Overview
IEC SRD 63460:2025 defines architectures and practical use cases for Electric Vehicles (EVs) acting as Distributed Energy Resources (DER) when connected via a charging station. While acknowledging that the main purpose of EV interconnection is battery charging, the document assesses how EVs can provide grid support functions (active/reactive power control, volt-watt, frequency response, ride-through, peak limiting, coordinated charge/discharge, V2G/V2H) and when those functions may be mandated or incentivized. SRD 63460 maps EV roles, system architectures and interfaces to existing grid-function models such as IEC 61850-7-420, IEEE 1547:2018 and EN 50549, and provides structured use-case narratives, sequence diagrams and business-case analysis.
Key Topics
- EV-as-DER architecture: conceptual system views showing EVs, charging stations, aggregators, DSOs and transmission operators within the DER environment.
- DER functions applicable to EVs: list and descriptions of grid support capabilities (volt-watt, watt-var, frequency-watt, synthetic inertia, limit active power import/export, ride-through).
- Use cases and business cases: detailed operational examples (e.g., peak power limiting, coordinated charging/discharging, V2G, frequency response) with scenarios and interaction flows.
- Communication and information models: mapping of EV roles and interfaces to standards-based models (IEC 61850 family, SGAM concepts) and protocols relevant to e‑mobility.
- Architectures survey: review of historical and current EV system architectures and standards landscapes (IEC 63110, IEC TR 61850‑90‑8, IEC SRD 63268, ISO 15118, OCPP).
- Testing, gaps and next steps: identification of gaps in standards, testing needs for EV-as-DER, and recommendations for future work.
Applications - Who Uses This Standard
- Utilities and Transmission Operators: to design grid services using EV fleets for balancing, frequency response and voltage support.
- Distribution System Operators (DSOs): for distribution-level use cases such as congestion management, peak shaving and local voltage control.
- Aggregators and Market Operators: to define service offerings, market interfaces and contract requirements for aggregated EV capacity.
- EV OEMs and Charging-Station Manufacturers: to align product architectures and communication interfaces to provide compliant DER functions.
- Standards developers, testing labs and policymakers: to identify gaps, testing needs and regulatory implications of mandated or incentivized EV grid services.
Related Standards
- IEC 61850-7-420 (DER information models)
- IEEE 1547:2018 (interconnection and interoperability of DER)
- EN 50549 (requirements for generation connected to distribution networks)
- IEC 63110, ISO 15118, OCPP, IEC TR 61850‑90‑8, and other IEC e‑mobility references cited in SRD 63460.
Keywords: EV-as-DER, vehicle-to-grid, V2G, V2H, charging station, grid support functions, IEC 63460, DER architecture, volt-watt, frequency response.