ExponentialLoad

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

A voltage-dependent ZIP load, most commonly used for dynamics modeling.

An ExponentialLoad models active power as P = P0 * V^α and reactive power as Q = Q0 * V^β, where the exponents α and β select govern the voltage dependency. For an alternative three-part formulation of the ZIP model, see StandardLoad. For a simpler load model with no voltage dependency, see PowerLoad.

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	yes	MW / pu (by power_units)	Active power coefficient, P0. Units: per power_units — NATURAL_UNITS: MW, COMPONENT_BASE: pu .
reactive_power	number	yes	MVAr / pu (by power_units)	Reactive power coefficient, Q0. Units: per power_units — NATURAL_UNITS: MVAr, COMPONENT_BASE: pu .
alpha	number	yes	—	Exponent relating voltage dependency for active power. 0 = constant power only, 1 = constant current only, and 2 = constant impedance only.
beta	number	yes	—	Exponent relating voltage dependency for reactive power. 0 = constant power only, 1 = constant current only, and 2 = constant impedance only.
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.
max_active_power	number	yes	MW / pu (by power_units)	Maximum active power that this load can demand. Units: per power_units — NATURAL_UNITS: MW, COMPONENT_BASE: pu .
max_reactive_power	number	yes	MVAr / pu (by power_units)	Maximum reactive power that this load can demand. Units: per power_units — NATURAL_UNITS: MVAr, COMPONENT_BASE: pu .
conformity	string (LoadConformity)	—	—	Indicates whether the specified load is conforming or non-conforming.
dynamic_injector	integer or null	—	—	ID of the corresponding dynamic injection device, if any.