Fabian Schmid
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Activity overview
Latest activity by Fabian Schmid-
Fabian Schmid commented,
Hi Ronald, ok thanks I will try to further develop the model with these hints.Fabian
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Fabian Schmid commented,
Hi Ronald, you are totally correct that is the puzzle ; ) Thanks for your support!
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Fabian Schmid commented,
Hi Ronald, thanks for your quick reply.I did not tested the above model so far, as it did not yet converge for a timeframe which holds al least two months. But I created as a first step a simpler m...
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Fabian Schmid created a post,
Mixed-Integer Quadratic Programming (MIQP) model does not converge
AnsweredHi, I created a mixed integer quadratic optimization model in pyomo and want to solve it using gurobi. My model uses a hourly timeseries of a single year, which describes the costs associated with ...
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Fabian Schmid commented,
Thanks a lot for this hint, this solved my issue!
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Fabian Schmid created a post,
Gurobi with WorkLimit and pyomo
AnsweredHi, I am using gurobi with a defined WorkLimit to solve a pyomo MILP. In case the MILP is infeasible I can nicely access the solver status, which indicates "termination condition: infeasibleOrUnbou...
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Fabian Schmid commented,
Hi Andrea, I could identify some improvements with the changing of the recommended solver settings. But nevertheless when the problem changes, identified parameters might be again not-optimal.BestF...
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Fabian Schmid commented,
Dear Maliheh, thank you very much for your feedback and recommendations. I will experiment with the parameters you mentioned, thanks for the support. Fabian
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Fabian Schmid commented,
Following the gurobi log for the model with larger energy system component sizes.I increase MIPGap to 2e-3 to reduce runtime. But it is still obvious that Gurobi needs most of the time to close the...
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Fabian Schmid created a post,
Advice on how to speed up of MILP (Pyomo with Gurobi)
AnsweredHi,I want to solve a MILP, which optimizes the operation of an energy system. It is constructed in pyomo and includes some binary variables for electrolyzer, fuel cell, battery operation and simple...