Search found 9 matches

by Haithamtaha
3 years ago
Forum: Solvers
Topic: No feasible Found-BONMIN Solver for MINLP
Replies: 5
Views: 4250

Re: No feasible Found-BONMIN Solver for MINLP

Hello,

I was wondering if there are some tricks to speed up the operation and solution of MINLP BONMIN solver, it takes very long time.
by Haithamtaha
3 years ago
Forum: Solvers
Topic: No feasible Found-BONMIN Solver for MINLP
Replies: 5
Views: 4250

Re: No feasible Found-BONMIN Solver for MINLP

Thank you very much abhosekar :)
by Haithamtaha
3 years ago
Forum: Solvers
Topic: No feasible Found-BONMIN Solver for MINLP
Replies: 5
Views: 4250

Re: No feasible Found-BONMIN Solver for MINLP

Thank you abhosekar for your reply.

I tried RMINLP but using other solver IPOPT and it found an optimal solution in the cases in which BONMIN-MINLP couldn't find. Do you believe that i can rely on the output results of RMINLP ?
by Haithamtaha
3 years ago
Forum: Solvers
Topic: No feasible Found-BONMIN Solver for MINLP
Replies: 5
Views: 4250

No feasible Found-BONMIN Solver for MINLP

Hello All, I have a problem using BONMIN solver for MINLP problem optimization, i am trying different configurations, most of them went well and an optimal solution found but in one configuration a message appears that no feasible solution found, but it gives another message with best possible solut...
by Haithamtaha
4 years ago
Forum: Syntax
Topic: GAMS Extrinsic function
Replies: 1
Views: 2742

GAMS Extrinsic function

I am using GAMS Extrinsic function "randweibull" to generate a random wind speed based on the shape and scale parameters and it works fine, the used statements are shown below: $FuncLibIn stolib stodclib function randweibull /stolib.dweibull / Set N / 1*24 /; Set K / Weibull /; Parameter r...
by Haithamtaha
4 years ago
Forum: Solvers
Topic: What are the cause of the infeasibility ?
Replies: 2
Views: 28953

Re: What are the cause of the infeasibility ?

Thank you very much, i have just seen your reply. i didn't join the forum long time ago :)
by Haithamtaha
4 years ago
Forum: Solvers
Topic: What are the cause of the infeasibility ?
Replies: 2
Views: 28953

What are the cause of the infeasibility ?

Hello All, i am working on an optimization problem to maximize an objection function in power system load flow MINLP problem using BONMIN solver. Unfortunately the below message appears when the running process is finished: EXIT : Converged to a point of local infeasibility. Problem may be infeasibl...
by Haithamtaha
4 years ago
Forum: Modeling
Topic: Load Flow of 33 buses distribution system, current in between buses equal zero
Replies: 1
Views: 3219

Load Flow of 33 buses distribution system, current in between buses equal zero

I Have a problem using GAMS in load flow modelling on 33 buses distribution system, The problem is that when I display the values of the current in between buses C(I,j,t) after running it gives me all zeros and all voltages equal 1, why the voltage values are fixed at all buses and why the current a...
by Haithamtaha
4 years ago
Forum: Solvers
Topic: the solver found no feasible solution
Replies: 2
Views: 3381

the solver found no feasible solution

Hello all, I am now working to build the model a published paper using GAMS. I successfully went through all the error messages appeared while developing and running the model and all have been resolved, now the model works with no error but unfortunately the solver found no feasible solution. I don...