Extreme Transmission Construction Challenges

Sept. 29, 2020
Manitoba Transmission project rises above it all.

Manitoba Hydro recently completed the Manitoba-Minnesota transmission project (MMTP), a 213-km (132-mile), 500-kV ac transmission line built to deliver additional electricity to its neighbor Minnesota Power over the next 15 years.

MMTP was a major achievement for Manitoba Hydro despite challenging weather conditions, a narrow construction window, boggy terrain and the COVID-19 pandemic. This project required the utility to proactively identify and manage risks quickly to ensure the work would not be interrupted, considering the condensed construction schedule. The project team had to be agile in adapting to sudden challenges and communicate closely with team members to resolve problems quickly. MMTP was an opportunity to demonstrate the utility’s ability to work together effectively and overcome challenges quickly for a successful project completion.

Following are images of the process, originally featured in the in-depth article appearing in the September issue of T&D World. For the full story, see "Manitoba Transmission Project Rises Above it All."

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A helicopter guided wire through pulleys. Once the first phase of stringing was finished, the small-gauge cable was attached to another thicker cable and pulled back through the pulleys. The thicker cable was used to pull the final conductor into place.
A helicopter guided wire through pulleys. Once the first phase of stringing was finished, the small-gauge cable was attached to another thicker cable and pulled back through the pulleys. The thicker cable was used to pull the final conductor into place.
A helicopter guided wire through pulleys. Once the first phase of stringing was finished, the small-gauge cable was attached to another thicker cable and pulled back through the pulleys. The thicker cable was used to pull the final conductor into place.
A helicopter guided wire through pulleys. Once the first phase of stringing was finished, the small-gauge cable was attached to another thicker cable and pulled back through the pulleys. The thicker cable was used to pull the final conductor into place.
A helicopter guided wire through pulleys. Once the first phase of stringing was finished, the small-gauge cable was attached to another thicker cable and pulled back through the pulleys. The thicker cable was used to pull the final conductor into place.
Overhead Transmission

Manitoba Transmission Project Rises Above it All

Aug. 21, 2020
Despite a global pandemic and other challenges, Manitoba Hydro commissioned a 502-tower transmission line in June 2020.