Goldcorp’s Hoyle Pond operation urgently required electrical distribution system upgrades to increase gold production in order to meet increasing demand. Several projects were undertaken to meet this objective.
The first phase of this project was the construction of a new 15/20 MVA 27.6-13.8 kV substation. As part of this phase, our firm provided detailed design and construction documents for the station grounding system, station equipment foundations, switch house layout, foundation, and fire separation. During commissioning, we provided a coordination study for the 27.6 kV and 13.8 kV system associated with the new substation, including detailed protective device settings.
The second phase of the project was the construction of a new 10 MVA 27.6-4.6 kV substation. Our work included detailed design and construction documents for the station’s layout, foundations, grounding system, and existing switch house modifications. The project involved computer modelling of the substation’s ground potential rise during a fault to evaluate transferred potential across the site via process piping in the area. Based on our modelling work, additional grounding systems and electrically isolated pipe sections were added at various locations near the station to ensure the safety of the site.