IEC 61400-25-3:2015

Overview

IEC 61400-25-3:2015 - part of the IEC 61400-25 series for wind turbines - defines the information exchange models and the Abstract Communication Service Interface (ACSI) used for communications between clients and servers in wind power plants. The standard covers the abstract services and data models for data access and retrieval, device control, event reporting and logging, device self‑description (device data dictionary), and data typing and discovery. It is protocol‑agnostic; mapping to specific communication stacks is handled in IEC 61400-25-4.

Key topics

• Abstract Communication Service Interface (ACSI): client–server service model for monitoring and control.
• Data access and retrieval: standardized methods for querying measurements, status and configuration.
• Device control models: control flows including Select‑Before‑Operate (SBO), time‑activated operate and security levels (normal/enhanced).
• Reporting and logging: models for event reporting, buffered and unbuffered reports, and log control blocks.
• Self‑description and data typing: device data dictionaries and discovery mechanisms to support interoperability.
• Management functions: user/access management, setup, time synchronization and diagnostic (self‑monitoring) models.
• Conformance and testability: ACSI conformance statements are provided (Annex D) for client and server implementations.
• Harmonization: editorial and technical alignment with newer editions of IEC 61850 to reduce overlap and simplify referencing.

Practical applications

IEC 61400-25-3:2015 is used to:

• Enable interoperability between wind turbine OEM equipment, SCADA systems and plant controllers.
• Define the abstract services required when designing communication interfaces for wind power plant monitoring and control.
• Support implementation of standardized reporting and logging for alarms, events and historical diagnostics.
• Provide a basis for testing and conformance (via the conformance statements) in vendor and integration testing.
• Guide system integrators and network engineers on data typing, discovery and device self‑description to simplify commissioning and lifecycle management.

Who uses this standard

• Wind farm operators and asset managers
• Turbine OEMs and control-system vendors
• SCADA, EMS and plant controller developers
• System integrators, test laboratories and certification bodies
• Network and OT security engineers working on turbine communications

Related standards

• IEC 61400-25 series (other parts covering mappings, info models and communication profiles)
• IEC 61400-25-4 (mapping the abstract models to specific communication stacks)
• IEC 61850 (service models and harmonization reference)

Keywords: IEC 61400-25-3:2015, wind turbines, information exchange models, ACSI, monitoring and control, device data dictionary, reporting and logging, IEC 61850.