ThermalMultiStart

Package: PowerOperationsOpenAPIModels · Source: Operations/StaticInjection/ThermalMultiStart.json

A thermal generator, such as a fossil fuel or nuclear generator, that can start-up again from a hot, warm, or cold state.

ThermalMultiStart has a detailed representation of the start-up process based on the time elapsed since the last shut down, as well as a detailed shut-down process. The model is based on “Tight and Compact MILP Formulation for the Thermal Unit Commitment Problem.”. For a simplified representation of the start-up and shut-down processes, see ThermalStandard.

Properties

Property	Type	Required	Unit	Description
id	integer	yes	—	Unique integer identifier for this component.
name	string	yes	—	Name of the component. Components of the same type (e.g., PowerLoad) must have unique names, but components of different types (e.g., PowerLoad and ACBus) can have the same name.
available	boolean	yes	—	Indicator of whether the component is connected and online (true) or disconnected, offline, or down (false). Unavailable components are excluded during simulations.
status	string (OperationalStates)	yes	—	Operating state of the unit at the start of a simulation.
commitment_mode	string (CommitmentModes)	—	—	Commitment mode of the unit.
bus	integer	yes	—	ID of the bus that this component is connected to.
active_power	number	yes	MW / pu (by power_units)	Initial active power set point of the unit. For power flow, this is the steady state operating point of the system. For production cost modeling, this may or may not be used as the initial starting point for the solver, depending on the solver used. Units: per power_units — NATURAL_UNITS: MW, COMPONENT_BASE: pu .
reactive_power	number	yes	MVAr / pu (by power_units)	Initial reactive power set point of the unit. Units: per power_units — NATURAL_UNITS: MVAr, COMPONENT_BASE: pu .
rating	number	yes	MVA / pu (by power_units)	Maximum AC side output power rating of the unit. Not to be confused with base_power. Units: per power_units — NATURAL_UNITS: MVA, COMPONENT_BASE: pu .
prime_mover_type	string (PrimeMovers)	yes	—	Prime mover technology according to EIA 923.
fuel	string (ThermalFuels)	yes	—	Prime mover fuel according to EIA 923.
active_power_limits	MinMax	yes	MW / pu (by power_units)	Minimum and maximum stable active power levels. Units: per power_units — NATURAL_UNITS: MW, COMPONENT_BASE: pu .
reactive_power_limits	MinMax	—	MVAr / pu (by power_units)	Minimum and maximum reactive power limits. Set to null if not applicable. Units: per power_units — NATURAL_UNITS: MVAr, COMPONENT_BASE: pu .
ramp_limits	UpDown	—	MW/min / pu/min (by power_units)	Ramp up and ramp down limits. Units: per power_units — NATURAL_UNITS: MW/min, COMPONENT_BASE: pu/min .
power_trajectory	StartUpShutDown	—	MW / pu (by power_units)	Power trajectory the unit will take during the start-up and shut-down ramp process. Units: per power_units — NATURAL_UNITS: MW, COMPONENT_BASE: pu .
time_limits	UpDown	—	min	Minimum up and minimum down time limits. Units: min.
start_time_limits	StartUpStages	—	min	Time limits for start-up based on turbine temperature. Units: min.
start_types	integer	yes	—	Number of start-up based on turbine temperature, where 1 = hot, 2 = warm, and 3 = cold.
operation_cost	ThermalGenerationCost or MarketBidCost or MarketBidTimeSeriesCost or ImportExportTimeSeriesCost	yes	—	Operating cost of generation. or MarketBidCost
base_power	number	yes	MVA	Base power of the unit for per unitization. Units: MVA.
power_units	string (UnitSystem)	yes	—	Unit basis for this component’s power-family fields (active/reactive/apparent power, ratings, limits, ramp rates). COMPONENT_BASE: per unit on this component’s own base_power. NATURAL_UNITS: the field’s physical unit.
time_at_status	number	—	min	Time the generator has been in its current status. Units: min.
dynamic_injector	integer or null	—	—	ID of the corresponding dynamic injection device, if any.