Search found 12 matches

by Kasi Vemalaiah
5 months ago
Forum: Modeling
Topic: Linearization of AC Optimal Power Flow
Replies: 1
Views: 7255

Re: Linearization of AC Optimal Power Flow

Hi,

You can look at this code for the AC OPF GAMS code. You can easily implement your equations.

https://www.gams.com/latest/psoptlib_ml ... 24bus.html

Kasi
by Kasi Vemalaiah
2 years ago
Forum: Syntax
Topic: Query in Scenario reduction
Replies: 5
Views: 3987

Re: Query in Scenario reduction

Hi,

I did not get any response from the team.
by Kasi Vemalaiah
2 years ago
Forum: Modeling
Topic: Problem with second order cone constraint
Replies: 1
Views: 1602

Problem with second order cone constraint

Hi,
image.png
image.png (2.98 KiB) Viewed 1602 times
I wrote the above SOCP constraint as below

cons_cone(i).. sqrt{sqr[x1(i)]} =l= x2(i);

But it is detecting as a nonlinear constraint with MOSEK/CPLEX solvers. What is the problem with it?

Regards,
Vemalaiah
by Kasi Vemalaiah
3 years ago
Forum: Syntax
Topic: Query in Scenario reduction
Replies: 5
Views: 3987

Query in Scenario reduction

Dear sir/ma'am, I am Kasi, pursuing PhD in IIT Roorkee, India. I have generated 1000 scenarios using norm pdf in GAMS. PFA for GAMS studio file. I want to reduce generated 1000 scenarios to 50 scenarios using the SCENRED2 tool in GAMS. These reduced scenarios will be used for stochastic programming....
by Kasi Vemalaiah
3 years ago
Forum: Solvers
Topic: Parallel processing with CPLEX
Replies: 3
Views: 4907

Re: Parallel processing with CPLEX

Thank you so much.
by Kasi Vemalaiah
3 years ago
Forum: Solvers
Topic: Parallel processing with CPLEX
Replies: 3
Views: 4907

Parallel processing with CPLEX

Dear Experts and Colleagues, I formulated my optimization problem as MISOCP and trying to solve with CPLEX solver. The following snapshot gives an idea about the optimization problem regarding no of variables and constraints. image.png After running the problem, it is not converging to default the o...
by Kasi Vemalaiah
3 years ago
Forum: Solvers
Topic: Not convex with MOSEK solver
Replies: 7
Views: 6080

Re: Not convex with MOSEK solver

As I said before, MOSEK is strict for what it expects as SOCP constraints. The definition of the various SOCPs can be found e.g. here: https://www.gams.com/latest/docs/UG_LanguageFeatures.html#UG_LanguageFeatures_ConicProgramming_Intro. So you have a rotated quadratic cone for MOSEK you can't have ...
by Kasi Vemalaiah
3 years ago
Forum: Solvers
Topic: Not convex with MOSEK solver
Replies: 7
Views: 6080

Re: Not convex with MOSEK solver

Thank you bussieck. It's working now.
by Kasi Vemalaiah
3 years ago
Forum: Solvers
Topic: Not convex with MOSEK solver
Replies: 7
Views: 6080

Re: Not convex with MOSEK solver

Dear sir,

I am attaching my code. Please, help me.
loadflow_33bus.gms
(4.51 KiB) Downloaded 285 times
.