Methods - EnergyModelsBase

EMB.variables_node(m, 𝒩ⁿᵈʳ::Vector{NonDisRES}, 𝒯, modeltype::EnergyModel)

Create the optimization variable :curtailment for every NonDisRES node. This method is called from EnergyModelsBase.jl.

EMB.variables_node(m, 𝒩::Vector{<:HydroStorage}, 𝒯, modeltype::EnergyModel)

Create the optimization variable :hydro_spill for every HydroStorage node. This variable enables hydro storage nodes to spill water from the reservoir without producing energy. Wihtout this slack variable, parameters with too much inflow would else lead to an infeasible model.

EMB.create_node(m, n::HydroStorage, 𝒯, 𝒫, modeltype::EnergyModel)

Sets all constraints for the regulated hydro storage node.

constraints_capacity(m, n::NonDisRES, 𝒯::TimeStructure, modeltype::EnergyModel)

Function for creating the constraint on the maximum capacity of a NonDisRES. Also sets the constraint defining curtailment.

constraints_flow_in(m, n::HydroStor, 𝒯::TimeStructure, modeltype::EnergyModel)

When n::HydroStor, the variable :flow_in is fixed to 0 for all potential inputs.

constraints_flow_in(m, n::PumpedHydroStor, 𝒯::TimeStructure, modeltype::EnergyModel)

When n::PumpedHydroStor, the variable :flow_in is multiplied with the inputs value to calculate the variable :stor_charge_use.

EMB.constraints_level_aux(m, n::HydroStorage, 𝒯, 𝒫, modeltype)

Function for creating the Δ constraint for the level of a HydroStorage node as well as the specification of the initial level in a strategic period.

The change in storage level in the reservoir at operational periods t is the inflow through :level_inflow plus the input :stor_charge_use minus the production :stor_discharge_use and the spillage of water due to overflow :hydro_spill.

EMB.check_node(n::NonDisRES, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)

This method checks that the NonDisRES node is valid.

Checks

• The field cap is required to be non-negative (similar to the Source check).
• The value of the field fixed_opex is required to be non-negative and accessible through a StrategicPeriod as outlined in the function check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles).
• The values of the dictionary output are required to be non-negative (similar to the Source check).
• The field profile is required to be in the range $[0, 1]$ for all time steps $t ∈ \mathcal{T}$.

EMB.check_node(n::HydroStorage, 𝒯, modeltype::EMB.EnergyModel, check_timeprofiles::Bool)

This method checks that the HydroStorage node is valid.

Checks

• The TimeProfile of the field capacity in the type in the field charge is required to be non-negative if the chosen composite type has the field capacity.
• The TimeProfile of the field capacity in the type in the field level is required to be non-negative`.
• The TimeProfile of the field capacity in the type in the field discharge is required to be non-negative if the chosen composite type has the field capacity.
• The TimeProfile of the field fixed_opex is required to be non-negative and accessible through a StrategicPeriod as outlined in the function check_fixed_opex(n, 𝒯ᴵⁿᵛ, check_timeprofiles) for the chosen composite type .
• The field output can only include a single Resource.
• The value of the field output is required to be smaller or equal to 1.
• The value of the field input is required to be in the range $[0, 1]$.
• The value of the field level_init is required to be in the range $[level\_min, 1] \cdot stor\_cap(t)$ for all time steps $t ∈ \mathcal{T}$.
• The value of the field level_init is required to be in the range $[0, 1]$.
• The value of the field level_min is required to be in the range $[0, 1]$.