IEC 62559-2:2015

IEC 62559-2:2015 Use Case Methodology – Templates for Use Cases, Actor and Requirements Lists

Overview

IEC 62559-2:2015 is an international standard developed by the International Electrotechnical Commission (IEC) that defines structured templates for use cases, actor lists, and requirements lists. This standard is part two in the IEC 62559 series focused on use case methodology and provides a fundamental framework to support standardization processes, system development projects, and cross-domain collaborations.

Initially applied in the energy system and smart grid sectors, the methodology established in IEC 62559-2 is domain-agnostic and adaptable for other complex systems such as smart homes and electro-mobility. The document aims to promote transparency, consistency, and clarity in describing use cases by standardizing documentation templates and their interrelations.

Key Topics

• Use Case Template Structure IEC 62559-2 defines a detailed template for capturing use case information, facilitating the description of functionalities, actors, and processes. Both short and extended template versions are specified to accommodate different levels of detail as needed.

• Actor List Definition The standard outlines a formal structure for listing actors involved in use cases. Actors can be human users, devices, or systems that interact with the system under development, emphasizing a clear identification to support traceability.

• Requirements List Structure A corresponding template for cataloging detailed requirements linked to use cases and actors is included, enhancing the traceability of needs through to design and implementation phases.

• Interrelation of Templates IEC 62559-2 establishes how use case templates, actor lists, and requirements lists connect with one another, supporting cohesive documentation and analysis within and across projects.

• Use Case Repository Considerations While IEC 62559-2 defines template structures, it complements part 3 of the series (IEC 62559-3), which addresses their digital serialization and use in repositories for collaborative standardization and development environments.

• Practical Examples The standard provides examples based on fault location and system restoration in smart grids, illustrating both short and detailed template applications.

Applications

• Standardization Organizations IEC 62559-2 facilitates harmonized use case documentation across multiple technical committees, enhancing cooperation and reducing ambiguities in standards development.

• System Development Projects The structured templates support requirement gathering, functional analysis, and system design in projects involving complex and interconnected systems.

• Smart Grid and Energy Systems Originally derived from smart grid use cases, this methodology assists in managing technical complexity and cross-domain collaboration within energy systems.

• Cross-Domain Adaptability Beyond energy systems, the templates are applicable to smart homes, electro-mobility, and other emerging fields requiring clear functional and requirement specifications.

• Multi-Expert Collaboration Enables domain experts, system architects, IT specialists, and safety professionals to collaborate efficiently by using consistent terminology and documentation formats.

Related Standards

• IEC 62559-1: Use Case Methodology – Concept and Processes Provides the foundational background, concepts, and recommended processes for use case description within standardization activities.

• IEC 62559-3: Use Case Template XML Format Defines an XML schema to serialize use case templates, enabling integration with UML tools and collaborative repositories.

• IEC 62559-4: Use Case Methodology – Extended Content Continues development of use case methodology content, evolving from earlier published IEC PAS 62559:2008 material.

• ISO/IEC Directives, Part 2 Outlines the procedural context in which IEC standards like 62559-2 are developed and maintained.

Benefits of IEC 62559-2:2015

• Standardizes use case documentation to improve clarity and reuse
• Supports interoperability and cross-domain understanding among diverse stakeholders
• Enables systematic requirement traceability from business needs to technical implementation
• Promotes collaboration through common templates and terminology
• Adaptable to various industries and evolving technological landscapes

Keywords: IEC 62559-2, use case methodology, use case templates, actor list, requirements list, smart grid, energy systems, system development, standardization, IEC standards, IEC 62559 series, system requirements, functional analysis, smart home, electro-mobility.