Maximilian Sletbakk

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Latest activity by Maximilian Sletbakk

  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Optimal solution seems to ignore constraints

    Never mind! It seems like the entire model is functioning now, if anyone else has this issue the solution seemed to be to use a different time model like I showed above. After that I just fixed a s...

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  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Optimal solution seems to ignore constraints

    Thank you, I understand. I suppose my final question would be: I have checked the lp. file, and my constraint  def battery_test_rule(model,t):       return model.batteryLevel[t] == model.batteryLe...

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  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Optimal solution seems to ignore constraints

    Thank you very much, I implemented the changes you suggested, but it sadly still does not give any values for the batteryLevel model What do you mean by "the line is checked"?  My thoughts were t...

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    • 1 vote

  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Optimal solution seems to ignore constraints

    I want it to make sure the line return model.batteryLevel[t] == model.batteryLevel[t-1]+model.batteryCharge[t-1]-model.batteryDischarge[t-1] is checked for every t in my model, with the exception t...

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    • Maximilian Sletbakk
    • 1 vote

  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Optimal solution seems to ignore constraints

    What do you mean exactly? These are just a part of my model, I have several constraints following this setup and they seem to work?

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    • 1 vote

  • Maximilian Sletbakk created a post,

    Optimal solution seems to ignore constraints

    Ongoing
    1. Community
    2. Modeling

    Hello, this question comes as a kind of follow up to my previous post a couple days ago. I have a functioning model, which returns an optimal solution, however this solution ignores some of the con...

    • Maximilian Sletbakk
    • 3 followers
    • 9 comments
    • 1 vote

  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Trouble with indexing in Gurobi

    Okay, I am suspecting that the errror is due to the fact that the "battery" can both charge and discharge at the same time, so I will try to fix thatThank you very much for your time!

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  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Trouble with indexing in Gurobi

    Thanks! That fixed the keyerror! However my  model.battery_level values do not change, they stay at 1000  which is the upper bound  def battery_level_rule(model,t):                                 ...

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  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Trouble with indexing in Gurobi

    What is the best way to express this in the constraint format? 

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  • Maximilian Sletbakk commented,

    1. Community
    2. Modeling
    3. Trouble with indexing in Gurobi

    # Set representing the time steps, 48 hoursmodel.t = Set(initialize=np.arange(0, 48), ordered=True)# Set representing the time steps until all vehicles must be fully charged, 32 hoursmodel.c = Set(...

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    • Maximilian Sletbakk
    • 1 vote