Electrical Substation Design and Distribution

University of Illinois at Chicago

Chicago, Illinois

The project included the design and installation of two 69/138KV to 12.47KV outdoor substations in constrained urban sites.  Compact 138KV SF6 Gas Insulated Switchgear (GIS) was utilized to minimize the substation dimensions.  An existing 12.47KV ComEd utility system, which provided service to the campus buildings, was converted to a University-owned 12.47KV system.  The new electrical system is capable of distributing 56MW of on-site generation directly to the campus loads.  The scope of work included 6.3 miles of 138KV XLPE underground cable connecting the two University substations, 2 miles of underground ductlines and manholes, metering, and protective relaying.

Henneman Engineering provided a complete package of design and construction services, including preparation of contract documents for construction and purchase of equipment, construction administration, field observation throughout construction, and scheduling of delivery/installation of substation equipment.

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