ANL-CEEESA/UnitCommitment.jl
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stochastic extension w/ scenarios

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oyurdakul
2023-02-08 23:46:10 -06:00
parent 8fc84412eb
commit c95b01dadf
27 changed files with 566 additions and 386 deletions
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31
src/model/formulations/MorLatRam2013/ramp.jl
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@@ -8,6 +8,7 @@ function _add_ramp_eqs!(
formulation_prod_vars::Gar1962.ProdVars,
formulation_ramping::MorLatRam2013.Ramping,
formulation_status_vars::Gar1962.StatusVars,
sc::UnitCommitmentScenario
)::Nothing
# TODO: Move upper case constants to model[:instance]
RESERVES_WHEN_START_UP = true
@@ -22,7 +23,7 @@ function _add_ramp_eqs!(
gn = g.name
eq_ramp_down = _init(model, :eq_ramp_down)
eq_ramp_up = _init(model, :eq_str_ramp_up)
reserve = _total_reserves(model, g)
reserve = _total_reserves(model, g, sc)
# Gar1962.ProdVars
prod_above = model[:prod_above]
@@ -39,10 +40,10 @@ function _add_ramp_eqs!(
# Ramp up limit
if t == 1
if is_initially_on
eq_ramp_up[gn, t] = @constraint(
eq_ramp_up[sc.name, gn, t] = @constraint(
model,
g.min_power[t] +
prod_above[gn, t] +
prod_above[sc.name, gn, t] +
(RESERVES_WHEN_RAMP_UP ? reserve[t] : 0.0) <=
g.initial_power + RU
)
@@ -58,13 +59,13 @@ function _add_ramp_eqs!(
SU = g.startup_limit
max_prod_this_period =
g.min_power[t] * is_on[gn, t] +
prod_above[gn, t] +
prod_above[sc.name, gn, t] +
(
RESERVES_WHEN_START_UP || RESERVES_WHEN_RAMP_UP ?
reserve[t] : 0.0
)
min_prod_last_period =
g.min_power[t-1] * is_on[gn, t-1] + prod_above[gn, t-1]
g.min_power[t-1] * is_on[gn, t-1] + prod_above[sc.name, gn, t-1]
eq_ramp_up[gn, t] = @constraint(
model,
max_prod_this_period - min_prod_last_period <=
@@ -74,11 +75,11 @@ function _add_ramp_eqs!(
# Equation (26) in Kneuven et al. (2020)
# TODO: what if RU < SU? places too stringent upper bound
# prod_above[gn, t] when starting up, and creates diff with (24).
eq_ramp_up[gn, t] = @constraint(
eq_ramp_up[sc.name, gn, t] = @constraint(
model,
prod_above[gn, t] +
prod_above[sc.name, gn, t] +
(RESERVES_WHEN_RAMP_UP ? reserve[t] : 0.0) -
prod_above[gn, t-1] <= RU
prod_above[sc.name, gn, t-1] <= RU
)
end
end
@@ -90,9 +91,9 @@ function _add_ramp_eqs!(
# min_power + RD < initial_power < SD
# then the generator should be able to shut down at time t = 1,
# but the constraint below will force the unit to produce power
eq_ramp_down[gn, t] = @constraint(
eq_ramp_down[sc.name, gn, t] = @constraint(
model,
g.initial_power - (g.min_power[t] + prod_above[gn, t]) <= RD
g.initial_power - (g.min_power[t] + prod_above[sc.name, gn, t]) <= RD
)
end
else
@@ -102,13 +103,13 @@ function _add_ramp_eqs!(
SD = g.shutdown_limit
max_prod_last_period =
g.min_power[t-1] * is_on[gn, t-1] +
prod_above[gn, t-1] +
prod_above[sc.name, gn, t-1] +
(
RESERVES_WHEN_SHUT_DOWN || RESERVES_WHEN_RAMP_DOWN ?
reserve[t-1] : 0.0
)
min_prod_this_period =
g.min_power[t] * is_on[gn, t] + prod_above[gn, t]
g.min_power[t] * is_on[gn, t] + prod_above[sc.name, gn, t]
eq_ramp_down[gn, t] = @constraint(
model,
max_prod_last_period - min_prod_this_period <=
@@ -118,11 +119,11 @@ function _add_ramp_eqs!(
# Equation (27) in Kneuven et al. (2020)
# TODO: Similar to above, what to do if shutting down in time t
# and RD < SD? There is a difference with (25).
eq_ramp_down[gn, t] = @constraint(
eq_ramp_down[sc.name, gn, t] = @constraint(
model,
prod_above[gn, t-1] +
prod_above[sc.name, gn, t-1] +
(RESERVES_WHEN_RAMP_DOWN ? reserve[t-1] : 0.0) -
prod_above[gn, t] <= RD
prod_above[sc.name, gn, t] <= RD
)
end
end