Patrick Street Transmission Station
115kV Refurbishment Project

Selected Projects

Substation Upgrade Projects

● Anjigami Transmission Station
● Clergue TS Protection System Upgrade Project
● CNP - Gilmore Station P & C Upgrade Project
● CNP - Station 17 P & C Upgrade Project
● CNP - Station 18 Expansion Project
● D. A. Watson Transmission Station
● Mackay Transmission Station
● Niagara-on-the-Lake Hydro 115kV  MTS #2
● Patrick Street Transmission Station
● Patrick Street Ground Grid Upgrade Project
● Third Line TS - Tertiary System & Capacitor Bank Configuration Study
● Third Line TS - T1 Replacement Project


Location: Sault Ste. Marie, Ontario
Owner: Hydro One, Sault Ste. Marie LP
Contractor: EPTCON Ltd.
Engineer: OneLine Engineering

OneLine Engineering provided complete electrical engineering and design services for the replacement of eight bulk oil circuit breakers with SF6 circuit breakers in a live switchyard. The scope of work included:

• Design for the integration of the new protection relay panels for the line protection, breaker failure protection and bus protection
• Design of temporary cabling as required during system change over during construction
• Production and/or updating of all related electrical drawings including single line diagrams, AC & DC schematics, trip logic diagrams, equipment layouts,   termination schedules, equipment grounding and lighting layouts
• Cable schedules for replacement of all control cabling
• Design of new station services including batteries and charger, new SSVT and PUC back-up supply
• Construction and commissioning assistance

OneLine Engineering is part of Cormorant Utility Services

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Selected Projects
High Voltage EPC Services

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