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IEC 61850 Engineering

IEC 61850 replaces copper between panels with a station bus, which changes how a scheme is engineered, tested and fault-found. We work in it daily — both on new digital substations and on the harder problem of migrating a running hardwired installation without losing protection coverage.

What this covers

  • System architecture — station bus and process bus topology, redundancy (PRP and HSR), and where a digital scheme is and is not the right answer.
  • Data model design — logical devices, logical nodes, data objects and datasets structured so the system is maintainable by the next engineer.
  • SCL engineering — ICD, IID, SCD and CID files and the configuration workflow that keeps them consistent.
  • GOOSE scheme design — publisher and subscriber mapping, dataset definition, transmission timing and subscription supervision.
  • Sampled values — merging unit integration and the timing and synchronisation requirements that come with it.
  • Multi-vendor interoperability — conformance checking and resolving the mismatches that appear when relays from different manufacturers share a bus.
  • Migration from hardwired — staged conversion of an in-service installation, running both signalling methods in parallel through the transition.
  • Testing — GOOSE trip verification, subscription loss behaviour and end-to-end scheme proving.

What you receive

  • System architecture drawing and network topology
  • SCD file and per-device configuration files
  • GOOSE mapping tables and dataset definitions
  • Interoperability and conformance assessment
  • Commissioning and test procedures specific to the station bus

Standards and references

Work is carried out to the IEC 61850 series — including 61850-6 for SCL, 61850-7 for the data model and 61850-8-1 and 9-2 for GOOSE and sampled values — alongside IEC 60255 for the relays themselves.

Related services

Substation Automation

The control, monitoring and interlocking layer that makes a substation operable.

Power System Design

Network topology, substation configuration and equipment rating for HV and MV systems.

Electrical System Design

Plant-level electrical design, from load schedule through to panel schematics.

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