Question: out-of-service status

generator in each loop so I do not want to erase it from my case) Thank you for your help, Gamze Dogan

OPF with current limit

Hi, I want to implement the OPF with current limit of the branches, I did using the option 'OPF_FLOW_LIM',2 If I understand well, this will limit my current in all branches (exept one involving the slack bus) to 1 pu? Is this right? How can I modify it to have a limit at 1.2 pu? Then I

RE: OPF with current limit

that? Thank you for your help, Gamze From: abhy...@mcs.anl.gov To: matpowe...@list.cornell.edu Subject: Re: OPF with current limit Date: Wed, 16 Jul 2014 10:54:55 + On Jul 16, 2014, at 2:04 AM, Gamze Dogan gamgam...@hotmail.com wrote: Hi

OPF with current constraints

a solution that respects the current constraints, I still want that it gives me an answer, but I want it to have a very high cost Is it possible to do that? SHould I implemented the current constraints using the user-defined constraints? Thank you for your help, Gamze Dogan

Problem using dispatchable loads

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

Branch flow limits in OPF

Dear all, I have a question regarding the power flow limits in the OPF. The flow is limited by the branch value rateA. I wanted to calculated the pourcentage of flow in my lines after the OPF succeeded. I did it this way: V(d,1) = results.bus(d, 8) * exp(1j * results.bus(d, 9)*pi/180);

RE: Branch flow limits in OPF

, the “flow” constraint in the AC OPF is on apparent power (in the DC OPF, it’s active power), not on current, which probably explains what you are seeing. See the 'opf.flow_lim' option to change the default. Ray On Mar 25, 2015, at 4:55 AM, Gamze Dogan gamgam...@hotmail.commailto:gamgam

OPF question convergence

Dear all, I have a very strange problem using the matpower function runuopf. I launch several iteration of runuopf and one case give me a non convergent solution (success flag is zero). Within my code, I save the values the runuopf function uses, so it goes: save casefileresultsOPF =

Opf convergence problem

Dear all, I have a convergence problem when running the OPF. When I used the Matpower vesion 4.1 my casefile converged in pf but not in opf. I have recently installed the new version of Matpower 5.1 and when running the opf I get the following message which I do not understand: ??? Error

FW: Opf convergence problem

Dear all, To complete my previous e-mail (see below) , I also get the following message: Warning: Element(s) of class 'opf_model' do not match the current constructordefinition. The element(s) have been converted to structures If anybody can help me resolve the problem I would really appreciate

OPF convergence issue with piecewise linear cost

Dear all, I wanted to compare the results of the OPF with the two types of model for the generator costs (polynomial and piecewise linear cost). So first, I launched an OPF with polynomial cost which converged, then I launched one with linear cost and it does not converge. I know that my

OPC with piecewise linear cost: non convergent

Dear all, I wanted to compare the results of the OPF with the two types of model for the generator costs (polynomial and piecewise linear cost). So first, I launched an OPF with polynomial cost which converged, then I launched one with linear cost and it does not converge. I know that my