Unit-Commitment-Gurobi

Python version of unit commitment solver using gurobi-python api.

1.Problem Definition

This example formulates and solves the following simple UC model:

minimize 
   objective: min f(x)      
subject to
   constraints: AX<=b
with
   variables: x0,x1,...,xn

This is a deterministic model solver and just a baseline. If you want a stochastic programme model solver, try scenario generation method.

In this model, the variables are: on-off status of thermal unit, power output of thermal unit, hydro unit, wind farm, solar station and battery station. The following constraints are included: Power balance constraints, upper and lower outputs constraints, ramp constraints, reservoir volume constraints, on-off minimum time constraints, and reserve capacity constraints. The objectives are: Operation cost of thermal units and punishment for abandoning renewable energy.

2.Model Simplification

There are three simplifications:

• First one is the hydro power output has no relationship with reservoir volume or water-head height, and the upcoming and up-flowing water volumes are the same or linear relationship during the whole 24h. You can also set the reservoir volumes by yourself.
• Second one is that the range of battery station power output is defined as [-Ps,Pu]. But if you consider pumped storage power station rather than battery station, the output range should be {-Ps,[0,Pu]}.
• Third one is the start up cost of thermal unit is not concluded in the objective.

3.Requirement

Ensure you have installed Gurobi before running this code. Find it here.

4.TODO

Add scenario generation method for stochastic programme model.