I am assuming you are using PF, not OPF ... 1. You can model it with a gen with PG = 0, then QG will be solved to keep the bus voltage at the set point. Or you can model it as a reactive injection (in QD column of bus matrix). Or you can model it as a capacitor bank (BS column of bus matrix).
2. By default MATPOWER's power flow enforces the voltage set point at the expense of the Q limit. -- Ray Zimmerman Senior Research Associate B30 Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Aug 1, 2013, at 3:30 AM, Power Engineer <[email protected]> wrote: > 1. for modeling SVC by zero P-output generator does we need a reference > voltage? Can wemodel SVC by a reactive power injection like capacitor bank? > 2. I use default MATPOWER options for PF. > > From: "[email protected]" <[email protected]> > To: [email protected] > Sent: Wednesday, July 31, 2013 2:27 PM > Subject: RE: PF by removing Line > > 1, zero P-output might imply SVC or synchronous condenser > 2. your PF might have option that ignore the Q-limit. > > BR//Yongtao > > From: [email protected] > [mailto:[email protected]] On Behalf Of Power > Engineer > Sent: 31. juli 2013 10:38 > To: MATPOWER forum > Subject: PF by removing Line > > Dear all > I have 2 questions > 1. in case 57 and 118 we have some generators with zero active output, Do > they model special equipment? > 2. I run PF for case 57 by removing line between 8 and 9 while the power flow > is converging the reactive limit of generator at bus 9 violated. > results.success > > ans = > > 1 > > results.gen(:,1:5) > > ans = > > 1 511.91 142.3 200 -140 > 2 0 -1.9005 50 -17 > 3 40 16.317 60 -10 > 6 0 6.774 25 -8 > 8 450 34.892 200 -140 > 9 0 86.611 9 -3 > 12 310 151.03 155 -150 > > > > ************************************************************************************** > The contents of this e-mail message and any attachments are confidential and > are intended solely for the addressee. If you have received this transmission > in error, please immediately notify the sender by return e-mail and delete > this message and its attachments. Any unauthorized use, copying or > dissemination of this transmission is prohibited. Neither the confidentiality > nor the integrity of this message can be vouched for following transmission > on the Internet. > ************************************************************************************** > >
