Key standards
- IEC 61850 (communication networks and systems in substations), IEEE 1588 (PTP time synchronisation), 3GPP/ETSI (5G).
Documented issues
PAC World reported results from multi-vendor interoperability tests for IEC 61850. They found that some Intelligent Electronic Devices (IEDs) lost PTP time synchronisation, which blocked protection functions during tests. The report emphasises that multi-vendor functional testing is essential and that issues require triage. pacw.org.
Typical challenges
- Integrating devices from multiple vendors can lead to interoperability and time-sync problems.
- Engineers rely on default configurations and assume devices conform fully to the standard.
- Lack of central management for firmware updates and configuration files.
Best Practice playbook
- Plan and conduct multi-vendor interoperability tests early in projects; verify GOOSE and Sampled Value messaging across all IEDs. pacw.org.
- Ensure reliable time synchronization (IEEE 1588/PTP) across devices; monitor for sync loss and configure fallback states.
- Manage firmware and configuration files centrally; avoid mismatched versions.
- Use conformance certificates and test reports from independent labs; update procurement specifications to require them.
- Provide training on IEC 61850 engineering and commissioning; involve vendor experts.
References
- PAC World article detailing IEC 61850 interoperability test findings (IED time-sync loss and blocked protection functions). pacw.org.
