Julius Mudyirwa

Protection & Control engineer with 3+ years of engineering experience, including 1.5 years specialising in dedicated MV protection relay scheme design and commissioning (11kV–33kV), IEC 61850 GOOSE/MMS implementation, and grid code compliance for generation and distribution assets. Proficient across multi-vendor IED environments — Schneider Easergy P3U30, SEL-751, and ABB REF615/REX615 — with end-to-end ownership from protection philosophy and settings calculations through Omicron secondary injection and client-ready documentation. Registered with the Engineering Council of South Africa (ECSA) as a Candidate Engineering Technologist, working towards professional registration.

Seeking to build on a strong MV distribution foundation with exposure to transmission-scale substation design.

Electrical Engineering Technologist — Protection & Substation Automation - Technoserve Medium Voltage - Cape Town, South Africa

(2025-02)

• Configure and commission MV protection relay schemes (11kV–33kV) across Schneider P3U30, SEL-751, and ABB REF615 platforms — 40+ relays to date — verifying settings against system fault levels, CT/VT ratios, and IEC 60255 standards, with Omicron CMC secondary injection confirming correct operation prior to energisation.
• Implement IEC 61850 GOOSE/MMS communication schemes end-to-end: GCB configuration, dataset binding, subscriber AppID/MAC/ConfRev validation, using ABB PCM600, SEL RTAC & Architect, and Omicron functional GOOSE trip verification across multi-vendor IED environments.
• Execute ETAP load flow and IEC 60909 fault level studies to identify protection coordination deficiencies — IDMT grading margin violations, pickup conflicts, CTI infringements — producing relay resetting recommendations that have materially reduced nuisance tripping on affected feeders.
• Author protection settings documentation, relay selection rationale, and coordination reports for client and regulatory submission — maintaining full document traceability across the project lifecycle to Eskom DSP and IEC standards.
• Configure grid code LVRT, UFRT, HFRT, and ROCOF compliance schemes for grid-connected generation assets, verified via Omicron CMC secondary injection.
• Execute structured pre-commissioning and commissioning test programmes — relay functional verification, FAT witnessing, punch list closeout — consistently achieving low on-site defect rates across the full project portfolio.
• Contribute to SCADA integration design: SEL RTAC as IEC 61850 MMS gateway, DNP3 point mapping, peer-to-peer GOOSE, and substation HMI development for relay monitoring and control.

Electrical Engineering Technician — Solar PV & MV Systems - Technosolar - Cape Town, South Africa

(2023-03 - 2025-01)

• Designed grid-connected solar PV systems from concept to detailed design for commercial installations up to 1 MVA — DC string and combiner sizing, AC reticulation, inverter selection, and PVSyst yield modelling — with all designs proceeding through client review without major rework.
• Produced single-line diagrams and electrical layout drawings for 10+ commercial PV projects using PC Schematic and AutoCAD Electrical, implementing structured revision control that reduced amendment cycles between issue stages.
• Achieved 100% first-pass regulatory approval across all grid connection submissions (NRS 097, Eskom EEB705) — zero rework throughout tenure.
• Supervised and mentored junior technicians during PV installation and commissioning phases — zero safety incidents throughout tenure.

Bachelor of Engineering Technology (BTech) - Electrical Engineering - Cape Peninsula University of Technology (CPUT) (2023-01)