Yes, makeYbus() assumes that the inputs are using internal ordering (i.e. that they have been converted via a prior call to ext2int() which also removes off-line equipment).
Ray On Mar 18, 2022, at 3:24 PM, Jovan Ilic <jovan.ilic...@gmail.com<mailto:jovan.ilic...@gmail.com>> wrote: Ray, Yes, Cf and Ct are calculated in makeYbus.m. I noticed that Cf and Ct have the same dimensions after disabling some lines and assumed that something was wrong. It turns out that the rows corresponding to disabled lines were set to all zeros with the same effect as taking them out. Not exactly the way I would do it but the end result is the same. Jovan On Tue, Mar 15, 2022 at 7:48 PM Ray Daniel Zimmerman <r...@cornell.edu<mailto:r...@cornell.edu>> wrote: While it is not impossible, I would be very surprised to discover that Cf and Ct (in makeYbus.m, I assume?) are incorrect, but if you can create a small example that demonstrates that they are incorrect, please file a bug report at https://github.com/MATPOWER/matpower/issues Thanks, Ray On Mar 11, 2022, at 9:12 AM, Jovan Ilic <jovan.i...@gmail.com<mailto:jovan.i...@gmail.com>> wrote: It seems that Cf and Ct calculations are wrong when some branches are disabled. Since this is fundamental data, I've been wondering what is the effect on higher level algorithms. I'll start digging through the code but maybe some of the developers could give me a quick suggestion about what to check. It is clear that Yf and Yt are also wrong while Yb is correct since makeYb does not use Cf and Ct to calculate it. Thanks, Jovan
