 AM, "tao.huang" <[email protected]> wrote:
Sorry, I didn't check the manuel and think carefully, it should be BR_STATUS.
>There is still a mistake in the line, pls try this:
>mpc.branch(nb , [F_BUS:RATE_A, STATUS])=[13 8 0.06 0.18 0.02 65 1];
>
>
>From:[email protected]
>[mailto:[email protected]] On Behalf Of Michael
>Stergides
>Sent: Sunday, April 27, 2014 12:00 PM
>To: MATPOWER discussion forum
>Subject: Re: Branch Addition
>
>Greetings.
>It shows a dimension mismatch again.
>It also shows an error on this line:
>mpc.branch(nb , F_BUS:RATE_A, STATUS)=[13 8 0.06 0.18 0.02 65 1];
>I changed the STATUS bit to BR_STATUS because this is how it's shown in the
>manual, but it still gives me an error.
>Not really sure what to do now...
>
>I cannot understand how to manipulate how many columns my new row (i.e. new
>branch) is going to have.
>Thank you very much for the quick response.
>Hope for some more elaboration.
>
>
>On Apr 26, 2014, at 08:07 AM, "tao.huang" <[email protected]> wrote:
>
>>The safest way to avoid dimension mismatch is to initialize the newly added
>>row. For example:
>>
>>define_constants;
>>mpc = loadcase('case30');
>>size(mpc.branch,1);
>>nb = size(mpc.branch,1) + 1;
>>mpc.branch(nb, size(mpc.branch,2)) =0; %% in this way even you extended the
>>columns of the matrix somewhere, it will guarantee the same dimentison.
>>mpc.branch(nb , F_BUS:RATE_A, STATUS)=[13 8 0.06 0.18 0.02 65 1];
>>mpc.branchcost(42, MODEL)=2;
>>runopf(mpc);
>>
>>From:[email protected]
>>[mailto:[email protected]] On Behalf Of MICHAIL
>>STERGIDIS
>>Sent: Saturday, April 26, 2014 4:38 PM
>>To: MATPOWER discussion forum
>>Subject: Re: Branch Addition
>>
>>Thanks for the response.
>>I tried to change that but it shows an error of dimension mismatch.
>>I find that peculiar since all the other lines on the branch matrix have
>>these dimensions.
>>Any clues as to how I change that?
>>
>>
>>On Apr 26, 2014, at 4:44 PM, Huang Tao <[email protected]> wrote:
>>
>>status of the branch is still 0.
>>>在 2014-4-26 下午3:25，"MICHAIL STERGIDIS" <[email protected]>写道：
>>>Dear all,
>>>>in order to reduce congestion on a line, my project demands an additional
>>>>line with another bus.
>>>>Specifically, I want to add a line between busses 13 and 8 on the case 30
>>>>file.
>>>>In doing so, I should be able to reduce the amount of load the line has
>>>>which is related to the rateA figure.
>>>>I have managed to make a bug-free bit of code so the opf runs and shows the
>>>>matrix with the particular data, however when I run it the line I have
>>>>added shows no power flow.
>>>>My code is the following:
>>>>
>>>>define_constants;
>>>>mpc = loadcase('case30');
>>>>size(mpc.branch,1);
>>>>nb = size(mpc.branch,1) + 1;
>>>>mpc.branch(nb , F_BUS:RATE_A)=[13 8 0.06 0.18 0.02 65];
>>>>mpc.branchcost(42, MODEL)=2;
>>>>runopf(mpc);
>>>>
>>>>I would really appreciate a helping hand as I am quite stuck,
>>>>thank you all very much in advance.
>>>>
>>>>Best regards,
>>>>Michael Stergides
>>
