Grid topology and equipment

Package: PowerOperationsOpenAPIModels · Depends on: PowerCoreOpenAPIModels

Power system operations models: Branch, StaticInjection, and Service components

Types

Type Description
AGC Automatic generation control (AGC) for the system or a certain Area within the system.
AreaInterchange Flow exchanged between Areas.
BilateralConfirmation Confirmation status a bilateral transaction settled under.
BilateralProduct Traded product of a bilateral transaction.
BilateralTransaction A bilaterally negotiated trade reported into the settlement ledger.
CombinedCycleAssociation Association between a CombinedCycleBlock plant and a CT or CA unit, identifying which HRSG the unit feeds into or receives from.
CombinedCycleBlock Attribute to represent combined cycle generation by block configuration that shares heat recovery conversions.
CombinedCycleConfiguration Shaft and turbine arrangement of a combined cycle plant: a single shaft carrying one combustion and one steam turbine, separate shafts for the two, two or three combustion turbines feeding one steam turbine, or Other for any arrangement outside these.
CombinedCycleFractional Attribute to represent combined cycle generation when each unit represents a specific configuration and aggregate heat rate.
CommitmentModes Why a committable unit is (or would be) committed, orthogonal to its operational state.
DiscreteControlledACBranch Used to represent switches and breakers connecting AC Buses.
EnergyReservoirStorage An energy storage device, modeled as a generic energy reservoir.
ExponentialLoad A voltage-dependent ZIP load, most commonly used for dynamics modeling.
FACTSControlDevice Facts control devices.
FACTSControlDeviceControlMode Operating mode of a FACTS control device.
FixedAdmittance A fixed admittance.
FixedForcedOutage Supplemental attribute recording a component’s forced outage status directly, rather than as a probability.
GenericArcImpedance A generic branch defined by a series impedance on an Arc between two buses.
GeometricDistributionForcedOutage Supplemental attribute describing forced outages whose transitions follow geometric distributions, parameterized by the probability of entering an outage and the mean time to recovery.
GroupReserve A reserve product met by a group of individual reserves.
HybridSystem A hybrid system co-locating a thermal unit, electric load, storage, and/or renewable unit behind a single grid interconnection.
HydroDispatch A hydropower generator without a reservoir, suitable for modeling run-of-river hydropower.
HydroPowerPlant Attribute to represent hydro power plants.
HydroPumpTurbine A hydropower pumped turbine that needs to have two HydroReservoirs attached, suitable for modeling independent pumped hydro with reservoirs.
HydroReservoir A hydropower reservoir feeding, or fed by, the turbines attached to it.
HydroTurbine A hydropower generator that must have a HydroReservoir attached, suitable for modeling independent turbines and reservoirs.
ImpedanceCorrectionData Supplemental attribute carrying one row of an impedance correction table, linked to a transformer.
InterconnectingConverter Interconnecting Power Converter (IPC) for transforming power from an ACBus to a DCBus.
InterruptiblePowerLoad A static power load that can be compensated for temporary or continuous interruptions to its requested demand.
InterruptibleStandardLoad An interruptible, voltage-dependent ZIP load whose demand can be curtailed through demand response programs, subject to an interruption cost.
Line An AC transmission line.
LoadConformity WECC classification of how a load tracks voltage and frequency variation, used in dynamic studies to decide how it is modeled during a disturbance.
MarketStage Market stage a bilateral transaction was reported against.
MonitoredLine An AC transmission line with additional power flow constraints specified by the system operator, more restrictive than the line’s thermal limits.
MotorLoad An induction-motor static load, representing the steady-state power draw of motor-driven demand.
OfflineReserve A non-spinning reserve product from devices not currently synchronized with the system but able to come online quickly after an unexpected contingency.
OnlineReserve A reserve product provided by devices already synchronized with the system.
OperationalStates The running on/off lifecycle of an in-service committable unit, mutually exclusive.
PlannedOutage Supplemental attribute describing outages that are scheduled in advance, naming the time series that carries the schedule.
PlantAssociation Association between a power plant supplemental attribute and a generating unit, identifying the group the unit belongs to within the plant.
PointToPointBid A priced point-to-point spread bid (e.g.
PowerLoad A static power load, most commonly used for operational models such as power flow and operational optimizations.
RenewableDispatch A renewable (e.g., wind or solar) generator whose output can be curtailed to satisfy power system constraints.
RenewableNonDispatch A non-dispatchable (i.e., non-curtailable or must-take) renewable generator.
RenewablePowerPlant Attribute to represent renewable power plants.
ReserveDirection Direction a reserve product is procured in.
ServiceAssociation Links a service to one component that contributes to it.
ShiftablePowerLoad A static power load that can be partially or completed shifted to later time periods.
Source An infinite bus with a constant voltage output.
StandardLoad A voltage-dependent ZIP load, most commonly used for dynamics modeling.
Substation Supplemental attribute representing a substation that groups node buses and switching devices of a full-topology (node-breaker) network model.
SwitchedAdmittance A switched admittance, with discrete steps to adjust the admittance.
SwitchedAdmittanceControlMode Control mode of a switched shunt admittance.
SynchronousCondenser A Synchronous Machine connected to the system to provide inertia or reactive power support.
TModelHVDCLine A High Voltage DC transmission line for modeling DC transmission networks.
ThermalMultiStart A thermal generator, such as a fossil fuel or nuclear generator, that can start-up again from a hot, warm, or cold state.
ThermalPowerPlant Attribute to represent ThermalGen power plants with synchronous generation.
ThermalStandard A thermal generator, such as a fossil fuel and nuclear generator.
ThreeWindingTransformer A three-winding transformer, modeled as an equivalent star: each referenced TransformerCircuit connects a terminal bus to the star (hidden) bus and carries that winding’s series electrical data; availability is circuit-level.
ThreeWindingTransformerShuntLocation Placement of a ThreeWindingTransformer’s magnetizing shunt admittance in the equivalent star model.
TradingHub A market trading hub: a named set of member buses at which hub-settled bids are priced.
TradingHubAssociation Links a trading hub to one associated entity.
TransformerCircuit The data defining one modeled arc of a transformer.
TransformerControlObjective Control objective of a transformer tap changer or phase shifter: a fixed tap position with no automatic adjustment (FIXED), or regulation of voltage magnitude at the controlled bus, reactive power flow, active power flow, asymmetric active power flow, or a DC line.
TransmissionInterface A collection of transmission branches whose combined flow is monitored and constrained as an interface.
TwoTerminalGenericHVDCLine A High Voltage DC line, which must be connected to an ACBus on each end.
TwoTerminalLCCLine A Non-Capacitor Line Commutated Converter (LCC)-HVDC transmission line.
TwoTerminalVSCLine A High Voltage Voltage-Source Converter DC line, which must be connected to an ACBus on each end.
TwoWindingTransformer A two-winding transformer connecting two buses.
TwoWindingTransformerShuntLocation Placement of a TwoWindingTransformer’s magnetizing shunt admittance on the two sides of its single circuit arc.
VSCACControlModes AC-side control mode of a voltage-source-converter (VSC) terminal.
VSCDCControlModes DC-side control mode of a voltage-source-converter (VSC) terminal.
VirtualParticipant A virtual (convergence) market participant.
VoltageUnitBasis Unit basis a voltage setpoint is stored in.

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