Protection Commissioning Engineer

Role Overview
The Protection Commissioning Engineer supports project-based works, portfolios of projects, and ad-hoc repairs, ensuring the commissioning and integration of protection, control, and SCADA systems across all distribution asset classes (overhead lines, underground cables, substations, civil works, and work programmes). The role involves undertaking all aspects of commissioning activities to ensure assets are fit for purpose and meet regulatory and customer obligations.

Key Responsibilities

• Perform pre-commissioning inspection prior to off-load commissioning tests.
• Check detailed schematics against connections, protection, and tripping logic diagrams.
• Attend Factory Acceptance Testing and project-specific meetings as required.
• Conduct off-load commissioning checks, including:
• Witness testing of primary substation plant (circuit breakers, switches/disconnectors, transformers, voltage and current transformers).
• Insulation resistance, primary and secondary injection tests.
• Circuit logic tests against DC schematic diagrams.
• Testing integral relay logic.
• Protection relay checks (distance relays, feeder differential, transformer differential, frequency, G99 type, high impedance busbar, blocked busbar protection).
• Auto-reclose scheme checks.
• Intertripping and signalling equipment checks.
• Testing integration of protection systems with control and SCADA using DNP3 and IEC61850 protocols.
• Testing and proving relay programmable logic files, relay setting files, and DNP3 communication files.
• Interface with customers, internal and external resources.
• Complete all work in line with company objectives (time, cost, quality).
• Accurately record all time spent on projects and provide timely reports on progress and status.
• Provide guidance and support to other members of the Protection Commissioning Team.
• Use and update company data and information systems, including comprehensive commissioning records and on-site fault/defect investigations.
• Undertake duties under the CDM Regulations as Designer and/or Contractor.