Overview
North Dayton Primary Substation is an operational 161 kV substation owned by Tennessee Valley Authority in Tennessee, USA. It plays a key role in regional grid stability and power distribution.
North Dayton Primary Substation is a 161 kV electrical substation located in Tennessee, United States. Owned and operated by the Tennessee Valley Authority (TVA), it is part of the high-voltage transmission network that serves the Tennessee Valley region. The substation's voltage level of 161 kV places it in the medium-to-high voltage range, typical for primary substations that step down power from extra-high-voltage transmission lines to sub-transmission or distribution levels. As a TVA asset, this substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). TVA is a federally owned corporation that provides electricity to 153 local power companies and directly serves large industrial customers. The substation likely incorporates modern protection and control systems compliant with NERC reliability standards, ensuring grid stability and resilience. The substation supports the local community by facilitating reliable electricity supply to residential, commercial, and industrial customers in the Dayton area. Its location in rural Tennessee underscores its role in connecting remote generation sources to load centers. The facility contributes to the overall reliability of the TVA transmission grid, which spans parts of seven southeastern states.
Environmental context
The substation is situated in a rural area of Tennessee, characterized by mixed forest and agricultural land. Its operation involves electromagnetic fields and potential oil spill risks from transformers, though modern containment measures mitigate these. The site's proximity to the Tennessee River watershed requires careful stormwater management to prevent runoff contamination. TVA's environmental stewardship includes habitat conservation and compliance with the National Environmental Policy Act.
Frequently asked questions
North Dayton Primary Substation is located in Tennessee, United States, near the town of Dayton. Its coordinates are approximately 35.54° N, 84.99° W.
The substation operates at 161 kV (161,000 volts), which is a common voltage for primary substations in the US transmission network.
The substation is owned and operated by the Tennessee Valley Authority (TVA), a federally owned corporation that provides electricity to the Tennessee Valley region.
As part of the US bulk power system, the substation must comply with NERC reliability standards and FERC regulations. TVA also follows its own internal standards for safety and environmental protection.
Primary substations step down voltage from extra-high-voltage transmission lines (e.g., 500 kV or 230 kV) to sub-transmission levels (e.g., 161 kV or 69 kV) for distribution to local networks. They are critical for grid stability and power delivery.