MIPs and FMINCON solvers

2014-02-14 Thread amel zerigui
Dear all, By using Matpower for OPF solution with several solvers I recognize that the solution has a bit difference, maybe you tell me that this difference is not important for OPF, but I found it crucial if I used the obtained point as initial point in my research, bellow you find an exampl

Re: ask in matpower

2014-02-14 Thread Ray Zimmerman
The point of my previous post was that the power flow was doing what you told it to (assuming I was correct about you specifying it as a PV bus). If you want the power flow to solve for the voltage at the bus, given a specified reactive power injection (which is what you seem to be expecting), t

Re: MIPs and FMINCON solvers

2014-02-14 Thread Ray Zimmerman
All of the AC OPF solvers are numerical solvers with termination tolerances. If you want more precise solutions, you have to make these tolerances smaller. Since they solve for local optima, it is always possible that different algorithms will find different local optima, but in your case I thin

RE: MIPs and FMINCON solvers

2014-02-14 Thread amel zerigui
Thanks From: r...@cornell.edu Subject: Re: MIPs and FMINCON solvers Date: Fri, 14 Feb 2014 15:39:04 -0500 To: matpowe...@list.cornell.edu All of the AC OPF solvers are numerical solvers with termination tolerances. If you want more precise solutions, you have to make these tolerances smaller