Commissioning Engineer V Substation

Position: Commissioning Engineer – 275kV Substation
Location: Scotland

Rubicon Consulting is currently recruiting for Commissioning Engineer on a 4 Month Contract, based in Scotland.

Role Summary

We are seeking an experienced Commissioning Engineer to support the delivery and energisation of a 275kV substation project. The successful candidate will be responsible for the testing, commissioning, and handover of high-voltage plant and protection systems, ensuring compliance with National Grid/SSE/UKPN and project-specific technical standards.

Key Responsibilities

* Lead and execute commissioning activities on 275kV AIS/GIS substations in accordance with approved commissioning procedures and safety rules.

* Carry out testing and commissioning of HV switch gear and circuit breakers (SF6, vacuum, GIS/AIS) including timing tests, contact resistance, functional checks, and interlocking verification.

* Perform commissioning of power transformers (275kV/132kV or 275kV/33kV) including pre-energisation checks, ratio testing, vector group verification, winding resistance, and protection scheme validation.

* Conduct primary and secondary injection testing, CT/VT testing (mag curves, polarity, burden), and full protection scheme functional testing.

* Commission and configure Protection & Control systems including distance, differential, overcurrent, earth fault, , busbar protection, and intertripping schemes.

* Test and validate control panels, marshalling kiosks, SCADA interfaces, alarms, and remote signalling systems.

* Support energisation activities, fault-finding, and resolution of commissioning defects.

* Review drawings, protection settings, schematics, and commissioning documentation.

* Produce detailed commissioning reports, red-line drawings, and handover documentation.

* Ensure strict compliance with CDM regulations, safety rules, and HV authorisation procedures.

Requirements

* Proven experience commissioning 275kV transmission substations.

* SSE CAT 3 Authorisation (Essential)

* Strong working knowledge of AIS and/or GIS switch gear systems.

* Hands-on experience commissioning power transformers at transmission voltage levels.

* Extensive experience in Protection & Control commissioning, including relay testing

* Competent in primary and secondary injection testing using Omicron or similar test equipment.

* Ability to interpret SLDs, schematic diagrams, wiring diagrams, and protection logic drawings.

* HV Authorisation (e.g., National Grid, SSE, or DNO equivalent) preferred.

* Strong fault-finding and problem-solving skills in live substation environments.

Our Company

Rubicon Consulting is a Talent management consultancy which helps you to optimise business performance and competitive advantage by choosing the right people first time