Overview
Saint David Substation is an operational electrical substation in Arizona, United States, operating at 69 kV for regional grid stability.
Saint David Substation is an operational electrical substation located in Arizona, United States. It serves as a node in the regional power grid, stepping down transmission-level voltage for local distribution. The facility operates at 69 kV, a common sub-transmission voltage level that connects bulk power systems to distribution networks. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for grid stability. As a 69 kV facility, it is classified as a sub-transmission asset, typically serving rural or suburban areas. The infrastructure likely includes circuit breakers, transformers, and switchgear compliant with IEEE and ANSI standards. Located in a semi-arid region of southeastern Arizona, the substation supports local communities and industries, including mining and agriculture. Its role in voltage regulation and load balancing is critical for maintaining power quality in the area. The facility's operational status ensures continued service to the surrounding electrical infrastructure network.
Environmental context
The substation is situated in a semi-arid environment with low annual rainfall and high solar exposure. Its 69 kV operation poses minimal environmental impact, though proper insulation and maintenance are required to prevent outages during monsoon storms. The facility's location away from densely populated areas reduces electromagnetic field exposure concerns.
Frequently asked questions
Saint David Substation is located in Arizona, United States, near the town of Saint David in Cochise County.
Saint David Substation operates at 69 kV, a sub-transmission voltage level that connects high-voltage transmission lines to lower-voltage distribution networks.
Electrical substations in the United States are regulated by the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards and grid stability requirements.
A 69 kV substation typically steps down transmission voltage for local distribution, serving rural or suburban areas. It helps maintain voltage stability and provides a connection point for industrial or commercial customers.
Substations in the US must comply with NERC reliability standards, IEEE safety guidelines, and OSHA regulations. These cover equipment maintenance, grounding, fire protection, and operational protocols.