50MW / 230kV Substation Leamington, ON

Keys to Success:

    Integrated HONI and IESO engagements early in the process: worked closely with Hydro One and IESO teams responsible for the local Transmission and System Impact infrastructure to ensure all the requirements are met before the start of the project construction.




Scope of Services:


  • Turnkey EPC
  • New HV substation design incl. power distribution equip. and feeders
  • Power System Engineering incl. incl protection, Communication & Controls
  • Prepared and filled CIA and SIA application, and Coordination with IESO and HONI for all approvals
  • Prepared and submitted ESA Plan Approval pckg. Including all required calculations, drawings and documents.
  • Equipment supply and installation
  • Project commissioning, testing and acceptance
  • Substation Specification:


  • 230kV direct Transmission line interconnection
  • 35 / 44 / 53 MVA, 230/27.6kV Transformer
  • 230kV, 2000A Circuit Breaker
  • 230kV Disconnect Switch
  • 20 MVar Capacitor Bank at 27.6kV
  • 27.6kV Metal Enclosed Switchgear
  • Special Protection System (SPS) for load rejection as per the IESO contingency matrix
  • Local under-voltage L/R scheme
  • Fully redundant teleprotection and separation of communication channels (e.g. 2 antenna towers) compliant with the requirements of the NPCC Type I SPS criteria.
  • Designed according to the TSC max. fault levels of 63kA
  • Under-Frequency Load Shedding (UFLS) at 59.5Hz with 3s time delay
  • IESO Telemetry
  • Revenue Metering
  • Protection System for transmission voltage BPS elements with fully redundant protective relaying, trip coils of the HV circuit breaker, HV instrument transformers, battery banks
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