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BSI PD IEC/TS 62361-102:2018

BSI PD IEC/TS 62361-102:2018

$215.11

Power systems management and associated information exchange. Interoperability in the long term – CIM. IEC 61850 harmonization

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BSI 2018 122
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This part of IEC 62361, which is a Technical Specification, outlines a technical approach for achieving effective information exchange between power system installations governed by IEC 61850 and business systems integrated with IEC CIM standard data exchanges, based on a selected specific set of use cases, but also with the goal of creating a framework that will extend successfully to other use cases in the future. This document includes proposals to ‘harmonize’ the two standards by adapting or extending existing information models and/or defining new models, where such changes will enable more effective communication. Both current and future directions of models will be considered. The report will take into account existing standards for semantics, services, protocols, system configuration language, and architecture.

It was intended to be coordinated with IEC 61850 and all affiliated subgroups as well as IEC 61968 and IEC 61970. This edition of the document was prepared based on Edition 2 of IEC 61850-6 (2009), IEC 61850-7-3 and IEC 61850-7-4 and has been updated to match the forthcoming Edition 2.1. Mapping to other parts of IEC 61850 is incomplete. Mapping has been considered for the CIM classes defined in IEC 61970-301. The mapping to CIM classes defined in IEC 61968-11 and other standards is incomplete.

This document suggests a technical approach by which two of the leading standards for software interoperability that serve the electric utility industry (the Common Information Model, CIM, and the IEC 61850 model) can cooperate in order to enable effective data exchanges between the domains covered by these standards. Both of these standards are maintained by the International Electrotechnical Committee (IEC).

A number of studies and reports have already been produced on the subject of harmonization as listed in the Bibliography.

The work leading to this Technical Specification has considered how exchanges required by commonly understood use cases might be mapped between the standard models in order to determine the harmonizing changes suggested for the relevant models. The report references any papers, reports or other documents that provided data for this harmonization.

The approach is to define a transformation of the data governed by IEC 61850 SCL XSD to data governed by CIM UML. The transformations in this document are defined based on the use cases presented in this document. Only SCL data relevant to these use cases is transformed.

The aim is to allow the development of tools that perform automatic transformation from an SCL instance file into a CIM based instance model that can then be exported using existing standards such as IEC 61970-552: CIMXML Model exchange format.

These transformations will result in CIM-side processes that can distribute the information as needed for configuration of specific CIM applications. It is also presumed that the result of this exchange will be to enable creation of real-time CIM-side clients for IEC 61850 system data.

The heart of the SCL to CIM transformation specification defined in this document is a mapping between the two information models. Wherever this mapping has been judged to be unnecessarily complex, changes have been recommended to the existing information models.

A major objective, however, has been to define a solution that does not change either SCL or CIM UML without a mechanism to supply backward compatibility.

The transformation specification is only for structural modelling. IEC 61970-301 states “CIM entities have no behaviour.” IEC 61850-5 states “the behaviour of the functions itself are … outside the scope of this standard”.

This document is a Technical Specification − not a standard. Paragraphs introduced by the word Recommendation are recommendations for revisions to some of the IEC 61850 and CIM standards. It is anticipated that if these recommendations are accepted, then this report can be revised and elevated to a standard.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
13 2 Normative references
3 Terms, definitions and abbreviated terms
14 3.1 Terms and definitions
3.2 Abbreviated terms
15 4 Use case summary
4.1 General
4.2 SCADA/EMS/DMS configuration from IEC 61850 SCL
16 4.3 Importing SCADA/EMS/DMS requirements into IEC 61850 SCL
4.3.1 General
4.3.2 Recommendation for harmonization: SCL Process/Substation/Line section
4.4 SCADA commissioning use case
17 4.5 Volt Var control use case
Figures
Figure 1 – IEC 61850 and CIM data flows
18 4.6 Wide Area Monitoring, Protection and Control (WAMPAC) for transient stability
5 Mapping SCL to SCADA/EMS/DMS relevant CIM
5.1 Business requirements
Figure 2 – Mapping for Wide Area Monitoring Protection and Control
19 5.2 Profiles
5.3 IEC 61850 modelling principles
5.3.1 Introduction
5.3.2 System Configuration description Language (SCL)
5.3.3 Logical Devices and Logical Nodes
20 5.3.4 SCL sections
5.4 Mapping overview
5.4.1 SCL Document Types
21 5.4.2 General mapping principles
Tables
Table 1 – Overview of SCL and CIM counterparts
23 Figure 3 – Equipment mapping
24 5.5 SCL Substation section mapping
5.5.1 Overview
Figure 4 – Example of equipment and status measurement mapping
26 Figure 5 – UML class diagram of SCL entities showing inheritance
27 Figure 6 – UML class diagram of SCL entities showing inheritance and containment
28 5.5.2 SCL elements and CIM classes mapping
Figure 7 – UML class diagram of SCL equipment connectivity and phase information
29 Table 2 – Mapping between SCL data types and CIM classes
31 5.6 Equipment types and codes
5.6.1 General
5.6.2 Equipment type code mapping
Table 3 – Equipment type codes
33 5.6.3 Recommendation for harmonization: SCL Equipment Type codes
34 Table 4 – Equipment type codes – proposed modified descriptions
35 5.6.4 Recommendation for harmonization: SCL PSRType
Figure 8 – Composite Switch example.
Table 5 – Equipment type codes – proposed additional codes
36 5.6.5 Recommendation for harmonization: CIM BusbarSection and Junction
5.6.6 Recommendation for harmonization: CIM Fan, Motor, Batteries and charging systems
5.7 Naming and identification mapping
5.7.1 General
37 5.7.2 Naming and identification example
Table 6 – Name mapping
38 5.7.3 Recommendation for harmonization: SCL naming and identification
5.7.4 Recommendation for harmonization: CIM naming and identification:
5.8 Voltage mapping
5.8.1 General
Table 7 – Proposed CIM NameType class naming conventions
39 5.8.2 Voltage mapping example
5.8.3 Voltage level additional attributes
5.9 Connectivity modelling
5.9.1 SCL Connectivity (single line diagram) modelling
Table 8 – Base voltage mapping
40 Table 9 – Attributes for terminal
41 5.9.2 Recommendation for harmonization: SCL unconnected terminals
5.9.3 Connectivity and Terminal example
Table 10 – Attributes for ConnectivityNode
42 Figure 9 – Substation section connectivity example
44 5.9.4 Transformation of current transformer models
5.10 Phase modelling
5.10.1 General
45 Figure 10 – Three-phase (left) and single-phase control (right)
46 5.10.2 Phase mapping example
Table 11 – Comparison of IEC 61850 and CIM Phase values
Table 12 – Breaker mapping scenarios
47 Figure 11 – Unbalanced phase switching example
49 5.10.3 Recommendation for harmonization: SCL Phase modeling
5.10.4 Recommendation for harmonization: CIM SinglePhaseKind
6 Extension syntax for drawing layout coordinates
6.1 General
6.2 Recommendation for harmonization: Drawing layout syntax
50 7 Logical Node mapping
7.1 Logical Node containers
7.2 CIM Measurement associations
7.2.1 General
51 7.2.2 Recommendation for harmonization: CIM SCADA package
Figure 12 – Current CIM SCADA package
52 7.3 Logical Node classes relevant to CIM
Figure 13 – Revised SCADA package
53 Table 13 – Mapping IEC 61850 Logical Nodes to CIM classes
55 8 Measurement mapping
8.1 General
8.2 CIM Measurement Types  Logical Node and Data Object mapping
8.2.1 General
56 Table 14 – IEC 61850 DataObjects vs Current CIM measurement types
57 8.2.2 Recommendation for harmonization: CIM Measurement types
Table 15 – IEC 61850 DataObjects for non-three phase measurements
Table 16 – IEC 61850 DataObjects for CIM control types
58 8.3 Measurement associations
8.4 CSWI or XSWI/XCBR as source of switch position information
8.5 Direction of positive flow
8.5.1 General
59 8.5.2 Recommendation for harmonization: SCL power flow direction
8.5.3 Recommendation for harmonization: CIM power flow direction
8.6 CIM Extensions for Distribution – Metering Model and Reading Types
60 9 Real time data exchange mapping
9.1 Measurement identification
9.2 Common Data Class mapping
Figure 14 – Signal identification as defined in IEC 61850-7-2
61 9.3 Common Data Class mapping to IEC 60870 and CIM Measurements
Figure 15 – UML model of MV, DEL and WYE data classes
62 Table 17 – Mapping IEC 61850 Common Data Classes to IEC 60870information objects and CIM classes
64 9.4 Common Data Class mapping to IEEE1815 and CIM
9.5 Data Attribute mapping
9.5.1 General
Table 18 – Mapping IEEE1815 data point types to CIM classes
65 9.5.2 Quality flag mapping
Table 19 – Mapping IEC 61850 real time data attributes to CIM classes/attributes
66 9.5.3 Non-real time measurement attribute mapping
9.5.4 Recommendation for harmonization: CIM measurement classes
10 Control Model
10.1 CIM Control Modelling
10.1.1 General
Table 20 – Mapping IEC 61850 Non-real time data attributes to CIM classes/attributes
67 10.1.2 Recommendation for harmonization: CIM control model
Figure 16 – Current CIM Control Model
68 10.1.3 Recommendation for harmonization: CIM CONTROL TYPES
10.2 Automated control sequences
11 Protection modelling
Figure 17 – Proposal for revised CIM Control Model
69 Figure 18 – Present IEC 61970 Protection Model
70 12 Communication model
13 Settings and attributes
Table 21 – Mapping SCL Communication elements
72 Table 22 – Mapping IEC 61850 settings to CIM attributes
82 Annex A (informative)Use case details
A.1 SCADA/EMS/DMS configuration from IEC 61850 SCL  Description
A.1.1 Name of use case
A.1.2 Scope and objectives of use case
A.1.3 Narrative of use case
84 A.1.4 General remarks
A.2 Use case diagrams
85 Figure A.1 – Activity diagram part 1 – Create and review system specification description
86 Figure A.2 – Activity diagram part 2 – Create and review system configuration description
87 Figure A.3 – Sequence diagram
88 A.3 Technical details
A.3.1 Actors: People, systems, applications, databases, the power system, and other stakeholders
91 A.3.2 Preconditions, assumptions, post condition, events
A.3.3 References / Issues
92 A.3.4 Further Information on the use case for classification / mapping
A.4 Step by step analysis of use case
A.4.1 Pre-conditions
93 A.4.2 Steps – Normal
95 A.4.3 Steps – Alternative, error management, and/or maintenance/backup scenario
96 A.5 Information exchanged
A.6 Common terms and definitions
97 Annex B (informative)Use case details
B.1 Wide Area Monitoring, Protection and Control system (WAMPAC) for Transient stability
B.1.1 Name of Use Case
98 B.1.2 Scope and objectives of use case
105 B.1.3 Narrative of use case
107 B.2 Use case diagrams
108 B.3 Technical details
B.3.1 Actors: People, systems, applications, databases, the power system, and other stakeholders
109 B.3.2 Preconditions, assumptions, post condition, event
B.3.3 References / issues
110 B.3.4 Further information on the use case for classification / mapping
B.4 Step by step analysis of use case
B.4.1 Overview of scenarios
111 B.4.2 Steps – Alternative, error management, and/or maintenance/backup scenario
113 B.5 Information exchanged
117 Annex C (informative)Recommendations
C.1 Recommendations for IEC 61850
118 C.2 Recommendations for CIM based standards, particularly IEC 61970-301
119 C.3 Recommendations for joint working groups
120 Bibliography

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BSI PD IEC/TS 62361-102:2018
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