Senior HV/EHV P&C Design Engineer – Substations

OCU Group; Harefield; On-site; GBP 65,000 - 90,000; Full time

Job summary

OCU Group seeks a Senior Protection and Control Engineer to lead design and delivery of protection and control systems for HV and EHV substations across the UK. You will coordinate with multi-disciplinary teams to deliver robust, compliant schemes and technical submissions for DNO approval.

You will ensure protection studies, relay settings, and coordination are completed to high standards, supporting testing, commissioning and handover.

Qualifications

• Bachelor's degree in electrical or electronic engineering.
• Proven experience delivering protection and control designs for HV and EHV substations.
• Strong knowledge of high-voltage protection principles, protection relays, SCADA, RTUs.
• Experience relay settings calculations and protection coordination studies.
• Excellent communication, technical documentation and organisational skills.
• Experience delivering protection and control designs for substation new builds, upgrades and network reinforcement projects across 11kV to 132kV.
• Familiarity with GIS and AIS switchgear, transformer protection, and overhead line and underground cable protection schemes.
• Experience coordinating protection settings and control interfaces with SCADA, RTU and wider substation automation systems.
• Experience reviewing third-party engineering designs, supporting commissioning activities and resolving technical issues during project delivery.
• Knowledge of DNO design approval processes, relevant industry standards and technical assurance requirements within regulated electricity network environments.

Responsibilities

• Lead the development and review of protection and control designs, including single-line diagrams, protection schematics, wiring diagrams and control philosophies.
• Ensure all designs comply with DNO requirements, relevant national standards and project specifications.
• Undertake protection studies, fault level assessments, relay settings calculations and coordination studies, supporting technical submissions for DNO approval.
• Coordinate with primary electrical, civil and control systems engineers to deliver integrated protection and control solutions across HV and EHV substations.
• Provide technical assurance of protection schemes, ensuring systems are safe, reliable, operable and fit for purpose.
• Support design reviews, testing, commissioning and handover, ensuring protection systems perform as intended and technical documentation is complete.
• Oversee third-party designers and review protection and control deliverables produced by subcontractors and consultants.

Skills

HV protection

Protection relays

Coordination studies

SCADA & RTUs

Technical documentation

Education

Bachelor's degree in electrical or electronic engineering

Job description

OCU Group seeks a Senior Protection and Control Engineer to lead design and delivery of protection and control systems for HV and EHV substations across the UK. You will coordinate with multi-disciplinary teams to deliver robust, compliant schemes and technical submissions for DNO approval.

You will ensure protection studies, relay settings, and coordination are completed to high standards, supporting testing, commissioning and handover.