Waukegan Substation Expansion
Waukegan, Illinois
Client: Exelon Corporation – ComEd
Project Highlights:
The expansion of the existing 345/138-kV substation increased load flow capacity as well as strengthened reliability of the regional transmission system. Sargent & Lundy provided:
- Transmission line engineering and design
- Overhead transmission and distribution design
- Equipment specifications and material procurement
- Construction monitoring and quality assurance
Project Scope:
- Equipment and facilities included:
- Two (of ultimately four) 345/138-kV 300-MVA transformer banks
- Seven breakers (14 ultimate) 345-kV GIS
- 138-kV outdoor steel box structure with 138-kV breakers, 138-kV 115-MVar capacitor banks, 14 line positions
- Four 345-kV transmission line reroutes
- Fourteen 138-kV transmission line re-routes
- Two new relays, controls, and communications buildings for the 345-kV and 138-kV yards
- Fourteen remote-site substation relay and fiber upgrades
- Site demolition engineering
- Site engineering for contaminated soil and a high water table
- Procurement support of major equipment, construction contracts, and minor materials
- Outage planning and sequencing
- Development of overall engineering/construction schedule
- Onsite construction management team providing material tracking, QA/QC, site logistics, contractor and ComEd coordination, and interface with Waukegan station and governmental agencies
- Development of operating procedures
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