Overview
Central Angelina Substation is an operational electrical substation in Texas, United States, owned and operated by Oncor. It handles voltages of 138 kV, 25 kV, and 12.5 kV, serving the regional grid.
Central Angelina Substation is an electrical substation located in Texas, United States, owned and operated by Oncor. As a substation, it plays a critical role in stepping down transmission-level voltages for distribution to local consumers. The facility is operational and forms part of the broader electrical infrastructure managed by Oncor, a major transmission and distribution utility in Texas. The substation operates with multiple voltage levels: 138,000 volts (138 kV) for transmission, and 25,000 volts (25 kV) and 12,500 volts (12.5 kV) for sub-transmission or distribution. This voltage configuration is typical for a substation that connects high-voltage transmission lines to lower-voltage distribution networks. In the United States, such facilities are subject to NERC reliability standards and FERC regulation for grid stability and security. Central Angelina Substation supports the electrical grid in the Angelina County area, contributing to reliable power supply for residential, commercial, and industrial customers. Its location in Texas, a state with a large and growing energy demand, underscores its importance in maintaining grid resilience and meeting regional electricity needs.
Environmental context
The substation is located in a rural area of eastern Texas, characterized by forests and low-density development. Its environmental context involves potential impacts on local wildlife and vegetation from electromagnetic fields and land use, though substations typically have a small footprint. Modern substations often incorporate SF6-free switchgear and other technologies to reduce environmental impact.
Frequently asked questions
Central Angelina Substation is located in Texas, United States, near coordinates 31.443097, -94.779775, in the Angelina County area.
The substation handles voltages of 138,000 volts (138 kV), 25,000 volts (25 kV), and 12,500 volts (12.5 kV), serving both transmission and distribution functions.
The substation is owned and operated by Oncor, a major electric transmission and distribution utility serving Texas.
In the United States, substations are regulated by NERC reliability standards for grid stability and FERC for interstate transmission. Oncor must comply with these to ensure safe and reliable operation.
Substations transform voltage levels between transmission and distribution networks, enabling efficient long-distance power transmission and safe local distribution. They also provide switching, protection, and monitoring functions.