CIM Issues #5064
Update the description on the PhaseCode and SinglePhaseCode classes to better clarify balanced and unbalanced usages.
61970-301
Description
IEC TS 62361-102 Recommendation R10:
There are two enumerations in CIM: one for single phase and the other for all phase enumerations. The descriptions of the enumerations are not clear (they appear to overlap)
Revised recommendation: clarify the descriptions.
Split the description in clause 4.5.8 into distinct paragraphs to explain balanced and unbalanced network models.
Proposed Solution
WG19 IEC TS 62361-102:2018 proposed changes:
clarify the descriptions.
Clause 4.5.8 (In CIM18 JCleanCim Template)
The CIM models provide a means to specify equivalent single-line representation of balanced three phase networks and optionally specify the details for individual phases using instances of the xxxPhase classes.
When modelled as unbalanced, single phase networks there is a direct correspondence between Terminal objects and physical wire connections.
In the single-line representation of balanced three phase networks we use one Terminal to represent the group of coordinating phase connections. . etc
PhaseCode
Enumeration of phase identifiers used to designate the combination of phase and/or neutral conductors at a terminal, measurement or equipment modelled as a single-line balanced equivalent.
This is an unordered enumeration of phase identifiers. Allows designation of phases for both transmission and distribution equipment, circuits and loads. The enumeration, by itself, does not describe how the phases are connected together or connected to ground. Ground is not explicitly denoted as a phase.
Residential and small commercial loads are often served from single-phase, or split-phase, secondary circuits. For the example of s12N, phases 1 and 2 refer to hot wires that are 180 degrees out of phase, while N refers to the neutral wire. Through single-phase transformer connections, these secondary circuits may be served from one or two of the primary phases A, B, and C. For three-phase loads, use the A, B, C phase codes instead of s12N.
The integer values are from IEC 61968-9 to support revenue metering applications.
SinglePhaseKind
Enumeration of phase identifiers used to designate the specific phase of conducting equipment modelled as individual unbalanced phases.
Allows designation of specific phases for transmission and distribution equipment, circuits and loads.
Decision
Review by WG13 on 29-Jan-2020 resulted in consensus to apply the proposed changes.
Release Notes
The descriptions of PhaseCode and SinglePhaseKind enumerations were updated as
part of IEC 61850 harmonization recommendations (Recommendation R10). This to
better clarify their use for balanced and unbalanced models.
Updated by Todd Viegut over 2 years ago
- Subject changed from IEC TS 62361-102 Recommendation R10: There are two enumera to Update the description on the PhaseCode class to better clarify its usage.
- Solution to be Applied To changed from 61970cim18 to CIM18
- Solution Version changed from CIM18 to CIM18v00
- Solution Applied By changed from tviegut to Todd Viegut
- Proposed Solution updated (diff)
- Standard(s) set to 61970-301
- Version set to Ed 8.0
- Clause set to 4.5.8
- Decision updated (diff)
Updated by Todd Viegut over 2 years ago
- Subject changed from Update the description on the PhaseCode class to better clarify its usage. to Update the description on the PhaseCode and SinglePhaseCode classes to better clarify balanced and unbalanced usages.
- Release Notes updated (diff)