Terminal

An AC electrical connection point to a piece of conducting equipment. Terminals are connected at physical connection points called connectivity nodes.

Type

Class

URI?

cim:Terminal

CIM standard (perspective)

IEC61970 (Grid)

Class hierarchy

Slots

Associated classes
Figure 1. Associated classes
Name Cardinality? Type Description

conducting_equipment

1

ConductingEquipment

The conducting equipment of the terminal. Conducting equipment have terminals that may be connected to other conducting equipment terminals via connectivity nodes or topological nodes.

connectivity_node

0..1

ConnectivityNode

The connectivity node to which this terminal connects with zero impedance.

phases

0..1

PhaseCode

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.

connected

0..1

boolean

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.

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.

m_rid

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.

sequence_number

0..1

integer

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.

names

0..*

Name

All names of this identified object.


conducting_equipment

The conducting equipment of the terminal. Conducting equipment have terminals that may be connected to other conducting equipment terminals via connectivity nodes or topological nodes.

URI

cim:Terminal.ConductingEquipment

Cardinality?

1

Type

ConductingEquipment

connected

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.

URI

cim:ACDCTerminal.connected

Cardinality?

0..1

Type

boolean

Inherited from

ACDCTerminal

connectivity_node

The connectivity node to which this terminal connects with zero impedance.

URI

cim:Terminal.ConnectivityNode

Cardinality?

0..1

Type

ConnectivityNode

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

m_rid

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

names

All names of this identified object.

URI

cim:IdentifiedObject.Names

Cardinality?

0..*

Type

Name

Inherited from

IdentifiedObject

phases

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.

URI

cim:Terminal.phases

Cardinality?

0..1

Type

PhaseCode

sequence_number

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.

URI

cim:ACDCTerminal.sequenceNumber

Cardinality?

0..1

Type

integer

Inherited from

ACDCTerminal