Datasets:
File size: 2,327 Bytes
43c68a3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | # UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment
# Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
# Released under the modified BSD license. See COPYING.md for more details.
function _add_status_vars!(
model::JuMP.Model,
g::ThermalUnit,
formulation_status_vars::Gar1962.StatusVars,
)::Nothing
is_on = _init(model, :is_on)
switch_on = _init(model, :switch_on)
switch_off = _init(model, :switch_off)
for t in 1:model[:instance].time
if g.must_run[t]
is_on[g.name, t] = 1.0
switch_on[g.name, t] = (t == 1 ? 1.0 - _is_initially_on(g) : 0.0)
switch_off[g.name, t] = 0.0
else
is_on[g.name, t] = @variable(model, binary = true, base_name = "is_on_$(g.name)_$(t)")
switch_on[g.name, t] = @variable(model, binary = true, base_name = "switch_on_$(g.name)_$(t)")
switch_off[g.name, t] = @variable(model, binary = true, base_name = "switch_off_$(g.name)_$(t)")
end
add_to_expression!(model[:obj], is_on[g.name, t], g.min_power_cost[t])
end
return
end
function _add_status_eqs!(
model::JuMP.Model,
g::ThermalUnit,
formulation_status_vars::Gar1962.StatusVars,
)::Nothing
eq_binary_link = _init(model, :eq_binary_link)
eq_switch_on_off = _init(model, :eq_switch_on_off)
is_on = model[:is_on]
switch_off = model[:switch_off]
switch_on = model[:switch_on]
for t in 1:model[:instance].time
if !g.must_run[t]
# Link binary variables
if t == 1
eq_binary_link[g.name, t] = @constraint(
model,
is_on[g.name, t] - _is_initially_on(g) ==
switch_on[g.name, t] - switch_off[g.name, t]
)
else
eq_binary_link[g.name, t] = @constraint(
model,
is_on[g.name, t] - is_on[g.name, t-1] ==
switch_on[g.name, t] - switch_off[g.name, t]
)
end
# Cannot switch on and off at the same time
eq_switch_on_off[g.name, t] = @constraint(
model,
switch_on[g.name, t] + switch_off[g.name, t] <= 1
)
end
end
return
end
|