Hi everyone,
I had a question about the CPF function in MATPOWER6.0 which I am using to
to check the limit induced bifurcation (LIB) points of different systems.
I noticed for case300, while the maximum generator var limits were being
respected, the minimum var limit of one generator was being violated at the
LIB. The generator at bus number 76 (generator status is 1), has a QG of 0
MVAr at the LIB whereas its minimum QG is 12 MVAr. Hence, the violation was
greater than the default tolerance for limit detection (0.01 MVAr).
Also, for an ERCOT test case, 33 generators were violating the max. var
limit, while 61 generators were violating the min. var limit out of 531
committed generators.
Here is a sample code I used:
mpcb=loadcase('case300');
mpct = mpcb; % set up target case with
mpct.bus(:, PD) = mpcb.bus(:, PD)*5; % and increased load
mpct.bus(:, QD) = mpcb.bus(:, QD)*5; % and increased load
mpct.gen(:, PG) = mpcb.gen(:, PG)*5; % and increased gen
mpopt = mpoption('cpf.stop_at', 'NOSE'*,'cpf.enforce_q_lims',1*,
'cpf.enforce_p_lims',0);
results = runcpf(mpcb, mpct, mpopt);
Am I doing something incorrectly or is there any additional options that I
should be setting?
Thank you and a happy new year to you!
Regards,
Shruti Dwarkanath Rao
Graduate Research Associate, Arizona State University
Tempe, AZ, 85281
650 996 0116
