Testing & Commissioning Engineer (Subsbtation/Transformer/Relay)

Job Location: Saudi Arabia

Job Title: Testing & Commissioning Engineer HV / EHV Substations

(Substation Maintenance Engineers with strong testing exposure are encouraged to apply)

Job Purpose:

To lead and execute testing and commissioning activities for HV/EHV substations (220 kV /

380 kV / 400 kV), covering primary yard equipment, secondary protection & control systems,

substation automation, and grid interface, ensuring safe energization in compliance with

utility standards, IEC/IEEE codes, and project specifications.

The role requires strong hands-on site experience across complete substation systems, not limited to individual equipment.

Key Responsibilities

1) HV / EHV Substation Testing & Commissioning

Execute and lead testing activities across complete substation installations, including:

Primary Equipment (HV / EHV Yard & Switchgear)

AIS / GIS systems at 220 kV, 380 kV, and 400 kV, HV/EHV Circuit breakers, isolators, earthing switches CTs and VTs (ratio, polarity, burden, functional checks)

Busbars, feeders, earthing systems etc

Power transformers (testing limited to integration, protection interface, and

energization readiness)

Ensure correct phasing, interlocking, clearances, earthing continuity, and readiness for

first energization of the HV/EHV substation.

2) EHV Protection, Control & Secondary Systems

Testing and commissioning of EHV protection and control schemes, including:

Distance protection (multiple zones)

Line differential protection (PLCC / fiber-based)

Transformer differential protection

Busbar protection schemes

Overcurrent and earth fault protection

Bay control units (BCU) and control panels

Perform:

Primary and secondary injection testing

End-to-end protection testing

Trip circuit supervision and interlocking verification

Relay setting verification and coordination

Experience with ABB, Siemens, GE, Schneider, SEL or equivalent EHV protection platforms

is mandatory.

3) Substation Automation, SCADA & Communication

Commissioning of EHV substation automation systems (SAS)

SCADA, RTU, and bay-level communication testing

Signal validation between yard, control room, and remote control centers

Time synchronization (GPS/IRIG-B, SNTP)

Event, disturbance recorder, and SOE verification

4) Energization & Grid Interface (Critical Scope)

Lead and support EHV energization activities in coordination with grid authorities

Prepare energization sequences, checklists, and safety clearances

Coordinate live-grid switching, shutdowns, and re-energization

Troubleshoot protection trips, alarms, and communication issues during first

energization and trial operation

5) Supervision & Stakeholder Coordination

Lead teams of commissioning engineers and technicians

Coordinate with:

EPC engineering teams

OEM specialists

Utility / transmission operator representatives

Consultants and third-party inspectors

Participate in technical, energization, and HSE meetings

Support utility inspections and final handover activities

6) Documentation & Commissioning Deliverables

Prepare and review:

EHV-specific method statements and risk assessments

Commissioning and energization procedures Compile Detailed EHV test reports

Punch lists and clearance certificates

Final commissioning and energization dossiers

Support red-line and as-built documentation

7) Compliance, Quality & Safety

Ensure compliance with:

IEC, IEEE, NEC standards

Transmission utility specifications

Enforce strict EHV safety and permit-to-work systems

Promote safe working practices during live-grid operations

Candidate Profile Mandatory

Bachelors Degree in Electrical Engineering

Minimum 5+ years of experience in EHV (220 kV / 380 kV / 400 kV) substation

testing & commissioning.

Proven handson experience with HV/EHV protection schemes and grid energization

Strong understanding of transmission-level substations and live-grid environments

Familiarity with IEC standards and utility procedures

Preferred / Added Advantage

Experience working directly with transmission utilities or major EPC contractors

Prior involvement in first energization of EHV substations or transmission bays

Electrical safety / commissioning certifications (NEBOSH or equivalent)

Experience in OHTLsubstation interface commissioning

Note: This role is not suitable for LV/MV-only or plant based engineers.

Candidates must have direct experience of T&C as an engineer on 220 kV and above HV/EHV substations.