Yes. See help makeJac. The value of the second argument determines whether to return the full or reduced Jacobian.
So it sounds like you want to use … Jac = makeJac(mpci); Note, the second argument defaults to a false value. Ray On Sep 15, 2020, at 1:12 AM, Kaled Zareer <[email protected]<mailto:[email protected]>> wrote: Thank you Dr. Ray. I tried the command Jac = makeJac(mpci, 1) for the 118-bus system. I got a (236 X 236) matrix. You know that there are slack bus, PV buses, and PQ buses in the system. Thus, my assumption is to get a matrix with a smaller size. Is there any command to consider this point? Thanks in advance Khaled On Monday, September 14, 2020, 10:04:50 AM EDT, Ray Daniel Zimmerman <[email protected]<mailto:[email protected]>> wrote: Try this … mpc = loadcase(<your case>); mpci = ext2int(mpc); % convert to internal bus numbering Ybus = makeYbus(mpci); Jac = makeJac(mpci, 1); — Ray On Sep 14, 2020, at 2:09 AM, Kaled Zareer <[email protected]<mailto:[email protected]>> wrote: Hi all, I am a beginner at Matpower. I read the manual but I am confused about how we can obtain the jacobian matrix and Ybus. I see that there are Power Flow Derivative Functions, but I don't know how I can use them. I appreciate if someone provides a simple example. Thanks in advance Khaled
