IEC TR 61850-10-3:2022

Overview - IEC TR 61850-10-3:2022 (Functional testing of IEC 61850 systems)

IEC TR 61850-10-3:2022 provides practical guidance for functional testing of IEC 61850 systems in substations. It complements the quality assurance stages defined in IEC 61850-4:2011 by focusing on end‑user requirement fulfilment rather than IED manufacturer development. The report describes a methodical approach for verification and validation (V&V), use of IEC 61850 resources (Edition 2.1) for testing, recommended practices for common use cases, and processes for testing using communication-based interfaces (e.g., GOOSE and Sampled Values (SV)) instead of traditional hard‑wired connections.

Key Topics and Technical Requirements

• Verification & Validation approach: A structured V&V workflow for substation solutions, aligned with the V‑Model (unit → integration → system testing).
• Testing-related IEC 61850 features: Use of mode/behavior attributes, logical device hierarchy, data processing rules, blocking and substitution mechanisms, and referencing (InRef/GrRef) to support simulation and test injection.
• Test methods and practices: Unit testing, subsystem/interface testing, system (end‑to‑end) testing, and site acceptance test (SAT) sequences tailored to IEC 61850 systems.
• Use cases and sequences: Detailed examples including breaker failure protection and Select Before Operate (SBO) schemes, with recommended test sequences and interface definitions.
• Communication-based testing: Testing IEDs and protection/control schemes using GOOSE and SV messages in place of hardwired signals.
• Modeling, engineering and test-system design: Object modelling of test devices, engineering of simulators, and considerations for test system impact on substation LAN traffic.
• Functional and cyber security considerations: Guidance on secure testing practice and remote testing architectures.
• Scope limitation: Applicable to substation domain; conformance testing per IEC 61850-10 and abstract device-independent testing methodologies are outside scope.

Practical Applications - Who Uses IEC TR 61850-10-3

• Power utility protection & control engineers performing acceptance testing and commissioning of IEC 61850 substations.
• System integrators coordinating site acceptance tests and end‑to‑end verification of protection schemes.
• Test engineers and lab teams developing test plans, simulators, and automation for IEC 61850 functional tests.
• Asset owners and operators adopting IEC 61850 who need to validate that delivered systems meet functional requirements.
• Vendors and integrators implementing test features in IEDs or test equipment to support realistic simulation and SAT.

Related Standards

• IEC 61850 family (notably IEC 61850‑4:2011 for QA stages, IEC 61850‑7‑1, IEC 61850‑7‑4 for modelling)
• IEC 61850‑10 (conformance testing - outside this TR’s scope)
• IEC 81346 (single line diagram conventions referenced)

This technical report is a practical reference for implementing robust, communication‑based functional testing of IEC 61850 substations, improving reliability and reducing commissioning risk. Keywords: IEC TR 61850-10-3, IEC 61850, functional testing, substation testing, GOOSE, SV, IED testing, protection and control.