Substation Senior Electrical Expert

About the role

The Senior Electrical Expert will lead the technical design, specification and performance assessment of high‑voltage/middle‑voltage (HV/MV) substation equipment for utility‑scale solar PV and battery energy storage system (BESS) projects in Eritrea. Acting as the technical authority, you will ensure equipment reliability, safety, grid‑code compliance and seamless integration with the power system.

Key responsibilities

• Review and approve substation designs, single‑line diagrams, equipment layouts and technical specifications.
• Select and specify circuit breakers, disconnectors, earthing switches, surge arresters, instrument transformers, insulators, bushings, cables, terminations and earthing components.
• Validate equipment ratings (voltage, current, insulation, short‑circuit, seismic, environmental).
• Conduct or review load‑flow, short‑circuit, voltage‑stability, harmonic, power‑quality, over‑voltage and contingency studies.
• Support grid‑impact and interconnection studies, equipment‑rating verification and reinforcement assessments.
• Review protection philosophies, relay settings, coordination studies and anti‑islanding protection.
• Ensure coordination with protection, control, SCADA and remote‑monitoring systems.
• Develop and witness Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) for critical equipment.
• Investigate equipment failures, conduct root‑cause analysis and recommend corrective actions.

Required profile

• Senior‑level professional with extensive experience in HV/MV substation design for utility‑scale solar PV and BESS projects.
• Proven ability to review and approve detailed engineering documentation and perform complex electrical studies.
• Strong background in grid‑code compliance, equipment reliability and failure investigation.

Required skills

• HV/MV substation design
• Circuit breakers and disconnectors
• Earthing switches and surge arresters
• Instrument transformers, insulators, bushings
• Cables, terminations and earthing systems
• Load‑flow, short‑circuit and voltage‑stability analysis
• Harmonic, power‑quality and over‑voltage studies
• Protection coordination and relay setting expertise
• SCADA and remote‑monitoring integration
• Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT)