Rename formulation structs

src/UnitCommitment.jl

@@ -10,7 +10,7 @@ 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("solution/methods/XaQiWaTh19/structs.jl")
+include("solution/methods/XavQiuWanThi19/structs.jl")
 
 include("import/egret.jl")
 include("instance/read.jl")
@@ -26,10 +26,10 @@ include("model/formulations/DamKucRajAta16/ramp.jl")
 include("model/formulations/MorLatRam13/ramp.jl")
 include("model/jumpext.jl")
 include("solution/fix.jl")
-include("solution/methods/XaQiWaTh19/enforce.jl")
-include("solution/methods/XaQiWaTh19/filter.jl")
-include("solution/methods/XaQiWaTh19/find.jl")
-include("solution/methods/XaQiWaTh19/optimize.jl")
+include("solution/methods/XavQiuWanThi19/enforce.jl")
+include("solution/methods/XavQiuWanThi19/filter.jl")
+include("solution/methods/XavQiuWanThi19/find.jl")
+include("solution/methods/XavQiuWanThi19/optimize.jl")
 include("solution/optimize.jl")
 include("solution/solution.jl")
 include("solution/warmstart.jl")

src/model/build.jl

@@ -33,8 +33,7 @@ function build_model(;
 )::JuMP.Model
     return _build_model(
         instance,
-        _GeneratorFormulation(),
-        _ShiftFactorsFormulation(),
+        Formulation(),
         optimizer = optimizer,
         variable_names = variable_names,
     )
@@ -42,8 +41,7 @@ end
 
 function _build_model(
     instance::UnitCommitmentInstance,
-    fg::_GeneratorFormulation,
-    ft::_TransmissionFormulation;
+    formulation::Formulation;
     optimizer = nothing,
     variable_names::Bool = false,
 )::JuMP.Model
@@ -55,15 +53,15 @@ function _build_model(
         end
         model[:obj] = AffExpr()
         model[:instance] = instance
-        _setup_transmission(model, ft)
+        _setup_transmission(model, formulation.transmission)
         for l in instance.lines
-            _add_transmission_line!(model, l, ft)
+            _add_transmission_line!(model, l, formulation.transmission)
         end
         for b in instance.buses
             _add_bus!(model, b)
         end
         for g in instance.units
-            _add_unit!(model, g, fg)
+            _add_unit!(model, g, formulation)
         end
         for ps in instance.price_sensitive_loads
             _add_price_sensitive_load!(model, ps)

src/model/formulations/ArrCon00/ramp.jl

@@ -5,7 +5,7 @@
 function _add_ramp_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_ArrCon00,
+    formulation::ArrCon00,
 )::Nothing
     # TODO: Move upper case constants to model[:instance]
     RESERVES_WHEN_START_UP = true

src/model/formulations/ArrCon00/structs.jl

@@ -9,4 +9,4 @@ Formulation described in:
     to an electricity spot market. IEEE Transactions on power systems, 15(3), 
     1098-1104.
 """
-mutable struct _ArrCon00 <: _RampingFormulation end
+struct ArrCon00 <: RampingFormulation end

src/model/formulations/DamKucRajAta16/ramp.jl

@@ -5,7 +5,7 @@
 function _add_ramp_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_DamKucRajAta16,
+    formulation::DamKucRajAta16,
 )::Nothing
     # TODO: Move upper case constants to model[:instance]
     RESERVES_WHEN_START_UP = true
@@ -31,15 +31,15 @@ function _add_ramp_eqs!(
         time_invariant =
             (t > 1) ? (abs(g.min_power[t] - g.min_power[t-1]) < 1e-7) : true
 
-        if t > 1 && !time_invariant
-            warning(
-                "Ramping according to Damcı-Kurt et al. (2016) requires " *
-                "time-invariant minimum power. This does not hold for " *
-                "generator $(gn): min_power[$t] = $(g.min_power[t]); " *
-                "min_power[$(t-1)] = $(g.min_power[t-1]). Reverting to " *
-                "Arroyo and Conejo (2000) formulation for this generator.",
-            )
-        end
+        # if t > 1 && !time_invariant
+        #     @warn(
+        #         "Ramping according to Damcı-Kurt et al. (2016) requires " *
+        #         "time-invariant minimum power. This does not hold for " *
+        #         "generator $(gn): min_power[$t] = $(g.min_power[t]); " *
+        #         "min_power[$(t-1)] = $(g.min_power[t-1]). Reverting to " *
+        #         "Arroyo and Conejo (2000) formulation for this generator.",
+        #     )
+        # end
 
         max_prod_this_period =
             prod_above[gn, t] + (

src/model/formulations/DamKucRajAta16/structs.jl

@@ -8,4 +8,4 @@ Formulation described in:
     Damcı-Kurt, P., Küçükyavuz, S., Rajan, D., & Atamtürk, A. (2016). A polyhedral
     study of production ramping. Mathematical Programming, 158(1), 175-205.
 """
-mutable struct _DamKucRajAta16 <: _RampingFormulation end
+struct DamKucRajAta16 <: RampingFormulation end

src/model/formulations/MorLatRam13/ramp.jl

@@ -5,7 +5,7 @@
 function _add_ramp_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_MorLatRam13,
+    formulation::MorLatRam13,
 )::Nothing
     # TODO: Move upper case constants to model[:instance]
     RESERVES_WHEN_START_UP = true

src/model/formulations/MorLatRam13/structs.jl

@@ -9,4 +9,4 @@ Formulation described in:
     MILP formulation for the thermal unit commitment problem. IEEE Transactions
     on Power Systems, 28(4), 4897-4908.
 """
-mutable struct _MorLatRam13 <: _RampingFormulation end
+struct MorLatRam13 <: RampingFormulation end

src/model/formulations/base/line.jl

@@ -5,7 +5,7 @@
 function _add_transmission_line!(
     model::JuMP.Model,
     lm::TransmissionLine,
-    f::_TransmissionFormulation,
+    f::ShiftFactorsFormulation,
 )::Nothing
     overflow = _init(model, :overflow)
     for t in 1:model[:instance].time
@@ -21,7 +21,7 @@ end
 
 function _setup_transmission(
     model::JuMP.Model,
-    formulation::_TransmissionFormulation,
+    formulation::ShiftFactorsFormulation,
 )::Nothing
     instance = model[:instance]
     isf = formulation.precomputed_isf

src/model/formulations/base/structs.jl

@@ -2,21 +2,23 @@
 # Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
 # Released under the modified BSD license. See COPYING.md for more details.
 
-abstract type _RampingFormulation end
-abstract type _TransmissionFormulation end
+abstract type TransmissionFormulation end
+abstract type RampingFormulation end
 
-struct _GeneratorFormulation
-    ramping::_RampingFormulation
+struct Formulation
+    ramping::RampingFormulation
+    transmission::TransmissionFormulation
 
-    function _GeneratorFormulation(
-        ramping::_RampingFormulation = _MorLatRam13(),
+    function Formulation(;
+        ramping::RampingFormulation = MorLatRam13(),
+        transmission::TransmissionFormulation = ShiftFactorsFormulation(),
     )
-        return new(ramping)
+        return new(ramping, transmission)
     end
 end
 
 """
-    mutable struct _ShiftFactorsFormulation <: _TransmissionFormulation
+    struct ShiftFactorsFormulation <: TransmissionFormulation
         isf_cutoff::Float64
         lodf_cutoff::Float64
         precomputed_isf::Union{Nothing,Matrix{Float64}}
@@ -40,13 +42,13 @@ Arguments
     the cutoff that should be applied to the LODF matrix. Entries with magnitude
     smaller than this value will be set to zero.
 """
-mutable struct _ShiftFactorsFormulation <: _TransmissionFormulation
+struct ShiftFactorsFormulation <: TransmissionFormulation
     isf_cutoff::Float64
     lodf_cutoff::Float64
     precomputed_isf::Union{Nothing,Matrix{Float64}}
     precomputed_lodf::Union{Nothing,Matrix{Float64}}
 
-    function _ShiftFactorsFormulation(;
+    function ShiftFactorsFormulation(;
         isf_cutoff = 0.005,
         lodf_cutoff = 0.001,
         precomputed_isf = nothing,

src/model/formulations/base/unit.jl

@@ -2,7 +2,7 @@
 # Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
 # Released under the modified BSD license. See COPYING.md for more details.
 
-function _add_unit!(model::JuMP.Model, g::Unit, f::_GeneratorFormulation)
+function _add_unit!(model::JuMP.Model, g::Unit, f::Formulation)
     if !all(g.must_run) && any(g.must_run)
         error("Partially must-run units are not currently supported")
     end
@@ -32,7 +32,7 @@ _is_initially_on(g::Unit)::Float64 = (g.initial_status > 0 ? 1.0 : 0.0)
 function _add_production_vars!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     prod_above = _init(model, :prod_above)
     segprod = _init(model, :segprod)
@@ -48,7 +48,7 @@ end
 function _add_production_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     eq_prod_above_def = _init(model, :eq_prod_above_def)
     eq_prod_limit = _init(model, :eq_prod_limit)
@@ -94,7 +94,7 @@ end
 function _add_reserve_vars!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     reserve = _init(model, :reserve)
     for t in 1:model[:instance].time
@@ -110,7 +110,7 @@ end
 function _add_reserve_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     reserve = model[:reserve]
     for t in 1:model[:instance].time
@@ -122,7 +122,7 @@ end
 function _add_startup_shutdown_vars!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     startup = _init(model, :startup)
     for t in 1:model[:instance].time
@@ -136,7 +136,7 @@ end
 function _add_startup_shutdown_limit_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     eq_shutdown_limit = _init(model, :eq_shutdown_limit)
     eq_startup_limit = _init(model, :eq_startup_limit)
@@ -175,7 +175,7 @@ end
 function _add_startup_shutdown_costs_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     eq_startup_choose = _init(model, :eq_startup_choose)
     eq_startup_restrict = _init(model, :eq_startup_restrict)
@@ -222,7 +222,7 @@ end
 function _add_status_vars!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     is_on = _init(model, :is_on)
     switch_on = _init(model, :switch_on)
@@ -244,7 +244,7 @@ end
 function _add_status_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     eq_binary_link = _init(model, :eq_binary_link)
     eq_switch_on_off = _init(model, :eq_switch_on_off)
@@ -280,7 +280,7 @@ end
 function _add_ramp_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::RampingFormulation,
 )::Nothing
     prod_above = model[:prod_above]
     reserve = model[:reserve]
@@ -326,7 +326,7 @@ end
 function _add_min_uptime_downtime_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     is_on = model[:is_on]
     switch_off = model[:switch_off]
@@ -373,7 +373,7 @@ end
 function _add_net_injection_eqs!(
     model::JuMP.Model,
     g::Unit,
-    formulation::_GeneratorFormulation,
+    formulation::Formulation,
 )::Nothing
     expr_net_injection = model[:expr_net_injection]
     for t in 1:model[:instance].time

src/solution/methods/XavQiuWanThi19/optimize.jl

@@ -2,17 +2,7 @@
 # Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
 # Released under the modified BSD license. See COPYING.md for more details.
 
-"""
-    optimize!(model::JuMP.Model, method::_XaQiWaTh19)::Nothing
-
-Solve the given unit commitment model, enforcing transmission and N-1
-security constraints lazily, according to the algorithm described in:
-
-    Xavier, A. S., Qiu, F., Wang, F., & Thimmapuram, P. R. (2019). Transmission
-    constraint filtering in large-scale security-constrained unit commitment. 
-    IEEE Transactions on Power Systems, 34(3), 2457-2460.
-"""
-function optimize!(model::JuMP.Model, method::_XaQiWaTh19)::Nothing
+function optimize!(model::JuMP.Model, method::XavQiuWanThi19)::Nothing
     function set_gap(gap)
         try
             JuMP.set_optimizer_attribute(model, "MIPGap", gap)
@@ -21,7 +11,6 @@ function optimize!(model::JuMP.Model, method::_XaQiWaTh19)::Nothing
             @warn "Could not change MIP gap tolerance"
         end
     end
-    instance = model[:instance]
     initial_time = time()
     large_gap = false
     has_transmission = (length(model[:isf]) > 0)

src/solution/methods/XavQiuWanThi19/structs.jl

@@ -5,7 +5,7 @@
 import DataStructures: PriorityQueue
 
 """
-    struct _XaQiWaTh19 <: SolutionMethod
+    struct XavQiuWanThi19 <: SolutionMethod
         time_limit::Float64
         gap_limit::Float64
         two_phase_gap::Bool
@@ -19,7 +19,8 @@ Lazy constraint solution method described in:
     constraint filtering in large-scale security-constrained unit commitment. 
     IEEE Transactions on Power Systems, 34(3), 2457-2460.
 
-## Fields
+Fields
+------
 
 - `time_limit`:
     the time limit over the entire optimization procedure.
@@ -36,14 +37,14 @@ Lazy constraint solution method described in:
     formulation per time period.
 
 """
-struct _XaQiWaTh19
+struct XavQiuWanThi19
     time_limit::Float64
     gap_limit::Float64
     two_phase_gap::Bool
     max_violations_per_line::Int
     max_violations_per_period::Int
 
-    function _XaQiWaTh19(;
+    function XavQiuWanThi19(;
         time_limit::Float64 = 86400.0,
         gap_limit::Float64 = 1e-3,
         two_phase_gap::Bool = true,

src/solution/optimize.jl

@@ -10,5 +10,5 @@ advanced methods to accelerate the solution process and to enforce transmission
 and N-1 security constraints.
 """
 function optimize!(model::JuMP.Model)::Nothing
-    return UnitCommitment.optimize!(model, _XaQiWaTh19())
+    return UnitCommitment.optimize!(model, XavQiuWanThi19())
 end

src/utils/log.jl

@@ -49,6 +49,9 @@ function handle_message(
     if level >= logger.screen_log_level
         printstyled(time_string, color = color)
         println(message)
+        flush(stdout)
+        flush(stderr)
+        Base.Libc.flush_cstdio()
     end
     if logger.file !== nothing && level >= logger.io_log_level
         write(logger.file, time_string)