T&D World Magazine

InfraSource Completes New 345 kV/115 kV Killingly Substation for Connecticut Light & Power

InfraSource Services, Inc. (NYSE:IFS), one of the largest specialty contractors servicing utility transmission and distribution infrastructure in the United States, announced that its M. J. Electric (MJE) business unit located in Shoemakersville, PA, recently completed work on a new 600 MW, 345-kV/115-kV “greenfield” substation for Connecticut Light & Power (CL&P) in Killingly, CT.

The Killingly construction project involved installation of two 345-kV EHV circuit breakers, eight 115-kV circuit breakers, and all associated relaying and communications. Civil construction began in November 2005; electrical work commenced in May 2006. The substation was energized December 8, 2006 and load added on December 11, 2006. Testing was completed February 25, 2007.

MJE crews tapped into one 345-kV and two existing 115-kV transmission lines; upgraded two 115-kV terminals at CL&P Tracy and Tunnel substations; and, upgraded communications and relaying at CL&P’s Tracy, Tunnel, Lake Road Generating and Fry Brook substations.

MJE is also relocating an existing 345-kV breaker at the Card Street substation and installing a new 345-kV breaker and associated relaying in series with the relocated breaker.

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