Break down model.jl

src/transform/slice.jl

@@ -0,0 +1,52 @@
+# 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.
+
+"""
+    slice(instance, range)
+
+Creates a new instance, with only a subset of the time periods.
+This function does not modify the provided instance. The initial
+conditions are also not modified.
+
+Example
+-------
+
+    # Build a 2-hour UC instance
+    instance = UnitCommitment.read_benchmark("test/case14")
+    modified = UnitCommitment.slice(instance, 1:2)
+
+"""
+function slice(
+    instance::UnitCommitmentInstance,
+    range::UnitRange{Int},
+)::UnitCommitmentInstance
+    modified = deepcopy(instance)
+    modified.time = length(range)
+    modified.power_balance_penalty = modified.power_balance_penalty[range]
+    modified.reserves.spinning = modified.reserves.spinning[range]
+    for u in modified.units
+        u.max_power = u.max_power[range]
+        u.min_power = u.min_power[range]
+        u.must_run = u.must_run[range]
+        u.min_power_cost = u.min_power_cost[range]
+        u.provides_spinning_reserves = u.provides_spinning_reserves[range]
+        for s in u.cost_segments
+            s.mw = s.mw[range]
+            s.cost = s.cost[range]
+        end
+    end
+    for b in modified.buses
+        b.load = b.load[range]
+    end
+    for l in modified.lines
+        l.normal_flow_limit = l.normal_flow_limit[range]
+        l.emergency_flow_limit = l.emergency_flow_limit[range]
+        l.flow_limit_penalty = l.flow_limit_penalty[range]
+    end
+    for ps in modified.price_sensitive_loads
+        ps.demand = ps.demand[range]
+        ps.revenue = ps.revenue[range]
+    end
+    return modified
+end