Substation Design

There were multiple substation projects with the City of Centralia. Cook’s Hill and North Port were greenfield 20/27/33MVA substations, including planning the size and location, design, specifications, bidding, relay and protection settings, transmission line, working with Bonneville Power Administration (BPA) for the tap and metering, and final inspection and commissioning. Ford’s Prairie and Zimmerman were major remodels, which included complete rebuilds of the secondary sides, ground grid, oil containment, relaying, and exit feeders. The Yelm Hydro was a complete rebuild of a generator step-up station including transmission breaker with distance relaying, ground grid, oil spill containment, fault current analysis, and generation protection settings.

There have been multiple substation projects with Wasco. Tygh Valley was a major remodel of an old BPA substation including a new power transformer, transmission breaker on a transmission tap, regulators, station service, protection recloser, settings, and ground grid. Pine Hollow was a complete removal and rebuild of another old BPA substation from the transmission high-side to the exit feeders, and everything in-between. Kah-Nee-Ta consisted of a new ground grid and feeder reclosers with the associated settings. The Muddy Ranch and Rosebush consisted of ground grid upgrades. Endersby is next to a sensitive watershed area, and therefore included detailed oil spill containment equipment along with new a new ground grid with grounding wells, regulators, secondary bay, and reclosers.