Overview
IEC TR 62746-2:2015 defines use cases and requirements for the systems interface between a Customer Energy Management System (CEM/CEMS) and the Power Management System (PMS) of the grid. Part 2 of the IEC TR 62746 series focuses on interoperability pillars that help technical committees, utilities and vendors specify interfaces and messages covering the chain between a smart grid and smart homes, buildings and industrial areas. The report describes a logical architecture model, user stories, detailed use cases and the communication and message requirements identified in those use cases.
Key topics and technical requirements
- Architecture model (logical): common functional architecture and interface mapping for consistent CEM ↔ PMS integration. References Smart Grid Coordination Group models (SG‑CG).
- Smart Grid Connection Point (SG CP): definition, scope and functional requirements for the interface at the premises boundary.
- User stories and use cases: an extensive catalogue (e.g., flexible start appliances, EV charging, battery aggregation, tariff synchronization, DER integration, disaster/emergency scenarios) used to derive requirements.
- Communication requirements: messaging flows, sequence diagrams and requirements for reliable exchange between actors.
- Information and message requirements: identified data elements and message types required for demand response, energy flexibility, price signals, power/temperature profiles, load/generation management and status/comfort information.
- Profiles and templates: power profiles, price profiles, load/generation and temperature profiles used to standardize exchanged information.
- Interoperability requirements: functional and messaging requirements to enable neutral interfaces and multi‑vendor systems.
Practical applications
IEC TR 62746-2:2015 is practical for:
- Designing and specifying CEM ↔ PMS interfaces for utilities, DER aggregators and grid operators.
- Developing interoperable CEM, smart appliances, EMS and building energy management solutions.
- Defining message requirements for demand response (DR), energy flexibility services and tariff‑based control.
- Creating test scenarios and validation plans based on the provided use cases and sequence diagrams.
- Informing procurement, RFPs and system integration projects that require standardized information exchange.
Who should use this standard
- Standards developers and technical committees
- Grid operators, DSOs and utilities
- CEM/EMS vendors, appliance manufacturers and software architects
- System integrators, DER aggregators and building/facility managers
- Test houses and certification bodies working on smart grid interoperability
Related references
- Part of the IEC 62746 TR series (this is Part 2) and references Smart Grid Coordination Group architecture material (SG‑CG / M490) to align functional models and interface mapping.
Keywords: IEC TR 62746-2:2015, systems interface, customer energy management system, power management system, smart grid, use cases, interoperability, SG CP, demand side management, energy flexibility.