Project Highlights
- Transmission line engineering and design.
- Technical specifications for material and equipment.
- Testing and commissioning.
Project Description
Sargent & Lundy is teaming with Cianbro Corp. (Pittsfield, ME) to design and build five new substations for Central Maine Power. Sargent & Lundy is a subcontractor to Cianbro for the engineering and pre-testing of the following substations:
- Albion.
- Monmouth.
- Raven Farm.
- Larrabee Road.
- Coopers Mills Road.
Three of the substations are 345/115/13.8-kV, one is a 345-kV switchyard and one is a 115/34/12-kV substation.
Project Scope
Sargent & Lundy’s scope of work for the five substations includes complete engineering of the electrical, civil, and structural portions of the substations. Site development for the substations was engineered by the owner and awarded as a separate construction contract. Sargent & Lundy is also specifying all of the equipment and providing procurement support to Cianbro for the substations.
Four of the substations will connect into the Maine power grid through a new 345-kV transmission backbone that will carry power from east central Maine down to southeastern New Hampshire. The existing transmission system, built in the early 1970s, will be upgraded to support current and future loads in Maine as well as the addition of wind generation in the region.
These greenfield, open-air substations include autotransformers, breakers, capacitor banks, inductors, and new control buildings. Sargent & Lundy wrote the technical specifications and coordinated the procurement for all of the engineered equipment with the exception of the owner provided transformers and circuit breakers. Sargent & Lundy coordinated the new equipment testing at each substation, as well as writing of commissioning plans.
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