PROTECTION AND CONTROL · POWER SYSTEM STUDIES · COMMISSIONING
Power system studies, relay protection and commissioning
Optimum Engineering Ltd. models, protects and commissions low- and high-voltage electrical systems for utilities, renewable generation, data centers, and commercial and industrial facilities.
PEO-CERTIFIED ENGINEERING COMPANY · UTILITIES · RENEWABLES · DATA CENTERS · COMMERCIAL AND INDUSTRIAL
WHAT WE DO
Three services, one aim: keep your system safe, coordinated and online
Engineering service
Expert power system studies that support resilient grid planning and optimized operations.
Short circuit study
Protection device coordination study
Arc flash analysis
Load flow analysis
Ground grid designing
Harmonic analysis
Power stability and motor starter analysis
Low- and medium-voltage cable ampacity and temperature analysis (Neher-McGrath)
Relay protection and SCADA
We calculate, set, test and commission protection systems, and we investigate when something trips.
Protection and control solutions, including relay settings calculation and SCADA design and programming
Relay protection system testing and commissioning
Relay setting configuration and logic development for microprocessor relays
Analysis of faults and sequence of events records
SCADA testing and verification
Electrical equipment testing and commissioning
Project management and designing
We design protection and control upgrades and see them through to energization.
Protection and control panel retrofit designing
Project management, commissioning and FAT witness testing
CAD drawing service
SCADA designing
SPECIALIZED SERVICES
Switchgear design, protection settings and AI-assisted predictive maintenance
Low- and medium-voltage switchgear design
Design of low- and medium-voltage switchgear together with its protection and control.
Protection and control settings development
Protection and control settings developed, documented and delivered ready for testing and commissioning.
Predictive maintenance with AI engineering tools
Calculation tools and AI-based engineering solutions for predictive maintenance of electrical equipment.
NEW
ADDED TO OUR SERVICE PORTFOLIO
Low- and medium-voltage cable ampacity analysis, with our own tools
Ampacity and temperature analysis for low- and medium-voltage cables is part of our engineering service. We carry it out with calculation tools developed in-house by Optimum Engineering.
NEHER-McGRATH
Duct bank ampacity
Our calculator for low- and medium-voltage cables in underground duct banks, used in our ampacity and temperature analysis where table values are not enough. Accounts for duct arrangement, burial depth, soil thermal resistivity and load factor.
NEC 310.16
Low-voltage conduit ampacity
Our calculator for low-voltage conductors in conduit, used in our low-voltage cable ampacity analysis. Applies ambient temperature correction and conductor-count adjustment to the table ampacity.
Developed and owned by Optimum Engineering Ltd. for use in our engineering service. Validated against commercial ampacity software.
NEW
ADDED TO OUR SERVICE PORTFOLIO
Protection and control solutions
Relay settings calculated and documented for microprocessor relays, together with SCADA design and programming, ready for testing and commissioning.
WHAT WE DELIVER
Relay settings calculation
Relay setting configuration and logic development
SCADA design and programming
Settings documented for testing and commissioning
OUR MATLAB SCRIPTS
SEL-411L line differential script
SEL-487E transformer differential and backup protection script
Distance relay settings script
Transient and frequency stability script
Switchgear design script with AI engineering tools
RELAY MANUFACTURERS WE WORK WITH
SEL
GE
ABB
Siemens
Schneider Electric
Beckwith
and more
SEL-487E transformer differential and backup protection
SEL-411L line differential: alpha plane and fault simulator
Stability study: frequency response after a generator trip
Distance relay settings: zones, fault simulation and test waveforms
SELECTED PROJECTS
Generation, data centers and large facilities
RENEWABLE GENERATION
Nanticoke Solar, 44 MW
Testing and commissioning of the solar collector system. Nanticoke, Ontario.
DATA CENTER
Google data center, Santiago
Protective relay commissioning. Santiago, Chile.
NUCLEAR GENERATION
OPG Darlington nuclear station
Load bank commissioning for the EPG-2 8 MW gas turbine, with Fairway Electric.
COMMERCIAL
Upper Canada Mall
Arc flash and coordination study for the mall's electrical distribution system.
INDUSTRIAL
Crumb Manufacturing
Grounding design for the manufacturing facility, with a touch voltage profile at the main transformer.
COMMERCIAL AND RESIDENTIAL
The Well, Toronto
Arc flash and coordination studies for one of the city's largest condominium complexes.
Building photo: Sikander Iqbal, CC BY-SA 4.0, via Wikimedia Commons.
CLIENTS INCLUDE
Ontario Power Generation · Avangrid · PCL Construction · City of Hamilton, Ontario · Niagara Health System · Electrobauer System Limited · Robertson Electric · CIMA+
Have a study or commissioning scope to price?
Send us your single-line diagram or a short description of the work.
PHONE
519-277-9302
LOCATION
Cambridge, Ontario
Optimum Engineering Ltd. · Cambridge, Ontario · 519-277-9302 · guelar@rlyope.com
© 2026 Optimum Engineering Ltd. All rights reserved.