Manager Testing & Commissioning Wind Turbine Specialist

About the Role

Larsen & Toubro is seeking a Manager - Testing & Commissioning - Wind Turbine Specialist to join their team in Riyadh. This full-time position is responsible for the planning, execution, coordination, and technical assurance of commissioning activities for Wind Turbine Generators (WTGs) in utility-scale wind power projects. The role ensures that mechanical, electrical, control, protection, and grid-interface systems of WTGs are commissioned safely, operate reliably, and fully comply with OEM requirements, statutory regulations, and grid codes prior to handover.

Key Responsibilities

• Review and provide inputs to the engineering team regarding grid compliance, WTG controller limits, and machine-specific challenges.
• Participate in FAT review of WTG control and protection systems where applicable.
• Develop WTG commissioning procedures, method statements, and risk assessments.
• Coordinate commissioning sequence planning with EPC, OEM, and grid operator.
• Supervise and verify the correct completion of mechanical erection, torquing, alignment, lubrication, and electrical installation (LV, MV, transformers, grounding systems).
• Ensure readiness of auxiliary systems including pitch and yaw drives, hydraulic and lubrication systems, and emergency/service power supplies.
• Lead pre-energization checks such as insulation resistance tests, grounding continuity, phase sequence, and voltage checks.
• Coordinate transformer energization and LV/MV energization, executing first grid synchronization and progressive power ramp-up.
• Ensure safety compliance during live tests and rotating machinery operation.
• Validate WTG controller parameters as per grid code and PPC philosophy.
• Coordinate LVRT / HVRT, frequency ride-through, and reactive capability tests.
• Verify pitch-based power regulation and ramp-rate control, confirming correct response to curtailment, trip, and fault conditions.
• Support trial run, availability tests, and performance acceptance.
• Review SCADA data, alarms, and event logs.
• Close commissioning punch points and support COD documentation.
• Conduct knowledge transfer and basic training for O&M teams.

Testing and Commissioning Standards

The role is responsible for commissioning and grid-compliance testing of wind turbine generators as per IEC 61400-1, IEC 61400-21-1, IEC 61400-25, IEC 61400-27-1, IEC 60204-1, UL 6141, and other relevant standards.

Key Commissioning Tests

• Insulation & dielectric testing of generators and transformers.
• Protection relay testing (OV/UV, OF/UF, differential, earth fault).
• Functional testing of pitch, yaw, mechanical brake, emergency stops, and fail-safe systems.
• Power curve and performance checks.
• Communication tests with plant SCADA and PPC.

Troubleshooting Scope

• Grid-related trips (voltage/frequency instability).
• Pitch or yaw control faults.
• Excessive vibration or temperature alarms.
• Transformer or converter faults.
• Communication failures between WTG and PPC.

Qualifications and Experience

• A minimum of 10 years of relevant experience is required for this position.