WG 5 - SyC Smart Energy/WG 5

IEC SRD 62559-4:2020 specifies best practices for an entity to engage in a use cases redaction process to determine and describe their user requirements for systems, based on the business needs. It complements the information in IEC TR 62559-1, IEC 62559-2 and IEC 62559-3 by providing users with best practices in:
- use cases drafting process,
- determining the skill sets of the people required,
- use case repository management, and
- using use cases for IEC or enterprise projects.

IEC TR 62559-1:2019, which is a Technical Report, is the basis for a common use case repository, used to gather use cases within IEC on a common collaborative platform. The repository is used to organize and harmonize use cases in order to provide broadly accepted generic use cases as basis for the further standardization work.
This document gives an overview about the individual parts of the IEC 62559 series, provides the background/basics for the use case approach defined therein (like terms or use case types), and introduces processes for collaborative use case collection within IEC.
Operational documents like user manuals for software tools like the use case repository are not described in detail as they will be available online and might as well be frequently updated. This first edition, together with the other parts of the IEC TR 62559 series as described in the Introduction, cancels and replaces IEC PAS 62559 published in 2008.
This edition constitutes a technical revision.

IEC 62559-3:2017 defines the core concepts and their serialization into XML syntactic format of a use case template, an Actor list and list for detailed requirements This provides a common XML format for importing/exporting use case information between a variety of modelling software and repositories.
For complex systems, the use case methodology supports a common understanding of functionalities, Actors and processes across different technical committees or even different organizations. Developed as software engineering tool, the methodology can be used to support the development of standards as it facilitates the analysis of requirements in relation to new or existing standards. Further arguments for the use case methodology and background information are available in IEC 62559-1.
This part of IEC 62559 establishes the interfaces between the different use case repositories and/or UML engineering software tools. Once this level of interoperability is achieved, IEC 62559 can provide a reliable mechanism to interpret those XML data in order to represent graphically UML use cases.

IEC 62559-2:2015 defines the structure of a use case template, template lists for actors and requirements, as well as their relation to each other. In this document, a standardized template for the description of use cases is defined for various purposes like the use in standardization organizations for standards development or within development projects for system development. This document was developed for general application in various domains and systems. The energy system/smart grid is used as example in this document as it was one of the first usage areas for this use case template, but this general template can be applied in other usage areas different from energy systems as well (e.g. smart home or electro-mobility). The motivation, background information on use cases, recommendations for the handling of use cases and the processes for the description of use cases inside standardization and in relation to a central use case repository is described in IEC 62559-1. This first edition cancels and replaces IEC PAS 62559:2008 which had been published together with EPRI. Main content of the former PAS will be transferred to the new IEC 62559-4.