Overview
ComEd Diversey Substation is an operational 138 kV substation in Chicago, Illinois, owned and operated by Commonwealth Edison, serving the local electrical grid.
ComEd Diversey Substation is a key electrical infrastructure facility located in Chicago, Illinois, United States. Operating at 138 kV, it is a medium-voltage substation that plays a critical role in distributing power within the Commonwealth Edison (ComEd) network, which serves northern Illinois. The substation is currently operational and is part of the broader PJM Interconnection grid, one of the largest regional transmission organizations in the US. The substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and must comply with North American Electric Reliability Corporation (NERC) reliability standards. As a 138 kV facility, it is typical of urban substations that step down transmission voltages for local distribution. The equipment likely includes circuit breakers, transformers, and switchgear that adhere to standards such as IEEE C37 for high-voltage switchgear. Located in a densely populated urban area, the substation supports the electrical needs of Chicago's residential and commercial sectors. Its role in grid stability is significant, as it helps manage load and maintain voltage levels. Ongoing maintenance is typical for such critical infrastructure to ensure reliability and safety.
Environmental context
The substation is situated in an urban environment in Chicago, where electrical infrastructure must balance reliability with environmental considerations such as electromagnetic fields and noise. The 138 kV voltage level indicates moderate electromagnetic field emissions, which are typically managed through siting and shielding. Urban substations often incorporate landscaping or building-integrated designs to minimize visual impact. The facility's proximity to residential areas necessitates compliance with local noise ordinances and safety regulations.
Frequently asked questions
ComEd Diversey Substation is located in Chicago, Illinois, United States, at coordinates 41.930761, -87.675947.
ComEd Diversey Substation operates at 138 kV (138,000 volts), which is a common voltage level for subtransmission and distribution substations.
The substation is owned and operated by Commonwealth Edison (ComEd), a major electric utility serving northern Illinois.
As part of the US electrical grid, the substation must comply with NERC reliability standards and FERC regulations, as well as state-level requirements from the Illinois Commerce Commission.
A 138 kV substation typically steps down transmission voltages (e.g., 345 kV) to distribution levels (e.g., 34.5 kV or 12 kV) for local delivery to homes and businesses, playing a key role in grid stability and load management.