DC OPF Setup
The E4ST.jl DC OPF is set up as a cost minimization problem. Costs are added to the objective function and benefits are subtracted. setupdcopf!() adds VOM, Fuel Cost, FOM, Capex, and Curtialment Cost to the objective function. Other terms can be added to the objective in Modifications before the model is optimized. A dictionary of the terms added to the objective function can be found in data[:objvars].
Constraints and expressions can also be defined outside of setup_dcopf!() before the model is optimized. This will also be done in Modifications.
E4ST.setup_dcopf! — Functionsetup_dcopf!(config, data, model)Set up a DC OPF problem
Get Model Variable Function
These functions get or use model variables. To get the value after optimizing the model they must be wrapped in value.().
E4ST.get_pgen_bus — Functionget_pgen_bus(data, model, bus_idx, year_idx, hour_idx)Returns total power generation for a bus at a time * To use this to retieve the variable values after the model has been optimized, wrap the function with value() like this: value.(getpgenbus).
E4ST.get_pflow_bus — Functionget_pflow_bus(data, model, f_bus_idx, year_idx, hour_idx)Returns net power flow out of the bus
- To use this to retieve the variable values after the model has been optimized, wrap the function with value() like this: value.(getpflowbus).
E4ST.get_pflow_branch — Functionget_pflow_branch(data, model, branch_idx, year_idx, hour_idx)Return total power flow on a branch.
- If branchidxsigned is positive then positive power flow is in the direction fbus -> tbus listed in the branch table. It is measuring the power flow out of f_bus.
- If branchidxsigned is negative then positive power flow is in the opposite direction, tbus -> fbus listed in the branch table. It is measuring the power flow out of t_bus.
- To use this to retieve the variable values after the model has been optimized, wrap the function with value() like this: value.(getpflowbranch).
Constriant/Expression Info Function
These functions are used in defining the model constraints.
Missing docstring for get_pgen_max. Check Documenter's build log for details.
E4ST.get_egen_gen — Functionget_egen_gen(data, model, gen_idx)Returns the total energy generation from a gen summed over all rep time.
get_egen_gen(data, model, gen_idx, year_idx)Returns the total energy generation from a gen summed over rep time for the given year.
get_egen_gen(data, model, gen_idx, year_idx, hour_idx)Returns the total energy generation from a gen for the given year and hour. This is pgengen multiplied by the number of hours spent at that representative hour. See [`gethour_weight`](@ref)
- To use this to retieve the variable values after the model has been optimized, wrap the function with
value()like this:value.(get_egen_gen(args...)).
Model Mutation Functions
These functions are used to modify the model, specifically creating and adding terms to the objective expression. The Term abstract type is used to determine how the term (cost or benefit) should be added to the objective function.
E4ST.Term — Typeabstract type TermAbstract type Term is used to add variables (terms) to the objective function or other functions. Subtypes include PerMWhGen, PerMWCap, and PerMWhCurtailed.
Missing docstring for PerMWhGen. Check Documenter's build log for details.
Missing docstring for PerMWCap. Check Documenter's build log for details.
Missing docstring for PerMWhCurtailed. Check Documenter's build log for details.
Missing docstring for PerMWCapInv. Check Documenter's build log for details.
E4ST.add_obj_term! — Functionadd_obj_term!(data, model, ::Term, s::Symbol; oper)Adds or subtracts cost/revenue s to the objective function of the model based on the operator oper. Adds the cost/revenue to the objective variables list in data.
E4ST.add_obj_exp! — Functionfunction add_obj_exp!(data, model, term::Term, s::Symbol; oper)Adds expression s (already defined in model) to the objective expression model[:obj]. Adds the name, oper, and type of the term to data[:obj_vars].