________________________________ From: Alexandra Kapetanaki Sent: 27 February 2013 09:47 To: [email protected] Subject: matpower-problem
Dear Dr Ray,
My name is Alexandra and I am phd student at the University of Manchester.
I am writing you because I face difficulties when I use matpower for the IEEE
RTS 24 network.
More specifically I have the following error message:
Attempt to reference field of non-structure array.
Error in qps_ot (line 260)
kl = find(lam.eqlin < 0); %% lower bound binding
Error in qps_matpower (line 240)
[x, f, eflag, output, lambda] = ...
Error in dcopf_solver (line 222)
[x, f, info, output, lambda] = qps_matpower(HH, CC, A, l, u, xmin, xmax, x0,
opt);
Error in opf_execute (line 71)
[results, success, raw] = dcopf_solver(om, mpopt);
Error in opf (line 225)
[results, success, raw] = opf_execute(om, mpopt);
Error in runopf (line 96)
[r, success] = opf(casedata, mpopt);
Error in nonsequential_modified_new (line 244)
results=runopf(mpc,mpopt);
Actually my simulation runs for many iterations and in each of them some lines
failed randomly and so there is the possibility that there is no voltage
reference bus in each island.
For this reason in each iteration I check if the red lines in the attached file
are connected with the network or not and if one of the them has failed I
restore it in order to avoid setting
voltage reference to the islanded buses. Therefore, in each iteration the red
lines are connected with the network and so one voltage reference bus in bus 13
is adequate.
However, I face the same error message after few iterations.
Do you have any idea about this problem?
Is there any condition that I didn't take into consideration?
Thank you in advance,
I look forward for your feedback,
Kind Regards,
Kapetanaki Alexandra
[X]
[X]
[X]
[X]
[X]
[X]
[X]
[X]
<<attachment: matpower-problem_(1).zip>>
