ANL-CEEESA/UnitCommitment.jl
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Add ramping formulaton: PanGua16

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This commit is contained in:
Alinson S. Xavier
2021-06-01 09:40:12 -05:00
parent b4cb4d8252
commit 05441b7492
6 changed files with 119 additions and 1 deletions
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4
CHANGELOG.md
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@@ -11,6 +11,10 @@ All notable changes to this project will be documented in this file.
[semver]: https://semver.org/spec/v2.0.0.html
[pkjjl]: https://pkgdocs.julialang.org/v1/compatibility/#compat-pre-1.0
## [0.3.0] - [Unreleased]
### Added
- Add multiple ramping formulations (ArrCon00, MorLatRam13, DamKucRajAta16, PanGua16)
## [0.2.0] - 2021-05-28
### Added
- Add sub-hourly unit commitment.

3
benchmark/benchmark.jl
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@@ -67,6 +67,9 @@ function main()
"MorLatRam13" => UnitCommitment.Formulation(
ramping = UnitCommitment.MorLatRam13(),
),
"PanGua16" => UnitCommitment.Formulation(
ramping = UnitCommitment.PanGua16(),
),
)
trials = [i for i in 1:5]
combinations = [

4
src/UnitCommitment.jl
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@@ -5,11 +5,12 @@
module UnitCommitment
include("instance/structs.jl")
include("solution/structs.jl")
include("model/formulations/base/structs.jl")
include("model/formulations/ArrCon00/structs.jl")
include("model/formulations/DamKucRajAta16/structs.jl")
include("model/formulations/MorLatRam13/structs.jl")
include("model/formulations/PanGua16/structs.jl")
include("solution/structs.jl")
include("solution/methods/XavQiuWanThi19/structs.jl")
include("import/egret.jl")
@@ -24,6 +25,7 @@ include("model/formulations/base/system.jl")
include("model/formulations/base/unit.jl")
include("model/formulations/DamKucRajAta16/ramp.jl")
include("model/formulations/MorLatRam13/ramp.jl")
include("model/formulations/PanGua16/ramp.jl")
include("model/jumpext.jl")
include("solution/fix.jl")
include("solution/methods/XavQiuWanThi19/enforce.jl")

97
src/model/formulations/PanGua16/ramp.jl Normal file
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@@ -0,0 +1,97 @@
function _add_ramp_eqs!(
model::JuMP.Model,
g::Unit,
formulation::PanGua16,
)::Nothing
# TODO: Move upper case constants to model[:instance]
RESERVES_WHEN_SHUT_DOWN = true
gn = g.name
is_on = model[:is_on]
prod_above = model[:prod_above]
reserve = model[:reserve]
switch_off = model[:switch_off]
switch_on = model[:switch_on]
eq_str_prod_limit = _init(model, :eq_str_prod_limit)
eq_prod_limit_ramp_up_extra_period =
_init(model, :eq_prod_limit_ramp_up_extra_period)
eq_prod_limit_shutdown_trajectory =
_init(model, :eq_prod_limit_shutdown_trajectory)
UT = g.min_uptime
SU = g.startup_limit # startup rate, i.e., max production right after startup
SD = g.shutdown_limit # shutdown rate, i.e., max production right before shutdown
RU = g.ramp_up_limit # ramp up rate
RD = g.ramp_down_limit # ramp down rate
T = model[:instance].time
for t in 1:T
Pbar = g.max_power[t]
if Pbar < 1e-7
# Skip this time period if max power = 0
continue
end
#TRD = floor((Pbar - SU) / RD) # ramp down time
# TODO check amk changed TRD wrt Kneuven et al.
TRD = ceil((Pbar - SD) / RD) # ramp down time
TRU = floor((Pbar - SU) / RU) # ramp up time, can be negative if Pbar < SU
# TODO check initial time periods: what if generator has been running for x periods?
# But maybe ok as long as (35) and (36) are also used...
if UT > 1
# Equation (38) in Kneuven et al. (2020)
# Generalization of (20)
# Necessary that if any of the switch_on = 1 in the sum,
# then switch_off[gn, t+1] = 0
eq_str_prod_limit[gn, t] = @constraint(
model,
prod_above[gn, t] +
g.min_power[t] * is_on[gn, t] +
reserve[gn, t] <=
Pbar * is_on[gn, t] -
(t < T ? (Pbar - SD) * switch_off[gn, t+1] : 0.0) - sum(
(Pbar - (SU + i * RU)) * switch_on[gn, t-i] for
i in 0:min(UT - 2, TRU, t - 1)
)
)
if UT - 2 < TRU
# Equation (40) in Kneuven et al. (2020)
# Covers an additional time period of the ramp-up trajectory, compared to (38)
eq_prod_limit_ramp_up_extra_period[gn, t] = @constraint(
model,
prod_above[gn, t] +
g.min_power[t] * is_on[gn, t] +
reserve[gn, t] <=
Pbar * is_on[gn, t] - sum(
(Pbar - (SU + i * RU)) * switch_on[gn, t-i] for
i in 0:min(UT - 1, TRU, t - 1)
)
)
end
# Add in shutdown trajectory if KSD >= 0 (else this is dominated by (38))
KSD = min(TRD, UT - 1, T - t - 1)
if KSD > 0
KSU = min(TRU, UT - 2 - KSD, t - 1)
# Equation (41) in Kneuven et al. (2020)
eq_prod_limit_shutdown_trajectory[gn, t] = @constraint(
model,
prod_above[gn, t] +
g.min_power[t] * is_on[gn, t] +
(RESERVES_WHEN_SHUT_DOWN ? reserve[gn, t] : 0.0) <=
Pbar * is_on[gn, t] - sum(
(Pbar - (SD + i * RD)) * switch_off[gn, t+1+i] for
i in 0:KSD
) - sum(
(Pbar - (SU + i * RU)) * switch_on[gn, t-i] for
i in 0:KSU
) - (
(KSU >= TRU || KSU > t - 2) ? 0.0 :
max(0, (SU + (KSU + 1) * RU) - (SD + TRD * RD)) *
switch_on[gn, t-(KSU+1)]
)
)
end
end
end
end

11
src/model/formulations/PanGua16/structs.jl Normal file
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@@ -0,0 +1,11 @@
# 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.
"""
Formulation described in:
Pan, K., & Guan, Y. (2016). Strong formulations for multistage stochastic
self-scheduling unit commitment. Operations Research, 64(6), 1482-1498.
"""
struct PanGua16 <: RampingFormulation end

1
test/model/formulations_test.jl
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@@ -14,4 +14,5 @@ end
_test(UnitCommitment.Formulation(ramping = UnitCommitment.ArrCon00()))
_test(UnitCommitment.Formulation(ramping = UnitCommitment.DamKucRajAta16()))
_test(UnitCommitment.Formulation(ramping = UnitCommitment.MorLatRam13()))
_test(UnitCommitment.Formulation(ramping = UnitCommitment.PanGua16()))
end