ExcIEEEAC3A

IEEE 421.5-2005 type AC3A model. The model represents the field-controlled alternator-rectifier excitation systems designated type AC3A. These excitation systems include an alternator main exciter with non-controlled rectifiers. The exciter employs self-excitation, and the voltage regulator power is derived from the exciter output voltage. Therefore, this system has an additional nonlinearity, simulated by the use of a multiplier whose inputs are the voltage regulator command signal, Va, and the exciter output voltage, Efd, times KR. This model is applicable to excitation systems employing static voltage regulators. Reference: IEEE 421.5-2005, 6.3.

Type

Class

URI

cim:ExcIEEEAC3A

CIM standard (perspective)

IEC61970 (Grid)

Slots

Associated classes
Figure 1. Associated classes
Name Cardinality Type Description

InstanceSet

1

InstanceSet

Dataset containing the data objects.

SynchronousMachineDynamics

1

SynchronousMachineDynamics

Synchronous machine model with which this excitation system model is associated.

VoltageCompensatorDynamics

1

VoltageCompensatorDynamics

Voltage compensator model associated with this excitation system model.

efdn

0..1

PU

Value of Efd at which feedback gain changes (EFDN) (> 0). Typical value = 2,36.

ka

0..1

PU

Voltage regulator gain (KA) (> 0). Typical value = 45,62.

kc

0..1

PU

Rectifier loading factor proportional to commutating reactance (KC) (>= 0). Typical value = 0,104.

kd

0..1

PU

Demagnetizing factor, a function of exciter alternator reactances (KD) (>= 0). Typical value = 0,499.

ke

0..1

PU

Exciter constant related to self-excited field (KE). Typical value = 1.

kf

0..1

PU

Excitation control system stabilizer gains (KF) (>= 0). Typical value = 0,143.

kn

0..1

PU

Excitation control system stabilizer gain (KN) (>= 0). Typical value = 0,05.

kr

0..1

PU

Constant associated with regulator and alternator field power supply (KR) (> 0). Typical value = 3,77.

seve1

0..1

float

Exciter saturation function value at the corresponding exciter voltage, VE1, back of commutating reactance (SE[VE1]) (>= 0). Typical value = 1,143.

seve2

0..1

float

Exciter saturation function value at the corresponding exciter voltage, VE2, back of commutating reactance (SE[VE2]) (>= 0). Typical value = 0,1.

ta

0..1

Seconds

Voltage regulator time constant (TA) (> 0). Typical value = 0,013.

tb

0..1

Seconds

Voltage regulator time constant (TB) (>= 0). Typical value = 0.

tc

0..1

Seconds

Voltage regulator time constant (TC) (>= 0). Typical value = 0.

te

0..1

Seconds

Exciter time constant, integration rate associated with exciter control (TE) (> 0). Typical value = 1,17.

tf

0..1

Seconds

Excitation control system stabilizer time constant (TF) (> 0). Typical value = 1.

vamax

0..1

PU

Maximum voltage regulator output (VAMAX) (> 0). Typical value = 1.

vamin

0..1

PU

Minimum voltage regulator output (VAMIN) (< 0). Typical value = -0,95.

ve1

0..1

PU

Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE1) (> 0). Typical value = 6,24.

ve2

0..1

PU

Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE2) (> 0). Typical value = 4,68.

vemin

0..1

PU

Minimum exciter voltage output (VEMIN) (<= 0). Typical value = 0.

vfemax

0..1

PU

Exciter field current limit reference (VFEMAX) (>= 0). Typical value = 16.

DiscontinuousExcitationControlDynamics

0..1

DiscontinuousExcitationControlDynamics

Discontinuous excitation control model associated with this excitation system model.

OverexcitationLimiterDynamics

0..1

OverexcitationLimiterDynamics

Overexcitation limiter model associated with this excitation system model.

PFVArControllerType1Dynamics

0..1

PFVArControllerType1Dynamics

Power factor or VAr controller type 1 model associated with this excitation system model.

PFVArControllerType2Dynamics

0..1

PFVArControllerType2Dynamics

Power factor or VAr controller type 2 model associated with this excitation system model.

PowerSystemStabilizerDynamics

0..1

PowerSystemStabilizerDynamics

Power system stabilizer model associated with this excitation system model.

PropertiesCIMDataObject

0..1

ChangeSetMember

The single CIM data object in the appropriate dataset context.

UnderexcitationLimiterDynamics

0..1

UnderexcitationLimiterDynamics

Undrexcitation limiter model associated with this excitation system model.

aliasName

0..1

string

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.

description

0..1

string

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.

enabled

0..1

boolean

Function block used indicator. true = use of function block is enabled false = use of function block is disabled.

mRID

0..1

string

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.

name

0..1

string

The name is any free human readable and possibly non unique text naming the object.

DiagramObjects

0..*

DiagramObject

The diagram objects that are associated with the domain object.

Names

0..*

Name

All names of this identified object.

TargetingCIMDataObject

0..*

ChangeSetMember

Data objects registered.


aliasName

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.

URI

cim:IdentifiedObject.aliasName

Cardinality

0..1

Type

string

Inherited from

IdentifiedObject

description

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.

URI

cim:IdentifiedObject.description

Cardinality

0..1

Type

string

Inherited from

IdentifiedObject

DiagramObjects

The diagram objects that are associated with the domain object.

URI

cim:IdentifiedObject.DiagramObjects

Cardinality

0..*

Type

DiagramObject

Inherited from

IdentifiedObject

DiscontinuousExcitationControlDynamics

Discontinuous excitation control model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.DiscontinuousExcitationControlDynamics

Cardinality

0..1

Type

DiscontinuousExcitationControlDynamics

Inherited from

ExcitationSystemDynamics

efdn

Value of Efd at which feedback gain changes (EFDN) (> 0). Typical value = 2,36.

URI

cim:ExcIEEEAC3A.efdn

Cardinality

0..1

Type

PU

enabled

Function block used indicator. true = use of function block is enabled false = use of function block is disabled.

URI

cim:DynamicsFunctionBlock.enabled

Cardinality

0..1

Type

boolean

Inherited from

DynamicsFunctionBlock

InstanceSet

Dataset containing the data objects.

URI

cim:IdentifiedObject.InstanceSet

Cardinality

1

Type

InstanceSet

Inherited from

IdentifiedObject

ka

Voltage regulator gain (KA) (> 0). Typical value = 45,62.

URI

cim:ExcIEEEAC3A.ka

Cardinality

0..1

Type

PU

kc

Rectifier loading factor proportional to commutating reactance (KC) (>= 0). Typical value = 0,104.

URI

cim:ExcIEEEAC3A.kc

Cardinality

0..1

Type

PU

kd

Demagnetizing factor, a function of exciter alternator reactances (KD) (>= 0). Typical value = 0,499.

URI

cim:ExcIEEEAC3A.kd

Cardinality

0..1

Type

PU

ke

Exciter constant related to self-excited field (KE). Typical value = 1.

URI

cim:ExcIEEEAC3A.ke

Cardinality

0..1

Type

PU

kf

Excitation control system stabilizer gains (KF) (>= 0). Typical value = 0,143.

URI

cim:ExcIEEEAC3A.kf

Cardinality

0..1

Type

PU

kn

Excitation control system stabilizer gain (KN) (>= 0). Typical value = 0,05.

URI

cim:ExcIEEEAC3A.kn

Cardinality

0..1

Type

PU

kr

Constant associated with regulator and alternator field power supply (KR) (> 0). Typical value = 3,77.

URI

cim:ExcIEEEAC3A.kr

Cardinality

0..1

Type

PU

mRID

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.

URI

cim:IdentifiedObject.mRID

Cardinality

0..1

Type

string

Inherited from

IdentifiedObject

name

The name is any free human readable and possibly non unique text naming the object.

URI

cim:IdentifiedObject.name

Cardinality

0..1

Type

string

Inherited from

IdentifiedObject

Names

All names of this identified object.

URI

cim:IdentifiedObject.Names

Cardinality

0..*

Type

Name

Inherited from

IdentifiedObject

OverexcitationLimiterDynamics

Overexcitation limiter model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.OverexcitationLimiterDynamics

Cardinality

0..1

Type

OverexcitationLimiterDynamics

Inherited from

ExcitationSystemDynamics

PFVArControllerType1Dynamics

Power factor or VAr controller type 1 model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.PFVArControllerType1Dynamics

Cardinality

0..1

Type

PFVArControllerType1Dynamics

Inherited from

ExcitationSystemDynamics

PFVArControllerType2Dynamics

Power factor or VAr controller type 2 model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.PFVArControllerType2Dynamics

Cardinality

0..1

Type

PFVArControllerType2Dynamics

Inherited from

ExcitationSystemDynamics

PowerSystemStabilizerDynamics

Power system stabilizer model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.PowerSystemStabilizerDynamics

Cardinality

0..1

Type

PowerSystemStabilizerDynamics

Inherited from

ExcitationSystemDynamics

PropertiesCIMDataObject

The single CIM data object in the appropriate dataset context.

URI

cim:IdentifiedObject.PropertiesCIMDataObject

Cardinality

0..1

Type

ChangeSetMember

Inherited from

IdentifiedObject

seve1

Exciter saturation function value at the corresponding exciter voltage, VE1, back of commutating reactance (SE[VE1]) (>= 0). Typical value = 1,143.

URI

cim:ExcIEEEAC3A.seve1

Cardinality

0..1

Type

float

seve2

Exciter saturation function value at the corresponding exciter voltage, VE2, back of commutating reactance (SE[VE2]) (>= 0). Typical value = 0,1.

URI

cim:ExcIEEEAC3A.seve2

Cardinality

0..1

Type

float

SynchronousMachineDynamics

Synchronous machine model with which this excitation system model is associated.

URI

cim:ExcitationSystemDynamics.SynchronousMachineDynamics

Cardinality

1

Type

SynchronousMachineDynamics

Inherited from

ExcitationSystemDynamics

ta

Voltage regulator time constant (TA) (> 0). Typical value = 0,013.

URI

cim:ExcIEEEAC3A.ta

Cardinality

0..1

Type

Seconds

TargetingCIMDataObject

Data objects registered.

URI

cim:IdentifiedObject.TargetingCIMDataObject

Cardinality

0..*

Type

ChangeSetMember

Inherited from

IdentifiedObject

tb

Voltage regulator time constant (TB) (>= 0). Typical value = 0.

URI

cim:ExcIEEEAC3A.tb

Cardinality

0..1

Type

Seconds

tc

Voltage regulator time constant (TC) (>= 0). Typical value = 0.

URI

cim:ExcIEEEAC3A.tc

Cardinality

0..1

Type

Seconds

te

Exciter time constant, integration rate associated with exciter control (TE) (> 0). Typical value = 1,17.

URI

cim:ExcIEEEAC3A.te

Cardinality

0..1

Type

Seconds

tf

Excitation control system stabilizer time constant (TF) (> 0). Typical value = 1.

URI

cim:ExcIEEEAC3A.tf

Cardinality

0..1

Type

Seconds

UnderexcitationLimiterDynamics

Undrexcitation limiter model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.UnderexcitationLimiterDynamics

Cardinality

0..1

Type

UnderexcitationLimiterDynamics

Inherited from

ExcitationSystemDynamics

vamax

Maximum voltage regulator output (VAMAX) (> 0). Typical value = 1.

URI

cim:ExcIEEEAC3A.vamax

Cardinality

0..1

Type

PU

vamin

Minimum voltage regulator output (VAMIN) (< 0). Typical value = -0,95.

URI

cim:ExcIEEEAC3A.vamin

Cardinality

0..1

Type

PU

ve1

Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE1) (> 0). Typical value = 6,24.

URI

cim:ExcIEEEAC3A.ve1

Cardinality

0..1

Type

PU

ve2

Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE2) (> 0). Typical value = 4,68.

URI

cim:ExcIEEEAC3A.ve2

Cardinality

0..1

Type

PU

vemin

Minimum exciter voltage output (VEMIN) (<= 0). Typical value = 0.

URI

cim:ExcIEEEAC3A.vemin

Cardinality

0..1

Type

PU

vfemax

Exciter field current limit reference (VFEMAX) (>= 0). Typical value = 16.

URI

cim:ExcIEEEAC3A.vfemax

Cardinality

0..1

Type

PU

VoltageCompensatorDynamics

Voltage compensator model associated with this excitation system model.

URI

cim:ExcitationSystemDynamics.VoltageCompensatorDynamics

Cardinality

1

Type

VoltageCompensatorDynamics

Inherited from

ExcitationSystemDynamics