Overview
IEC TR 61850-90-8:2016 provides an object model that links the IEC 61850 power-utility automation data model (notably IEC 61850-7-420) with E‑Mobility domain standards (IEC 62196, IEC 61851, ISO/IEC 15118). The Technical Report shows how to model Electric Vehicles (EVs), Electric Vehicle Supply Equipment (EVSE), charging outlets and power-system interfaces to achieve a high level of safety, interoperability, and consistent information exchange between the grid and charging infrastructure.
Key topics and technical requirements
- Object model mapping: Guidance for mapping EV/EVSE domain information (AC and DC) into the IEC 61850 information model, including mappings for IEC 61851 (AC), IEC 61851-23/24 (DC), and ISO 15118 (V2G).
- Logical Nodes (normative definitions in Annex C): New and existing IEC 61850 Logical Nodes tailored to E‑Mobility, for example:
- DESE – E‑Mobility supply equipment
- DEAO – E‑Mobility AC charging outlet
- DEDO – E‑Mobility DC charging outlet
- DEEV – E‑Mobility Electric Vehicle
- ZCAB – Power cable
- FSCH – Schedule (charge scheduling)
- Use cases & functional scenarios: Identification (ID), charging status and control (use cases E2 & E3), AC/DC charging workflows, and charge-schedule exchange.
- Data objects and signals: Standardized objects for plug presence, outlet charging current and power rating, charging cable and supply-cable characteristics, PWM signalling, EV/EVSE identification and nameplate, State of Charge (SoC), fault reporting (isolation, short-circuit, welding), and loss of digital communication.
- Charge scheduling and control: Common information model for charge schedules, schedule states, interval types and examples for EVSE with one outlet.
- Architectural guidance: Implementation concepts showing mapping options (e.g., dedicated or centralized SECC), and practical mapping examples for System A and System C DC charging.
Practical applications and who uses this standard
- Utilities and grid operators integrating EV loads into distribution automation and DER management systems.
- EVSE manufacturers and charging-station integrators implementing IEC 61850-compliant information models for interoperability with energy management systems.
- Software developers and system integrators building charge‑scheduling, monitoring and control platforms that bridge ISO 15118 and IEC 61850.
- Test labs, certification bodies and standards developers aligning EV/EVSE products with power-system communication models.
Related standards (mentioned)
- IEC 61850-7-420 (DER/Energy resources model)
- IEC 62196 (plugs and connectors)
- IEC 61851 (conductive charging)
- IEC 61851-23/24 (DC charging system variants)
- ISO/IEC 15118 (vehicle-to-grid communication interface)
This TR is essential for stakeholders aiming to enable standardized, secure communication between EVs, chargers and power systems using the IEC 61850 framework.