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Enumerated Types

To specify fields representing an option from a pre-defined list, some of the fields of Component structs are specified with IS.scoped_enums (e.g. set_fuel!(gen, ThermalFuels.COAL)). Below are the enumerated types contained in PowerSystems.

ThermalFuels

Each ThermalGen generator struct contains a field for fuel::ThermalFuels where ThermalFuels are intended to reflect the options denoted by the Aggregated Fuel Codes from the EIA Annual Energy Review. Specifically, ThermalFuels is an enumerated type with the following options:

EnumName EIA Fuel Code Description
COAL COL Anthracite Coal and Bituminous Coal
WASTE_COAL WOC Waste/Other Coal (includes anthracite culm, gob, fine coal, lignite waste, waste coal)
DISTILLATE_FUEL_OIL DFO Distillate Fuel Oil (Diesel, No. 1, No. 2, and No. 4)
WASTE_OIL WOO Waste Oil Kerosene and JetFuel Butane, Propane
PETROLEUM_COKE PC Petroleum Coke
RESIDUAL_FUEL_OIL RFO Residual Fuel Oil (No. 5, No. 6 Fuel Oils, and Bunker Oil)
NATURAL_GAS NG Natural Gas
OTHER_GAS OOG Other Gas and blast furnace gas
NUCLEAR NUC Nuclear Fission (Uranium, Plutonium, Thorium)
AG_BIPRODUCT ORW Agricultural Crop Byproducts/Straw/Energy Crops
MUNICIPAL_WASTE MLG Municipal Solid Waste – Biogenic component
WOOD_WASTE WWW Wood Waste Liquids excluding Black Liquor (BLQ) (Includes red liquor, sludge wood, spent sulfite liquor, and other wood-based liquids)
GEOTHERMAL GEO Geothermal
OTHER OTH Other

PrimeMovers

Each generator struct contains a field for prime_mover::PrimeMovers where PrimeMovers are intended to reflect the options denoted by EIA form 923. Specifically, PrimeMovers is an enumerated type with the following options:

EnumName Description
BA Energy Storage, Battery
BT Turbines Used in a Binary Cycle (including those used for geothermal applications)
CA Combined-Cycle – Steam Part
CC Combined-Cycle - Aggregated Plant *augmentation of EIA
CE Energy Storage, Compressed Air
CP Energy Storage, Concentrated Solar Power
CS Combined-Cycle Single-Shaft Combustion turbine and steam turbine share a single generator
CT Combined-Cycle Combustion Turbine Part
ES Energy Storage, Other
FC Fuel Cell
FW Energy Storage, Flywheel
GT Combustion (Gas) Turbine (including jet engine design)
HA Hydrokinetic, Axial Flow Turbine
HB Hydrokinetic, Wave Buoy
HK Hydrokinetic, Other
HY Hydraulic Turbine (including turbines associated with delivery of water by pipeline)
IC Internal Combustion (diesel, piston, reciprocating) Engine
PS Energy Storage, Reversible Hydraulic Turbine (Pumped Storage)
OT Other
ST Steam Turbine (including nuclear, geothermal and solar steam; does not include combined-cycle turbine)
PV Photovoltaic *renaming from EIA PV to PVe to avoid conflict with ACBusType.PV
WT Wind Turbine, Onshore
WS Wind Turbine, Offshore

ACBusTypes

ACBusTypes is used to denote which quantities are specified for load flow calculations and to otherwise categorize buses for modeling activities.

EnumName Description
ISOLATED Disconnected from network
PQ Active and reactive power defined (load bus)
PV Active power and voltage magnitude defined (generator bus)
REF Reference bus (θ = 0)
SLACK Slack bus

AngleUnits

EnumName
DEGREES
RADIANS

StateTypes

EnumName
Differential
Algebraic
Hybrid