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PhaseTapChangerLinear

Describes a tap changer with a linear relation between the tap step and the phase angle difference across the transformer. This is a mathematical model that is an approximation of a real phase tap changer.The phase angle is computed as stepPhaseShiftIncrement times the tap position.The voltage magnitude of both sides is the same.

URI: cim:PhaseTapChangerLinear
Type: Class

PhaseTapChangerLinear class diagram

Inheritance

Attributes

Name URI Cardinality and Range Inheritance Description
stepPhaseShiftIncrement cim:PhaseTapChangerLinear.stepPhaseShiftIncrement 1..1 AngleDegrees direct Phase shift per step position. A positive value indicates a positive angle variation from the Terminal at the PowerTransformerEnd, where the TapChanger is located, into the transformer.The actual phase shift increment might be more accurately computed from the symmetrical or asymmetrical models or a tap step table lookup if those are available.
xMax cim:PhaseTapChangerLinear.xMax 1..1 Reactance direct The reactance depends on the tap position according to a u shaped curve. The maximum reactance (xMax) appears at the low and high tap positions. Depending on the “u” curve the attribute can be either higher or lower than PowerTransformerEnd.x.
xMin cim:PhaseTapChangerLinear.xMin 0..1 Reactance direct The reactance depends on the tap position according to a u shaped curve. The minimum reactance (xMin) appears at the mid tap position. PowerTransformerEnd.x shall be consistent with PhaseTapChangerLinear.xMin and PhaseTapChangerNonLinear.xMin. In case of inconsistency, PowerTransformerEnd.x shall be used.
TransformerEnd cim:PhaseTapChanger.TransformerEnd 1..1 TransformerEnd PhaseTapChanger Transformer end to which this phase tap changer belongs.
highStep cim:TapChanger.highStep 1..1 integer TapChanger Highest possible tap step position, advance from neutral.The attribute shall be greater than lowStep.
lowStep cim:TapChanger.lowStep 1..1 integer TapChanger Lowest possible tap step position, retard from neutral.
ltcFlag cim:TapChanger.ltcFlag 1..1 boolean TapChanger Specifies whether or not a TapChanger has load tap changing capabilities.
neutralStep cim:TapChanger.neutralStep 1..1 integer TapChanger The neutral tap step position for this winding.The attribute shall be equal to or greater than lowStep and equal or less than highStep.It is the step position where the voltage is neutralU when the other terminals of the transformer are at the ratedU. If there are other tap changers on the transformer those taps are kept constant at their neutralStep.
neutralU cim:TapChanger.neutralU 1..1 Voltage TapChanger Voltage at which the winding operates at the neutral tap setting. It is the voltage at the terminal of the PowerTransformerEnd associated with the tap changer when all tap changers on the transformer are at their neutralStep position. Normally neutralU of the tap changer is the same as ratedU of the PowerTransformerEnd, but it can differ in special cases such as when the tapping mechanism is separate from the winding more common on lower voltage transformers.This attribute is not relevant for PhaseTapChangerAsymmetrical, PhaseTapChangerSymmetrical and PhaseTapChangerLinear.
normalStep cim:TapChanger.normalStep 1..1 integer TapChanger The tap step position used in normal network operation for this winding. For a Fixed tap changer indicates the current physical tap setting.The attribute shall be equal to or greater than lowStep and equal to or less than highStep.
TapChangerControl cim:TapChanger.TapChangerControl 0..1 TapChangerControl TapChanger The regulating control scheme in which this tap changer participates.
mRID cim:IdentifiedObject.mRID 1..1 string IdentifiedObject 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.
description cim:IdentifiedObject.description 0..1 string IdentifiedObject 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.
energyIdentCodeEic eu:IdentifiedObject.energyIdentCodeEic 0..1 string IdentifiedObject The attribute is used for an exchange of the EIC code (Energy identification Code). The length of the string is 16 characters as defined by the EIC code. For details on EIC scheme please refer to ENTSO-E web site.
name cim:IdentifiedObject.name 1..1 string IdentifiedObject The name is any free human readable and possibly non unique text naming the object.
shortName eu:IdentifiedObject.shortName 0..1 string IdentifiedObject The attribute is used for an exchange of a human readable short name with length of the string 12 characters maximum.

Format Examples

{
    "@context": {"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#", "linkml": "https://w3id.org/linkml/", "sh": "http://www.w3.org/ns/shacl#", "skos": "http://www.w3.org/2004/02/skos/core#", "dc": "http://purl.org/dc/elements/1.1/", "profcim": "http://iec.ch/TC57/ns/CIM/prof-cim#", "owl": "http://www.w3.org/2002/07/owl#", "cim": "http://iec.ch/TC57/CIM100#", "this": "http://ucaiug.org/ns/CGMES/CoreEquipment-EU/3.0#", "cims": "http://iec.ch/TC57/1999/rdf-schema-extensions-19990926#", "dct": "http://purl.org/dc/terms/", "rdfs": "http://www.w3.org/2000/01/rdf-schema#", "dcat": "http://www.w3.org/ns/dcat#", "eu": "http://iec.ch/TC57/CIM100-European#"},
    "@id": "urn:uuid:<uuid>",
    "@type": "cim:PhaseTapChangerLinear",
    "cim:PhaseTapChangerLinear.stepPhaseShiftIncrement": "float",
    "cim:PhaseTapChangerLinear.xMax": "float",
    "cim:PhaseTapChangerLinear.xMin": "float",
    "cim:PhaseTapChanger.TransformerEnd": { "@id": "urn:uuid:<uuid of TransformerEnd>" },
    "cim:TapChanger.highStep": "integer",
    "cim:TapChanger.lowStep": "integer",
    "cim:TapChanger.ltcFlag": "boolean",
    "cim:TapChanger.neutralStep": "integer",
    "cim:TapChanger.neutralU": "float",
    "cim:TapChanger.normalStep": "integer",
    "cim:TapChanger.TapChangerControl": { "@id": "urn:uuid:<uuid of TapChangerControl>" },
    "cim:IdentifiedObject.mRID": "string",
    "cim:IdentifiedObject.description": "string",
    "eu:IdentifiedObject.energyIdentCodeEic": "string",
    "cim:IdentifiedObject.name": "string",
    "eu:IdentifiedObject.shortName": "string"
}

<cim:PhaseTapChangerLinear rdf:ID="_<uuid>">
    <cim:PhaseTapChangerLinear.stepPhaseShiftIncrement>float</cim:PhaseTapChangerLinear.stepPhaseShiftIncrement>
    <cim:PhaseTapChangerLinear.xMax>float</cim:PhaseTapChangerLinear.xMax>
    <cim:PhaseTapChangerLinear.xMin>float</cim:PhaseTapChangerLinear.xMin>
    <cim:PhaseTapChanger.TransformerEnd rdf:resource="#_<uuid of TransformerEnd>" />
    <cim:TapChanger.highStep>integer</cim:TapChanger.highStep>
    <cim:TapChanger.lowStep>integer</cim:TapChanger.lowStep>
    <cim:TapChanger.ltcFlag>boolean</cim:TapChanger.ltcFlag>
    <cim:TapChanger.neutralStep>integer</cim:TapChanger.neutralStep>
    <cim:TapChanger.neutralU>float</cim:TapChanger.neutralU>
    <cim:TapChanger.normalStep>integer</cim:TapChanger.normalStep>
    <cim:TapChanger.TapChangerControl rdf:resource="#_<uuid of TapChangerControl>" />
    <cim:IdentifiedObject.mRID>string</cim:IdentifiedObject.mRID>
    <cim:IdentifiedObject.description>string</cim:IdentifiedObject.description>
    <eu:IdentifiedObject.energyIdentCodeEic>string</eu:IdentifiedObject.energyIdentCodeEic>
    <cim:IdentifiedObject.name>string</cim:IdentifiedObject.name>
    <eu:IdentifiedObject.shortName>string</eu:IdentifiedObject.shortName>
</cim:PhaseTapChangerLinear>

{
    "stepPhaseShiftIncrement": "float",
    "xMax": "float",
    "xMin": "float",
    "TransformerEnd": "<TransformerEnd>",
    "highStep": "integer",
    "lowStep": "integer",
    "ltcFlag": "boolean",
    "neutralStep": "integer",
    "neutralU": "float",
    "normalStep": "integer",
    "TapChangerControl": "<TapChangerControl>",
    "mRID": "string",
    "description": "string",
    "energyIdentCodeEic": "string",
    "name": "string",
    "shortName": "string"
}

<urn:uuid:<graph-id>> {
    <urn:uuid:<uuid>>
        a cim:PhaseTapChangerLinear ;
        cim:PhaseTapChangerLinear.stepPhaseShiftIncrement "float" ;
        cim:PhaseTapChangerLinear.xMax "float" ;
        cim:PhaseTapChangerLinear.xMin "float" ;
        cim:PhaseTapChanger.TransformerEnd <urn:uuid:<uuid of TransformerEnd>> ;
        cim:TapChanger.highStep "integer" ;
        cim:TapChanger.lowStep "integer" ;
        cim:TapChanger.ltcFlag "boolean" ;
        cim:TapChanger.neutralStep "integer" ;
        cim:TapChanger.neutralU "float" ;
        cim:TapChanger.normalStep "integer" ;
        cim:TapChanger.TapChangerControl <urn:uuid:<uuid of TapChangerControl>> ;
        cim:IdentifiedObject.mRID "string" ;
        cim:IdentifiedObject.description "string" ;
        eu:IdentifiedObject.energyIdentCodeEic "string" ;
        cim:IdentifiedObject.name "string" ;
        eu:IdentifiedObject.shortName "string" .
}

Schema Source