OverexcLimIEEE

The over excitation limiter model is intended to represent the significant features of OELs necessary for some large-scale system studies. It is the result of a pragmatic approach to obtain a model that can be widely applied with attainable data from generator owners. An attempt to include all variations in the functionality of OELs and duplicate how they interact with the rest of the excitation systems would likely result in a level of application insufficient for the studies for which they are intended. Reference: IEEE OEL 421.5-2005, 9.

Type

Class

URI

cim:OverexcLimIEEE

CIM standard (perspective)

IEC61970 (Grid)

Slots

Associated classes
Figure 1. Associated classes
Name Cardinality Type Description

ExcitationSystemDynamics

1

ExcitationSystemDynamics

Excitation system model with which this overexcitation limiter model is associated.

InstanceSet

1

InstanceSet

Dataset containing the data objects.

hyst

0..1

PU

OEL pickup/drop-out hysteresis (HYST). Typical value = 0,03.

ifdlim

0..1

PU

OEL timed field current limit (IFDLIM). Typical value = 1,05.

ifdmax

0..1

PU

OEL instantaneous field current limit (IFDMAX). Typical value = 1,5.

itfpu

0..1

PU

OEL timed field current limiter pickup level (ITFPU). Typical value = 1,05.

kcd

0..1

PU

OEL cooldown gain (KCD). Typical value = 1.

kramp

0..1

float

OEL ramped limit rate (KRAMP). Unit = PU / s. Typical value = 10.

PropertiesCIMDataObject

0..1

ChangeSetMember

The single CIM data object in the appropriate dataset context.

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

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

ExcitationSystemDynamics

Excitation system model with which this overexcitation limiter model is associated.

URI

cim:OverexcitationLimiterDynamics.ExcitationSystemDynamics

Cardinality

1

Type

ExcitationSystemDynamics

Inherited from

OverexcitationLimiterDynamics

hyst

OEL pickup/drop-out hysteresis (HYST). Typical value = 0,03.

URI

cim:OverexcLimIEEE.hyst

Cardinality

0..1

Type

PU

ifdlim

OEL timed field current limit (IFDLIM). Typical value = 1,05.

URI

cim:OverexcLimIEEE.ifdlim

Cardinality

0..1

Type

PU

ifdmax

OEL instantaneous field current limit (IFDMAX). Typical value = 1,5.

URI

cim:OverexcLimIEEE.ifdmax

Cardinality

0..1

Type

PU

InstanceSet

Dataset containing the data objects.

URI

cim:IdentifiedObject.InstanceSet

Cardinality

1

Type

InstanceSet

Inherited from

IdentifiedObject

itfpu

OEL timed field current limiter pickup level (ITFPU). Typical value = 1,05.

URI

cim:OverexcLimIEEE.itfpu

Cardinality

0..1

Type

PU

kcd

OEL cooldown gain (KCD). Typical value = 1.

URI

cim:OverexcLimIEEE.kcd

Cardinality

0..1

Type

PU

kramp

OEL ramped limit rate (KRAMP). Unit = PU / s. Typical value = 10.

URI

cim:OverexcLimIEEE.kramp

Cardinality

0..1

Type

float

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

PropertiesCIMDataObject

The single CIM data object in the appropriate dataset context.

URI

cim:IdentifiedObject.PropertiesCIMDataObject

Cardinality

0..1

Type

ChangeSetMember

Inherited from

IdentifiedObject

TargetingCIMDataObject

Data objects registered.

URI

cim:IdentifiedObject.TargetingCIMDataObject

Cardinality

0..*

Type

ChangeSetMember

Inherited from

IdentifiedObject