Source

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

An infinite bus with a constant voltage output.

Commonly used in dynamics simulations to represent a very large machine on a single bus or for the representation of import/exports in operational simulations.

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.
bus	integer	yes	—	ID of the bus that this component is connected to.
active_power	number	—	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	—	MVAr / pu (by power_units)	Initial reactive power set point of the unit. Units: per power_units — NATURAL_UNITS: MVAr, COMPONENT_BASE: pu .
active_power_limits	MinMax	—	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 .
parameter_units	string (ImpedanceUnitBasis)	—	—	Unit basis for this source’s impedance fields (R_th, X_th).
R_th	number	—	ohm / pu (by parameter_units)	Source Thevenin resistance. Units: per parameter_units — NATURAL_UNITS: ohm, COMPONENT_BASE: pu .
X_th	number	—	ohm / pu (by parameter_units)	Source Thevenin reactance. Units: per parameter_units — NATURAL_UNITS: ohm, COMPONENT_BASE: pu .
internal_voltage	number	—	pu	Internal voltage. Units: pu.
internal_angle	number	—	rad	Internal angle. Units: rad.
base_voltage	number	—	kV	The base voltage. Units: kV.
base_power	number	—	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.
operation_cost	ImportExportCost or MarketBidTimeSeriesCost or ImportExportTimeSeriesCost	yes	—	Cost of importing and exporting power at the source. or MarketBidCost
dynamic_injector	integer or null	—	—	ID of the corresponding dynamic injection device, if any.