
Panagiotis Vasilopoulos
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Latest activity by Panagiotis Vasilopoulos-
Panagiotis Vasilopoulos created a post,
Cannot retrieve dual variables even after fixing all binary variables and resolving
Awaiting user inputI have a minimization problem with a quadratic (A[g]*p[g,t]^2 + B[g]*p[g,t]) objective function. One of the constraints is the power balance (energy market) and I want to access the dual variables ...
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Panagiotis Vasilopoulos commented,
Hello, as I'm writing the above after my initial model , (model=ConcreteModel(name=".......")), has been solved/optimized i get the below message: 'ConcreteModel' object has no attribute 'fixed'...