Hi,
I want to use dispatchable load in my work, but I have issues whenever I try to use it. The results of the OPF gives me positive values of Pg for my dispatchable loads. It seems very strange to me as I put the correct values for Pmax and Pmin for the fictious generators and when I check using "isload" it clearly gets that I have dispatchable load but the OPF does not get me negative values for Pg, thus all my dispatchable loads are outside their [Pmin, Pmax] boundary. None of my cases with dispatchable loads work, do you have an idea why? The error message is the following: MATPOWER Version 4.1, 14-Dec-2011 -- AC Optimal Power Flow MATLAB Interior Point Solver -- MIPS, Version 1.0, 07-Feb-2011 it objective step size feascond gradcond compcond costcond ---- ------------ --------- ------------ ------------ ------------ ------------ 0 34354.266 0.000145177 2.74983 8817.6 0 1 -26584.096 2.6085 8.10986e-005 3.28039 71.5144 1.3739 2 -16333.508 2.2816 3.32505e-005 1.06999 21.5867 0.280192 3 -4648.9026 3.069 2.14625e-005 0.766689 10.2045 0.443716 4 978.66593 2.5377 1.72341e-005 0.606444 6.07282 0.384163 5 7029.0382 0.8612 1.44116e-005 0.511965 4.89929 0.551103 6 39261.034 0.94397 1.24046e-005 0.754135 3.49051 1.89277 7 373268.42 1.0068 6.55614e-006 0.381628 1.78104 6.78036 8 393954.16 0.60311 6.34104e-006 0.122038 1.50898 0.0539719 9 394299.03 1.0444 6.33887e-006 0.0357471 1.49993 0.000853718 10 775476.9 1.0468 4.4557e-006 0.0300993 1.0427 0.942812 11 923044.66 1.0104 3.86301e-006 0.0278763 0.80815 0.18787 12 1161795.9 0.89595 3.09519e-006 0.0171514 0.64877 0.255884 13 1161809.2 0.99041 3.09515e-006 0.000738529 0.634124 1.13676e-005 14 1161815.7 0.75462 3.09508e-006 8.11485e-008 1.66624 5.54037e-006 15 1161815.7 0.78779 3.09508e-006 3.27326e-010 27.8727 4.83558e-008 16 1161815.7 0.98894 3.09508e-006 2.94949e-011 1.36126e+008 2.48268e-012 Numerically Failed Did not converge in 16 itérations. Thank you for help; I realize my question is very large as it might not work for a lot of reasons related to the cases but my concern is that my dispatchable loads have positive values for Pg which does not make any sense to me. Regards, Gamze
