A rotating machine which may be used as a generator or motor.
nan
nan
An AC electrical connection point to a piece of conducting equipment. Terminals are connected at physical connection points called connectivity nodes.
No Additional ItemsAn AC electrical connection point to a piece of conducting equipment. Terminals are connected at physical connection points called connectivity nodes.
The connected status is related to a bus-branch model and the topological node to terminal relation. True implies the terminal is connected to the related topological node and false implies it is not.
In a bus-branch model, the connected status is used to tell if equipment is disconnected without having to change the connectivity described by the topological node to terminal relation. A valid case is that conducting equipment can be connected in one end and open in the other. In particular for an AC line segment, where the reactive line charging can be significant, this is a relevant case.
Represents the normal network phasing condition. If the attribute is missing, three phases (ABC) shall be assumed, except for terminals of grounding classes (specializations of EarthFaultCompensator, GroundDisconnector, and Ground) which will be assumed to be N. Therefore, phase code ABCN is explicitly declared when needed, e.g. for star point grounding equipment.
The phase code on terminals connecting same ConnectivityNode or same TopologicalNode as well as for equipment between two terminals shall be consistent.
The orientation of the terminal connections for a multiple terminal conducting equipment. The sequence numbering starts with 1 and additional terminals should follow in increasing order. The first terminal is the "starting point" for a two terminal branch.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
A single or set of synchronous machines for converting mechanical power into alternating-current power. For example, individual machines within a set may be defined for scheduling purposes while a single control signal is derived for the set. In this case there would be a GeneratingUnit for each member of the set and an additional GeneratingUnit corresponding to the set.
A generating unit whose prime mover is a hydraulic turbine (e.g., Francis, Pelton, Kaplan).
The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.
The aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
Multiplier for value2.
The time between each pair of subsequent regular time points in sequence order.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Time, in seconds
The time for the first time point. The value can be a time of day, not a specific date.
Multiplier for value1.
Same definition as BasicIntervalSchedule.value2MultiplierThe description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The time for the last time point. The value can be a time of day, not a specific date.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Relationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
No Additional ItemsRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
Flag is set to true when output is expressed in net active power.
The style or shape of the curve.
Multiplier for X-axis.
Same definition as BasicIntervalSchedule.value2MultiplierMultiplier for Y1-axis.
Same definition as BasicIntervalSchedule.value2MultiplierMultiplier for Y2-axis.
Same definition as BasicIntervalSchedule.value2MultiplierMultiplier for Y3-axis.
Same definition as BasicIntervalSchedule.value2MultiplierThe description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Governor motor position limit.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Governor Speed Changer Droop. This is the change in generator power output divided by the change in frequency normalized by the nominal power of the generator and the nominal frequency and expressed in percent and negated. A positive value of speed change droop provides additional generator output upon a drop in frequency.
nan
Same definition as BasicIntervalSchedule.value2MultiplierNormally 0 to 100 on a defined base.
Type of turbine.
The height water drops from the reservoir mid-point to the turbine.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
High limit for secondary (AGC) control.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Default initial active power which is used to store a powerflow result for the initial active power for this unit in this network configuration.
Same definition as GeneratingUnit.highControlLimitGenerating unit long term economic participation factor.
Low limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitThe normal maximum rate the generating unit active power output can be lowered by control actions.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Maximum high economic active power limit, that should not exceed the maximum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMaximum allowable spinning reserve. Spinning reserve will never be considered greater than this value regardless of the current operating point.
Same definition as GeneratingUnit.highControlLimitThis is the maximum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitLow economic active power limit that shall be greater than or equal to the minimum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMinimum time interval between unit shutdown and startup.
Same definition as RegularIntervalSchedule.timeStepThis is the minimum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitDetail level of the generator model data.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
The nominal power of the generating unit. Used to give precise meaning to percentage based attributes such as the governor speed change droop (governorSCD attribute).
The attribute shall be a positive value equal to or less than RotatingMachine.ratedS.
Generating unit economic participation factor. The sum of the participation factors across generating units does not have to sum to one. It is used for representing distributed slack participation factor. The attribute shall be a positive value or zero.
Defined as: 1 / ( 1 - Incremental Transmission Loss); with the Incremental Transmission Loss expressed as a plus or minus value. The typical range of penalty factors is (0.9 to 1.1).
The normal maximum rate the generating unit active power output can be raised by control actions.
Same definition as GeneratingUnit.lowerRampRateThe unit's gross rated maximum capacity (book value).
The attribute shall be a positive value.
The gross rated minimum generation level which the unit can safely operate at while delivering power to the transmission grid.
The attribute shall be a positive value.
The net rated maximum capacity determined by subtracting the auxiliary power used to operate the internal plant machinery from the rated gross maximum capacity.
The attribute shall be a positive value.
Generating unit short term economic participation factor.
The initial startup cost incurred for each start of the GeneratingUnit.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
nan
Time it takes to get the unit on-line, from the time that the prime mover mechanical power is applied.
Same definition as RegularIntervalSchedule.timeStepGenerating unit economic participation factor.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The variable cost component of production per unit of ActivePower.
Same definition as GeneratingUnit.startupCostEnergy conversion capability for generating.
The equivalent cost of water that drives the hydro turbine.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
The aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
The efficiency of the unit in converting the fuel into electrical energy.
Same definition as GeneratingUnit.governorSCDSpecifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The planned unused capacity (spinning reserve) which can be used to support emergency load.
Same definition as GeneratingUnit.highControlLimitThe planned unused capacity which can be used to support automatic control overruns.
Same definition as GeneratingUnit.highControlLimitFor dispatchable units, this value represents the economic active power basepoint, for units that are not dispatchable, this value represents the fixed generation value. The value shall be between the operating low and high limits.
Same definition as GeneratingUnit.highControlLimitUnit control error deadband. When a unit's desired active power change is less than this deadband, then no control pulses will be sent to the unit.
Same definition as GeneratingUnit.highControlLimitPulse high limit which is the largest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepPulse low limit which is the smallest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepUnit response rate which specifies the active power change for a control pulse of one second in the most responsive loading level of the unit.
Same definition as GeneratingUnit.lowerRampRateThe efficiency of the unit in converting mechanical energy, from the prime mover, into electrical energy.
Same definition as GeneratingUnit.governorSCDThe aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
The unit control mode.
The source of controls for a generating unit. Defines the control status of the generating unit.
A solar thermal generating unit, connected to the grid by means of a rotating machine. This class does not represent photovoltaic (PV) generation.
The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.
Same definition as GeneratingUnit.GenUnitOpScheduleRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
No Additional ItemsRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
Same definition as GenUnitOpCostCurveGovernor Speed Changer Droop. This is the change in generator power output divided by the change in frequency normalized by the nominal power of the generator and the nominal frequency and expressed in percent and negated. A positive value of speed change droop provides additional generator output upon a drop in frequency.
Same definition as GeneratingUnit.governorSCDHigh limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitDefault initial active power which is used to store a powerflow result for the initial active power for this unit in this network configuration.
Same definition as GeneratingUnit.highControlLimitGenerating unit long term economic participation factor.
Low limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitThe normal maximum rate the generating unit active power output can be lowered by control actions.
Same definition as GeneratingUnit.lowerRampRateMaximum high economic active power limit, that should not exceed the maximum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMaximum allowable spinning reserve. Spinning reserve will never be considered greater than this value regardless of the current operating point.
Same definition as GeneratingUnit.highControlLimitThis is the maximum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitLow economic active power limit that shall be greater than or equal to the minimum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMinimum time interval between unit shutdown and startup.
Same definition as RegularIntervalSchedule.timeStepThis is the minimum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitDetail level of the generator model data.
Same definition as GeneratingUnit.modelDetailThe nominal power of the generating unit. Used to give precise meaning to percentage based attributes such as the governor speed change droop (governorSCD attribute).
The attribute shall be a positive value equal to or less than RotatingMachine.ratedS.
Generating unit economic participation factor. The sum of the participation factors across generating units does not have to sum to one. It is used for representing distributed slack participation factor. The attribute shall be a positive value or zero.
Defined as: 1 / ( 1 - Incremental Transmission Loss); with the Incremental Transmission Loss expressed as a plus or minus value. The typical range of penalty factors is (0.9 to 1.1).
The normal maximum rate the generating unit active power output can be raised by control actions.
Same definition as GeneratingUnit.lowerRampRateThe unit's gross rated maximum capacity (book value).
The attribute shall be a positive value.
The gross rated minimum generation level which the unit can safely operate at while delivering power to the transmission grid.
The attribute shall be a positive value.
The net rated maximum capacity determined by subtracting the auxiliary power used to operate the internal plant machinery from the rated gross maximum capacity.
The attribute shall be a positive value.
Generating unit short term economic participation factor.
The initial startup cost incurred for each start of the GeneratingUnit.
Same definition as GeneratingUnit.startupCostTime it takes to get the unit on-line, from the time that the prime mover mechanical power is applied.
Same definition as RegularIntervalSchedule.timeStepGenerating unit economic participation factor.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The variable cost component of production per unit of ActivePower.
Same definition as GeneratingUnit.startupCostThe aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
The efficiency of the unit in converting the fuel into electrical energy.
Same definition as GeneratingUnit.governorSCDSpecifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The planned unused capacity (spinning reserve) which can be used to support emergency load.
Same definition as GeneratingUnit.highControlLimitThe planned unused capacity which can be used to support automatic control overruns.
Same definition as GeneratingUnit.highControlLimitFor dispatchable units, this value represents the economic active power basepoint, for units that are not dispatchable, this value represents the fixed generation value. The value shall be between the operating low and high limits.
Same definition as GeneratingUnit.highControlLimitUnit control error deadband. When a unit's desired active power change is less than this deadband, then no control pulses will be sent to the unit.
Same definition as GeneratingUnit.highControlLimitPulse high limit which is the largest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepPulse low limit which is the smallest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepUnit response rate which specifies the active power change for a control pulse of one second in the most responsive loading level of the unit.
Same definition as GeneratingUnit.lowerRampRateThe efficiency of the unit in converting mechanical energy, from the prime mover, into electrical energy.
Same definition as GeneratingUnit.governorSCDThe aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
The source of controls for a generating unit. Defines the control status of the generating unit.
Same definition as GeneratingUnit.genControlSourceA nuclear generating unit.
The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.
Same definition as GeneratingUnit.GenUnitOpScheduleRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
No Additional ItemsRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
Same definition as GenUnitOpCostCurveGovernor Speed Changer Droop. This is the change in generator power output divided by the change in frequency normalized by the nominal power of the generator and the nominal frequency and expressed in percent and negated. A positive value of speed change droop provides additional generator output upon a drop in frequency.
Same definition as GeneratingUnit.governorSCDHigh limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitDefault initial active power which is used to store a powerflow result for the initial active power for this unit in this network configuration.
Same definition as GeneratingUnit.highControlLimitGenerating unit long term economic participation factor.
Low limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitThe normal maximum rate the generating unit active power output can be lowered by control actions.
Same definition as GeneratingUnit.lowerRampRateMaximum high economic active power limit, that should not exceed the maximum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMaximum allowable spinning reserve. Spinning reserve will never be considered greater than this value regardless of the current operating point.
Same definition as GeneratingUnit.highControlLimitThis is the maximum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitLow economic active power limit that shall be greater than or equal to the minimum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMinimum time interval between unit shutdown and startup.
Same definition as RegularIntervalSchedule.timeStepThis is the minimum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitDetail level of the generator model data.
Same definition as GeneratingUnit.modelDetailThe nominal power of the generating unit. Used to give precise meaning to percentage based attributes such as the governor speed change droop (governorSCD attribute).
The attribute shall be a positive value equal to or less than RotatingMachine.ratedS.
Generating unit economic participation factor. The sum of the participation factors across generating units does not have to sum to one. It is used for representing distributed slack participation factor. The attribute shall be a positive value or zero.
Defined as: 1 / ( 1 - Incremental Transmission Loss); with the Incremental Transmission Loss expressed as a plus or minus value. The typical range of penalty factors is (0.9 to 1.1).
The normal maximum rate the generating unit active power output can be raised by control actions.
Same definition as GeneratingUnit.lowerRampRateThe unit's gross rated maximum capacity (book value).
The attribute shall be a positive value.
The gross rated minimum generation level which the unit can safely operate at while delivering power to the transmission grid.
The attribute shall be a positive value.
The net rated maximum capacity determined by subtracting the auxiliary power used to operate the internal plant machinery from the rated gross maximum capacity.
The attribute shall be a positive value.
Generating unit short term economic participation factor.
The initial startup cost incurred for each start of the GeneratingUnit.
Same definition as GeneratingUnit.startupCostTime it takes to get the unit on-line, from the time that the prime mover mechanical power is applied.
Same definition as RegularIntervalSchedule.timeStepGenerating unit economic participation factor.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The variable cost component of production per unit of ActivePower.
Same definition as GeneratingUnit.startupCostThe aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
The efficiency of the unit in converting the fuel into electrical energy.
Same definition as GeneratingUnit.governorSCDSpecifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The planned unused capacity (spinning reserve) which can be used to support emergency load.
Same definition as GeneratingUnit.highControlLimitThe planned unused capacity which can be used to support automatic control overruns.
Same definition as GeneratingUnit.highControlLimitFor dispatchable units, this value represents the economic active power basepoint, for units that are not dispatchable, this value represents the fixed generation value. The value shall be between the operating low and high limits.
Same definition as GeneratingUnit.highControlLimitUnit control error deadband. When a unit's desired active power change is less than this deadband, then no control pulses will be sent to the unit.
Same definition as GeneratingUnit.highControlLimitPulse high limit which is the largest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepPulse low limit which is the smallest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepUnit response rate which specifies the active power change for a control pulse of one second in the most responsive loading level of the unit.
Same definition as GeneratingUnit.lowerRampRateThe efficiency of the unit in converting mechanical energy, from the prime mover, into electrical energy.
Same definition as GeneratingUnit.governorSCDThe aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
The source of controls for a generating unit. Defines the control status of the generating unit.
Same definition as GeneratingUnit.genControlSourceA wind driven generating unit, connected to the grid by means of a rotating machine. May be used to represent a single turbine or an aggregation.
The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.
Same definition as GeneratingUnit.GenUnitOpScheduleRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
No Additional ItemsRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
Same definition as GenUnitOpCostCurveGovernor Speed Changer Droop. This is the change in generator power output divided by the change in frequency normalized by the nominal power of the generator and the nominal frequency and expressed in percent and negated. A positive value of speed change droop provides additional generator output upon a drop in frequency.
Same definition as GeneratingUnit.governorSCDHigh limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitDefault initial active power which is used to store a powerflow result for the initial active power for this unit in this network configuration.
Same definition as GeneratingUnit.highControlLimitGenerating unit long term economic participation factor.
Low limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitThe normal maximum rate the generating unit active power output can be lowered by control actions.
Same definition as GeneratingUnit.lowerRampRateMaximum high economic active power limit, that should not exceed the maximum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMaximum allowable spinning reserve. Spinning reserve will never be considered greater than this value regardless of the current operating point.
Same definition as GeneratingUnit.highControlLimitThis is the maximum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitLow economic active power limit that shall be greater than or equal to the minimum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMinimum time interval between unit shutdown and startup.
Same definition as RegularIntervalSchedule.timeStepThis is the minimum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitDetail level of the generator model data.
Same definition as GeneratingUnit.modelDetailThe nominal power of the generating unit. Used to give precise meaning to percentage based attributes such as the governor speed change droop (governorSCD attribute).
The attribute shall be a positive value equal to or less than RotatingMachine.ratedS.
Generating unit economic participation factor. The sum of the participation factors across generating units does not have to sum to one. It is used for representing distributed slack participation factor. The attribute shall be a positive value or zero.
Defined as: 1 / ( 1 - Incremental Transmission Loss); with the Incremental Transmission Loss expressed as a plus or minus value. The typical range of penalty factors is (0.9 to 1.1).
The normal maximum rate the generating unit active power output can be raised by control actions.
Same definition as GeneratingUnit.lowerRampRateThe unit's gross rated maximum capacity (book value).
The attribute shall be a positive value.
The gross rated minimum generation level which the unit can safely operate at while delivering power to the transmission grid.
The attribute shall be a positive value.
The net rated maximum capacity determined by subtracting the auxiliary power used to operate the internal plant machinery from the rated gross maximum capacity.
The attribute shall be a positive value.
Generating unit short term economic participation factor.
The initial startup cost incurred for each start of the GeneratingUnit.
Same definition as GeneratingUnit.startupCostTime it takes to get the unit on-line, from the time that the prime mover mechanical power is applied.
Same definition as RegularIntervalSchedule.timeStepGenerating unit economic participation factor.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The variable cost component of production per unit of ActivePower.
Same definition as GeneratingUnit.startupCostThe aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
The efficiency of the unit in converting the fuel into electrical energy.
Same definition as GeneratingUnit.governorSCDSpecifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The kind of wind generating unit.
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The planned unused capacity (spinning reserve) which can be used to support emergency load.
Same definition as GeneratingUnit.highControlLimitThe planned unused capacity which can be used to support automatic control overruns.
Same definition as GeneratingUnit.highControlLimitFor dispatchable units, this value represents the economic active power basepoint, for units that are not dispatchable, this value represents the fixed generation value. The value shall be between the operating low and high limits.
Same definition as GeneratingUnit.highControlLimitUnit control error deadband. When a unit's desired active power change is less than this deadband, then no control pulses will be sent to the unit.
Same definition as GeneratingUnit.highControlLimitPulse high limit which is the largest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepPulse low limit which is the smallest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepUnit response rate which specifies the active power change for a control pulse of one second in the most responsive loading level of the unit.
Same definition as GeneratingUnit.lowerRampRateThe efficiency of the unit in converting mechanical energy, from the prime mover, into electrical energy.
Same definition as GeneratingUnit.governorSCDThe aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
The source of controls for a generating unit. Defines the control status of the generating unit.
Same definition as GeneratingUnit.genControlSourceA generating unit whose prime mover could be a steam turbine, combustion turbine, or diesel engine.
The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.
Same definition as GeneratingUnit.GenUnitOpScheduleRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
No Additional ItemsRelationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.
Same definition as GenUnitOpCostCurveGovernor Speed Changer Droop. This is the change in generator power output divided by the change in frequency normalized by the nominal power of the generator and the nominal frequency and expressed in percent and negated. A positive value of speed change droop provides additional generator output upon a drop in frequency.
Same definition as GeneratingUnit.governorSCDHigh limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitDefault initial active power which is used to store a powerflow result for the initial active power for this unit in this network configuration.
Same definition as GeneratingUnit.highControlLimitGenerating unit long term economic participation factor.
Low limit for secondary (AGC) control.
Same definition as GeneratingUnit.highControlLimitThe normal maximum rate the generating unit active power output can be lowered by control actions.
Same definition as GeneratingUnit.lowerRampRateMaximum high economic active power limit, that should not exceed the maximum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMaximum allowable spinning reserve. Spinning reserve will never be considered greater than this value regardless of the current operating point.
Same definition as GeneratingUnit.highControlLimitThis is the maximum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitLow economic active power limit that shall be greater than or equal to the minimum operating active power limit.
Same definition as GeneratingUnit.highControlLimitMinimum time interval between unit shutdown and startup.
Same definition as RegularIntervalSchedule.timeStepThis is the minimum operating active power limit the dispatcher can enter for this unit.
Same definition as GeneratingUnit.highControlLimitDetail level of the generator model data.
Same definition as GeneratingUnit.modelDetailThe nominal power of the generating unit. Used to give precise meaning to percentage based attributes such as the governor speed change droop (governorSCD attribute).
The attribute shall be a positive value equal to or less than RotatingMachine.ratedS.
Generating unit economic participation factor. The sum of the participation factors across generating units does not have to sum to one. It is used for representing distributed slack participation factor. The attribute shall be a positive value or zero.
Defined as: 1 / ( 1 - Incremental Transmission Loss); with the Incremental Transmission Loss expressed as a plus or minus value. The typical range of penalty factors is (0.9 to 1.1).
The normal maximum rate the generating unit active power output can be raised by control actions.
Same definition as GeneratingUnit.lowerRampRateThe unit's gross rated maximum capacity (book value).
The attribute shall be a positive value.
The gross rated minimum generation level which the unit can safely operate at while delivering power to the transmission grid.
The attribute shall be a positive value.
The net rated maximum capacity determined by subtracting the auxiliary power used to operate the internal plant machinery from the rated gross maximum capacity.
The attribute shall be a positive value.
Generating unit short term economic participation factor.
The initial startup cost incurred for each start of the GeneratingUnit.
Same definition as GeneratingUnit.startupCostTime it takes to get the unit on-line, from the time that the prime mover mechanical power is applied.
Same definition as RegularIntervalSchedule.timeStepGenerating unit economic participation factor.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The variable cost component of production per unit of ActivePower.
Same definition as GeneratingUnit.startupCostThe aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
The efficiency of the unit in converting the fuel into electrical energy.
Same definition as GeneratingUnit.governorSCDSpecifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
Operating and maintenance cost for the thermal unit.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The planned unused capacity (spinning reserve) which can be used to support emergency load.
Same definition as GeneratingUnit.highControlLimitThe planned unused capacity which can be used to support automatic control overruns.
Same definition as GeneratingUnit.highControlLimitFor dispatchable units, this value represents the economic active power basepoint, for units that are not dispatchable, this value represents the fixed generation value. The value shall be between the operating low and high limits.
Same definition as GeneratingUnit.highControlLimitUnit control error deadband. When a unit's desired active power change is less than this deadband, then no control pulses will be sent to the unit.
Same definition as GeneratingUnit.highControlLimitPulse high limit which is the largest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepPulse low limit which is the smallest control pulse that the unit can respond to.
Same definition as RegularIntervalSchedule.timeStepUnit response rate which specifies the active power change for a control pulse of one second in the most responsive loading level of the unit.
Same definition as GeneratingUnit.lowerRampRateThe efficiency of the unit in converting mechanical energy, from the prime mover, into electrical energy.
Same definition as GeneratingUnit.governorSCDThe aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
The source of controls for a generating unit. Defines the control status of the generating unit.
Same definition as GeneratingUnit.genControlSourceState variable for status.
No Additional ItemsState variable for status.
The in service status as a result of topology processing. It indicates if the equipment is considered as energized by the power flow. It reflects if the equipment is connected within a solvable island. It does not necessarily reflect whether or not the island was solved by the power flow.
The individual phase status. If the attribute is unspecified, then three phase model is assumed.
Steady-state short-circuit current (in A for the profile) of generator with compound excitation during 3-phase short circuit.
- Ikk=0: Generator with no compound excitation.
- Ikk<>0: Generator with compound excitation.
Ikk is used to calculate the minimum steady-state short-circuit current for generators with compound excitation.
(4.6.1.2 in IEC 60909-0:2001).
Used only for single fed short circuit on a generator. (4.3.4.2. in IEC 60909-0:2001).
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Time delay required when switching from Manual to Automatic Voltage Regulation. This value is used in the accelerating power reference frame for powerflow solutions.
Same definition as RegularIntervalSchedule.timeStepMaximum reactive power limit. This is the maximum (nameplate) limit for the unit.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Maximum voltage limit for the unit.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Minimum reactive power limit for the unit.
Same definition as SynchronousMachine.maxQMinimum voltage limit for the unit.
Same definition as SynchronousMachine.maxUFactor to calculate the breaking current (Section 4.5.2.1 in IEC 60909-0).
Used only for single fed short circuit on a generator (Section 4.3.4.2. in IEC 60909-0).
Current mode of operation.
Part of the coordinated reactive control that comes from this machine. The attribute is used as a participation factor not necessarily summing up to 100% for the participating devices in the control.
Same definition as GeneratingUnit.governorSCDEquivalent resistance (RG) of generator. RG is considered for the calculation of all currents, except for the calculation of the peak current ip. Used for short circuit data exchange according to IEC 60909.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Zero sequence resistance of the synchronous machine.
Same definition as SynchronousMachine.rPriority of unit for use as powerflow voltage phase angle reference bus selection. 0 = don t care (default) 1 = highest priority. 2 is less than 1 and so on.
Direct-axis subtransient reactance saturated, also known as Xd"sat.
Same definition as GeneratingUnit.governorMPLDirect-axes saturated synchronous reactance (xdsat); reciprocal of short-circuit ration. Used for short circuit data exchange, only for single fed short circuit on a generator. (4.3.4.2. in IEC 60909-0:2001).
Same definition as GeneratingUnit.governorMPLSaturated Direct-axis transient reactance. The attribute is primarily used for short circuit calculations according to ANSI.
Same definition as GeneratingUnit.governorMPLType of rotor, used by short circuit applications, only for single fed short circuit according to IEC 60909.
Indicates whether the machine is a converter fed drive. Used for short circuit data exchange according to IEC 60909.
Efficiency of the asynchronous machine at nominal operation as a percentage. Indicator for converter drive motors. Used for short circuit data exchange according to IEC 60909.
Same definition as GeneratingUnit.governorSCDRatio of locked-rotor current to the rated current of the motor (Ia/Ir). Used for short circuit data exchange according to IEC 60909.
Nameplate data indicates if the machine is 50 Hz or 60 Hz.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Modes that this synchronous machine can operate in.
Range of generator voltage regulation (PG in IEC 60909-0) used for calculation of the impedance correction factor KG defined in IEC 60909-0.
This attribute is used to describe the operating voltage of the generating unit.
Nameplate data. Depends on the slip and number of pole pairs.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Zero sequence reactance of the synchronous machine.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Number of pole pairs of stator. Used for short circuit data exchange according to IEC 60909.
Rated mechanical power (Pr in IEC 60909-0). Used for short circuit data exchange according to IEC 60909.
Same definition as GeneratingUnit.highControlLimitIndicates for converter drive motors if the power can be reversible. Used for short circuit data exchange according to IEC 60909.
Locked rotor ratio (R/X). Used for short circuit data exchange according to IEC 60909.
Transient rotor time constant (greater than tppo).
Same definition as RegularIntervalSchedule.timeStepSub-transient rotor time constant (greater than 0).
Same definition as RegularIntervalSchedule.timeStepTransient reactance (unsaturated) (greater than or equal to xpp).
Same definition as SynchronousMachine.x0Sub-transient reactance (unsaturated).
Same definition as SynchronousMachine.x0Synchronous reactance (greater than xp).
Same definition as SynchronousMachine.x0Specifies the regulation status of the equipment. True is regulating, false is not regulating.
Power factor (nameplate data). It is primarily used for short circuit data exchange according to IEC 60909. The attribute cannot be a negative value.
Nameplate apparent power rating for the unit.
The attribute shall have a positive value.
nan
Same definition as BasicIntervalSchedule.value2Multipliernan
Rated voltage (nameplate data, Ur in IEC 60909-0). It is primarily used for short circuit data exchange according to IEC 60909.
The attribute shall be a positive value.
Active power injection. Load sign convention is used, i.e. positive sign means flow out from a node.
Starting value for a steady state solution.
Reactive power injection. Load sign convention is used, i.e. positive sign means flow out from a node.
Starting value for a steady state solution.
The aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine.
The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.
The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.
The equipment is enabled to participate in network analysis. If unspecified, the value is assumed to be true.
Specifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
The aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy.
The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.
Indicates the type of Asynchronous Machine (motor or generator).
Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended.
For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.
The name is any free human readable and possibly non unique text naming the object.
Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.
Time delay required when switching from Automatic Voltage Regulation (AVR) to Manual for a lagging MVAr violation.
Same definition as RegularIntervalSchedule.timeStepTime delay required when switching from Automatic Voltage Regulation (AVR) to Manual for a leading MVAr violation.
Same definition as RegularIntervalSchedule.timeStepDefault base reactive power value. This value represents the initial reactive power that can be used by any application function.
Same definition as SynchronousMachine.maxQActive power consumed when in condenser mode operation.
Same definition as GeneratingUnit.highControlLimitTemperature or pressure of coolant medium.
Method of cooling the machine.
Indicates whether or not the generator is earthed. Used for short circuit data exchange according to IEC 60909.
Generator star point earthing resistance (Re). Used for short circuit data exchange according to IEC 60909.
Same definition as SynchronousMachine.rGenerator star point earthing reactance (Xe). Used for short circuit data exchange according to IEC 60909.
Same definition as SynchronousMachine.x0