IEC SRD 62913-1:2022

IEC SRD 62913-1 ®
Edition 2.0 2022-08
SYSTEMS
REFERENCE DELIVERABLE
colour
inside
Generic smart grid requirements –
Part 1: Specific application of the use case methodology for defining generic
smart grid requirements according to the IEC systems approach
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IEC SRD 62913-1 ®
Edition 2.0 2022-08
SYSTEMS
REFERENCE DELIVERABLE
colour
inside
Generic smart grid requirements –

Part 1: Specific application of the use case methodology for defining generic

smart grid requirements according to the IEC systems approach

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020; 29.240 ISBN 978-2-8322-4434-0

– 2 – IEC SRD 62913-1:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 12
4 Systems approach . 13
4.1 A systems perspective . 13
4.2 Applying the IEC systems approach to smart energy . 13
4.3 Main areas of work. 15
4.4 Breaking down the scope . 16
4.5 Link with some existing conceptual models . 16
5 Specific application of use case methodology for defining generic smart grid
requirements . 17
5.1 General . 17
5.2 Why the use case methodology is particularly adapted to smart grid . 17
5.2.1 General . 17
5.2.2 Linking the use case methodology with existing frameworks . 18
5.2.3 Notion of role . 21
5.3 Applying the use case methodology to define generic smart grid
requirements . 22
5.3.1 A customer-centric and business-processes-driven approach . 22
5.3.2 Generic smart grid requirements . 26
5.4 Approach used to elaborate a consolidated smart grid role model . 30
6 UML profile for modelling smart grid use cases . 31
6.1 A formal approach of use cases modelling . 31
6.1.1 General . 31
6.1.2 Key principles . 31
6.2 UML-driven top-down approach methodology . 32
6.2.1 Formalism and objectives . 32
6.2.2 Modelling language. 32
6.2.3 Scope and information type classification: diagrams and main elements . 33
6.2.4 Key benefits . 34
6.2.5 Types of diagrams and views . 36
6.3 IEC use cases UML profile concepts . 38
7 UML modelling diagrams . 40
Annex A (informative) Existing Actors Lists . 44
Annex B (informative) Content of the use case mapped on IEC 62559-2 template . 45
B.1 Description of the use case . 45
B.1.1 Name of use case . 45
B.1.2 Version management . 45
B.1.3 Scope and objectives of use case . 45
B.1.4 Narrative of use case . 45
B.1.5 Key performance indicators (KPI) . 46
B.1.6 Use case conditions. 46

B.1.7 Further information to the use case for classification / mapping . 46
B.1.8 General remarks . 46
B.2 Diagrams of use case . 46
B.3 Technical details . 47
B.3.1 Actors . 47
B.3.2 References . 47
B.4 Step by step analysis of use case . 47
B.4.1 Overview of scenarios . 47
B.4.2 Steps of scenarios . 48
B.5 Information exchanged . 48
B.6 Requirements (optional) . 48
B.7 Common terms and definitions . 48
B.8 Custom information (optional) . 49
B.9 IEC 62559-2 UML Modelling . 49
Annex C (informative) Example of telecommunications related non-functional
requirements . 51
Annex D (informative) Existing Smart Grid Conceptual Models . 52
Bibliography . 54

Figure 1 – The GridWise Architecture Council's model (NIST, 2012) . 18
Figure 2 – Simplification of the GWAC model (CEN-CENELEC-ETSI, 2014) . 19
Figure 3 – Smart grid plane domains and hierarchical zones . 19
Figure 4 – The Smart Grid Architecture Model (CEN-CENELEC-ETSI, 2014) . 20
Figure 5 – Interactions between the use case methodology and the Smart Grid
Architecture Model (based on CEN-CENELEC-ETSI, 2014) . 21
Figure 6 – Defining smart grid requirements methodology . 23
Figure 7 – Point of view of a domain role . 24
Figure 8 – The first two levels of detail used to capture generic smart grid
requirements . 25
Figure 9 – The three levels of detail used to capture generic smart grid requirements . 26
Figure 10 – Generic smart grid functional requirements and non-functional
requirements captured in use cases . 28
Figure 11 – Example of representation of a domain's role model . 30
Figure 12 – Example of representation of relations between roles . 31
Figure 13 – Four-layer model architecture . 33
Figure 14 – UML use case profile for the IEC SRD 62913 series aligned with the
IEC 62559 series . 36
Figure 15 – Use case overview diagram . 37
Figure 16 – Domain overview diagram . 37
Figure 17 – BUC-SUC relations diagram . 38
Figure 18 – Mapping between use case concepts and architecture concepts . 40
Figure 19 – Domain overview concepts UML model . 41
Figure 20 – Use case overview concepts UML model . 41
Figure 21 – Scenario overview concepts UML model . 42
Figure 22 – Activity overview concepts UML model . 43
Figure 23 – Requirement overview concepts UML model . 43

– 4 – IEC SRD 62913-1:2022 © IEC 2022
Figure C.1 – Use case mapping to IEC 62559-2 . 49
Figure C.2 – Use case mapping to IEC 62559-2 – Scenario and activities . 50
Figure D.1 – NIST/SGIP Smart Grid Conceptual Model . 52
Figure D.2 – M490 domains . 53

Table 1 – Differences between business use cases and system use cases . 12
Table 2 – Links between SGAM and IEC SRD 62913 series domains. 17
Table 3 – Use cases concepts . 39
Table C.1 – Example of telecommunications related non-functional requirem
...