Dear Houssem,
Please note that transmission lines have charging susceptance (i.e., mpc.branch(:, BR_B)), and its contribution to the reactive power is not listed in the pretty-printed output. Best regards, Gang From: [email protected] [mailto:[email protected]] On Behalf Of Houssem Sent: Sunday, April 03, 2016 11:29 AM To: MATPOWER discussion forum Subject: question about losses Dear All I have a small question about losses in matpower . I have run a small program with 3 buses in matpower 4.1. The obtained results are: ================================================================================ | Branch Data | ================================================================================ Brnch From To From Bus Injection To Bus Injection Loss (I^2 * Z) # Bus Bus P (MW) Q (MVAr) P (MW) Q (MVAr) P (MW) Q (MVAr) ----- ----- ----- -------- -------- -------- -------- -------- -------- 1 1 2 179.33 116.79 -170.96 -102.71 8.369 16.74 2 1 3 39.03 20.69 -38.85 -22.98 0.183 0.55 3 2 3 -229.04 -147.29 238.85 166.92 9.813 19.63 -------- -------- Total: 18.365 36.91 my question is, in line 2 Qlosses should be (20.69)+(-22.98) =-2.29 MVar. However matpower displays 0.55MVar !!! is there any explanation to that? same for branch 1. Regards Houssem
