`TopologicalIsland`

An electrically connected subset of the network. Topological islands can change as the current network state changes, e.g. due to: - disconnect switches or breakers changing state in a SCADA/EMS. - manual creation, change or deletion of topological nodes in a planning tool. Only energised TopologicalNode-s shall be part of the topological island.

Type	Class
URI	`cim:TopologicalIsland`
CIM standard (perspective)	IEC61970 (Grid)

Type

Class

URI

cim:TopologicalIsland

CIM standard (perspective)

IEC61970 (Grid)

Class hierarchy

IdentifiedObject
- TopologicalIsland

Slots

Figure 1. Associated classes

Name Cardinality Type Description

Name	Cardinality	Type	Description
`TopologicalNodes`	1..*	`TopologicalNode`	A topological node belongs to a topological island.
`InstanceSet`	1	`InstanceSet`	Dataset containing the data objects.
`AngleRefTopologicalNode`	0..1	`TopologicalNode`	The angle reference for the island. Normally there is one TopologicalNode that is selected as the angle reference for each island. Other reference schemes exist, so the association is typically optional.
`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.
`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.

TopologicalNodes

1..*

TopologicalNode

A topological node belongs to a topological island.

InstanceSet

Dataset containing the data objects.

AngleRefTopologicalNode

0..1

TopologicalNode

The angle reference for the island. Normally there is one TopologicalNode that is selected as the angle reference for each island. Other reference schemes exist, so the association is typically optional.

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.

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.