Overview
Mayfield Primary Substation is an operational electrical substation in Kentucky, United States, owned and operated by the Tennessee Valley Authority (TVA) with a voltage of 161 kV.
Mayfield Primary Substation is an operational electrical substation located in Kentucky, United States. It is owned and operated by the Tennessee Valley Authority (TVA), a major federal power utility. The substation operates at a voltage of 161 kV, placing it in the high-voltage transmission category, which is critical for regional grid stability and power distribution. As part of the TVA system, Mayfield Primary Substation is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulations. These frameworks ensure the substation meets stringent requirements for grid reliability, cybersecurity, and operational safety. The 161 kV voltage level is typical for sub-transmission and distribution in the United States, serving as a key link between bulk power transmission and local distribution networks. The substation plays a vital role in supplying electricity to the Mayfield area and surrounding communities in western Kentucky. Its operation supports residential, commercial, and industrial loads, contributing to the economic activity of the region. TVA's integrated grid management ensures that the substation maintains reliable power flow, especially during peak demand periods or extreme weather events common in the region.
Environmental context
The substation is located in a rural area of western Kentucky, characterized by agricultural land and small communities. The local environment includes mixed forests and farmland, with the substation's footprint being relatively small. Electrical infrastructure like this substation can have localized impacts such as electromagnetic fields and habitat fragmentation, but TVA typically implements mitigation measures including vegetation management and wildlife protection protocols.
Frequently asked questions
Mayfield Primary Substation is located in Kentucky, United States, near the city of Mayfield. Its coordinates are approximately 36.70° N, -88.56° W.
Mayfield Primary Substation operates at a voltage of 161 kV, which is a common sub-transmission voltage level in the United States.
The substation is owned and operated by the Tennessee Valley Authority (TVA), a federally owned electric utility company serving the Tennessee Valley region.
As part of the US electrical grid, the substation must comply with NERC reliability standards and FERC regulations, including requirements for grid stability, cybersecurity, and maintenance.
A 161 kV substation typically serves as a sub-transmission node, stepping down voltage from higher transmission levels (e.g., 500 kV) to distribution levels (e.g., 69 kV or lower) for local delivery to customers.