Olsson Industrial Electric (Olsson) proudly completed a Station Service Transformer Replacement project at the Little Goose Lock and Dam in 2018.

Charged with removing and replacing the two existing station service transformers, T01 and T02, the Olsson Team led both technical design and construction efforts in parallel. OS Engineering, Olsson’s in-house Professional Electrical Engineers, worked closely with the U.S. Army Corps of Engineers (USACE) and Niagara Transformer Corporation (Niagara) to design two new three-phase, oil-filled, Class I station service power transformers rated at 3750 kVA, 13.8 kV high-voltage, 4.16 kV low-voltage, with Class OFWF cooling. Meanwhile, Olsson’s Construction Team worked diligently to plan the removal, replacement, and commissioning of said units so as to maintain continuity of station service power throughout the entire project.

In addition to the new transformers, Olsson replaced several ancillary components to the station service system at the dam. On-load tap changer (OLTC) remote controls, transformer lock-out relays, 15 kV feeder cables, 5 kV feeder cables, new 480 V 30 A motor control center (MCC) buckets, and miscellaneous control wiring were all included in the project’s scope. From technical design to supply, installation, and testing, the Olsson team worked hard to provide the USACE with an exceptional product. Olsson was proud to have logged more than 4,000 man-hours to complete this project on-time without any recordable incidents.

Olsson is proud to partner with the USACE on some of their most critical infrastructure projects.