- Stanley Substation Refurbishment
Our team is providing full engineer-procure-construct (EPC) services for the Stanley Substation refurbishment. The 115/13.8-kV Stanley Substation was originally placed in service in 1958 and is being supplied by two 115-kV circuits. Much of the equipment in the yard and control house has reached its useful end-of-life and need to be replaced.
The refurbishment project will replace one 115-kV and two 13.8-kV 75-MVA (dual secondary winding) transformer, install one new 13.8-kV switchgear in a pre-cast building, replace all 115-kV and 13.8-kV protection in a new control room, and replace all existing roll-in 13.8-kV switchgear breakers. The transmission termination lattice structure will be relocated for both circuits and provide construction sequencing to minimize outages.
The substation supplies critical load within the city of Niagara Falls, so all equipment being replaced requires a recall time of 8 hours or less. Developing a detailed construction sequence plan for the entire project required over 20 phases and close coordination with all stakeholders to incorporate specific requirements, while considering the physical limitations of the site.
- Hydro One had major outage constraints due to customer load and agreements in the area. One transformer, either existing or new, had to be energized whenever feasible. Our team developed construction sequencing and circuit transfers to maintain energization of transformer and distribution feeders during construction.
- This project used a laser mobile scanner to capture 3D imagery of substation and transmission towers. This helped provide accurate data and details of existing assets where records are poor or cannot be located. This was completed by our in-house engineering team, which takes the data and applies it in CAD software, allowing for a more accurate design and less RFI during construction due to inconsistent or inaccurate records.