Merge pull request #391 from NREL/fix-ghp-storage-dispatch

Fix ghp-to-storage dispatch

CHANGELOG.md

@@ -23,6 +23,12 @@ Classify the change according to the following categories:
     ### Deprecated
     ### Removed
 
+## Develop 2024-05-09
+### Changed
+- Updated the GHP testset .json `./test/scenarios/ghp_inputs.json` to include a nominal HotThermalStorage and ColdThermalStorage system.
+### Fixed
+- Fixed a bug in which the model fails to build when both GHP and either Hot or Cold Thermal Storage are present.
+
 ## v. 0.46.0
 ### Added 
 - In `src/core/absorption_chiller.jl` struct, added field **heating_load_input** to the AbsorptionChiller struct

src/constraints/storage_constraints.jl

@@ -146,7 +146,7 @@ function add_hot_thermal_storage_dispatch_constraints(m, p, b; _n="")
 	if !isempty(p.techs.chp)
 		if !isempty(p.techs.steam_turbine) && p.s.chp.can_supply_steam_turbine
             @constraint(m, CHPTechProductionFlowCon[b in p.s.storage.types.hot, t in p.techs.chp, q in p.heating_loads, ts in p.time_steps],
-                    m[Symbol("dvHeatToStorage"*_n)][b,tq,ts] + m[Symbol("dvProductionToWaste"*_n)][t,q,ts] + m[Symbol("dvThermalToSteamTurbine"*_n)][t,q,ts] <=
+                    m[Symbol("dvHeatToStorage"*_n)][b,t,q,ts] + m[Symbol("dvProductionToWaste"*_n)][t,q,ts] + m[Symbol("dvThermalToSteamTurbine"*_n)][t,q,ts] <=
                     m[Symbol("dvHeatingProduction"*_n)][t,q,ts]
                     )
         else
@@ -181,6 +181,13 @@ function add_hot_thermal_storage_dispatch_constraints(m, p, b; _n="")
         sum(m[Symbol("dvHeatFromStorage"*_n)][b,q,ts] for q in p.heating_loads)
     )
 
+    #Do not allow GHP to charge storage
+    if !isempty(p.techs.ghp)
+        for b in p.s.storage.types.hot, t in p.techs.ghp, q in p.heating_loads, ts in p.time_steps
+            fix(m[Symbol("dvHeatToStorage"*_n)][b,t,q,ts], 0.0, force=true)
+        end
+    end
+
 end
 
 function add_cold_thermal_storage_dispatch_constraints(m, p, b; _n="")
@@ -207,6 +214,13 @@ function add_cold_thermal_storage_dispatch_constraints(m, p, b; _n="")
         m[Symbol("dvStoragePower"*_n)][b] >= m[Symbol("dvDischargeFromStorage"*_n)][b,ts] + 
         sum(m[Symbol("dvProductionToStorage"*_n)][b,t,ts] for t in p.techs.cooling)
     )
+
+    #Do not allow GHP to charge storage
+    if !isempty(p.techs.ghp)
+        for b in p.s.storage.types.cold, t in p.techs.ghp, ts in p.time_steps
+                    fix(m[Symbol("dvProductionToStorage"*_n)][b,t,ts], 0.0, force=true)
+        end
+    end
 end
 
 function add_storage_sum_constraints(m, p; _n="")

src/core/reopt.jl

@@ -216,19 +216,19 @@ function build_reopt!(m::JuMP.AbstractModel, p::REoptInputs)
 			elseif b in p.s.storage.types.hot
 				@constraint(m, [q in q in setdiff(p.heating_loads, p.heating_loads_served_by_tes[b]), ts in p.time_steps], m[:dvHeatFromStorage][b,q,ts] == 0)
 				if "DomesticHotWater" in p.heating_loads_served_by_tes[b]
-					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_dhw), ts in p.time_steps], m[:dvHeatToStorage][b,"DomesticHotWater",ts] == 0)
+					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_dhw), ts in p.time_steps], m[:dvHeatToStorage][b,t,"DomesticHotWater",ts] == 0)
 				else
-					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,"DomesticHotWater",ts] == 0)
+					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,t,"DomesticHotWater",ts] == 0)
 				end
 				if "SpaceHeating" in p.heating_loads_served_by_tes[b]
-					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_space_heating), ts in p.time_steps], m[:dvHeatToStorage][b,"SpaceHeating",ts] == 0)
+					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_space_heating), ts in p.time_steps], m[:dvHeatToStorage][b,t,"SpaceHeating",ts] == 0)
 				else
-					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,"SpaceHeating",ts] == 0)
+					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,t,"SpaceHeating",ts] == 0)
 				end
 				if "ProcessHeat" in p.heating_loads_served_by_tes[b]
-					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_process_heat), ts in p.time_steps], m[:dvHeatToStorage][b,"ProcessHeat",ts] == 0)
+					@constraint(m, [t in setdiff(p.heating_techs, p.techs_can_serve_process_heat), ts in p.time_steps], m[:dvHeatToStorage][b,t,"ProcessHeat",ts] == 0)
 				else
-					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,"ProcessHeat",ts] == 0)
+					@constraint(m, [t in p.heating_techs, ts in p.time_steps], m[:dvHeatToStorage][b,t,"ProcessHeat",ts] == 0)
 				end
 			end
 		else
@@ -584,7 +584,7 @@ function add_variables!(m::JuMP.AbstractModel, p::REoptInputs)
 		dvGridPurchase[p.time_steps, 1:p.s.electric_tariff.n_energy_tiers] >= 0  # Power from grid dispatched to meet electrical load [kW]
 		dvRatedProduction[p.techs.all, p.time_steps] >= 0  # Rated production of technology t [kW]
 		dvCurtail[p.techs.all, p.time_steps] >= 0  # [kW]
-		dvProductionToStorage[p.s.storage.types.all, p.techs.all, p.time_steps] >= 0  # Power from technology t used to charge storage system b [kW]
+		dvProductionToStorage[p.s.storage.types.all, union(p.techs.ghp,p.techs.all), p.time_steps] >= 0  # Power from technology t used to charge storage system b [kW]
 		dvDischargeFromStorage[p.s.storage.types.all, p.time_steps] >= 0 # Power discharged from storage system b [kW]
 		dvGridToStorage[p.s.storage.types.elec, p.time_steps] >= 0 # Electrical power delivered to storage by the grid [kW]
 		dvStoredEnergy[p.s.storage.types.all, 0:p.time_steps[end]] >= 0  # State of charge of storage system b

src/core/steam_turbine.jl

@@ -25,6 +25,9 @@
     can_wholesale::Bool = false
     can_export_beyond_nem_limit::Bool = false
     can_curtail::Bool = false
+    can_serve_dhw::Bool = true
+    can_serve_space_heating::Bool = true
+    can_serve_process_heat::Bool = true
 
     macrs_option_years::Int = 0
     macrs_bonus_fraction::Float64 = 0.0    

test/scenarios/ghp_inputs.json

@@ -55,5 +55,15 @@
     "ElectricStorage": {
         "max_kw": 0.0,
         "max_kwh": 0.0
+    },
+    "ColdThermalStorage": {
+        "min_gal": 10,
+        "max_gal": 10,
+        "thermal_decay_rate_fraction": 0.0
+    },
+    "HotThermalStorage": {
+        "min_gal": 10,
+        "max_gal": 10,
+        "thermal_decay_rate_fraction": 0.0
     }
 }