ANL-CEEESA/UnitCommitment.jl
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Make papers into modules, instead of structs; add StartupCostsFormulation

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This commit is contained in:
Alinson S. Xavier
2021-06-01 14:20:36 -05:00
parent ecb13dba7c
commit 8cdd88d6de
23 changed files with 181 additions and 97 deletions
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45
src/model/formulations/base/unit.jl
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@@ -22,7 +22,7 @@ function _add_unit!(model::JuMP.Model, g::Unit, f::Formulation)
_add_production_limit_eqs!(model, g)
_add_production_piecewise_linear_eqs!(model, g, f.pwl_costs)
_add_ramp_eqs!(model, g, f.ramping)
_add_startup_shutdown_costs_eqs!(model, g)
_add_startup_cost_eqs!(model, g, f.startup_costs)
_add_startup_shutdown_limit_eqs!(model, g)
_add_status_eqs!(model, g)
return
@@ -134,49 +134,6 @@ function _add_startup_shutdown_limit_eqs!(model::JuMP.Model, g::Unit)::Nothing
return
end
function _add_startup_shutdown_costs_eqs!(model::JuMP.Model, g::Unit)::Nothing
eq_startup_choose = _init(model, :eq_startup_choose)
eq_startup_restrict = _init(model, :eq_startup_restrict)
S = length(g.startup_categories)
startup = model[:startup]
for t in 1:model[:instance].time
for s in 1:S
# If unit is switching on, we must choose a startup category
eq_startup_choose[g.name, t, s] = @constraint(
model,
model[:switch_on][g.name, t] ==
sum(startup[g.name, t, s] for s in 1:S)
)
# If unit has not switched off in the last `delay` time periods, startup category is forbidden.
# The last startup category is always allowed.
if s < S
range_start = t - g.startup_categories[s+1].delay + 1
range_end = t - g.startup_categories[s].delay
range = (range_start:range_end)
initial_sum = (
g.initial_status < 0 && (g.initial_status + 1 in range) ? 1.0 : 0.0
)
eq_startup_restrict[g.name, t, s] = @constraint(
model,
startup[g.name, t, s] <=
initial_sum + sum(
model[:switch_off][g.name, i] for i in range if i >= 1
)
)
end
# Objective function terms for start-up costs
add_to_expression!(
model[:obj],
startup[g.name, t, s],
g.startup_categories[s].cost,
)
end
end
return
end
function _add_status_vars!(model::JuMP.Model, g::Unit)::Nothing
is_on = _init(model, :is_on)
switch_on = _init(model, :switch_on)