Overview
LR Industrial Substation, operated by Entergy Arkansas in the United States, is a 115 kV substation supporting grid stability and industrial power distribution.
LR Industrial Substation is an operational electrical substation located in the United States, specifically in Arkansas near Little Rock. Operated by Entergy Arkansas, this facility operates at a voltage of 115 kV, placing it in the medium-to-high voltage range typical for industrial and regional distribution networks. As a substation, it plays a critical role in stepping down transmission-level voltages for local industrial consumers and integrating into the broader grid infrastructure. 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 bulk power systems. In the United States, substations like LR Industrial are subject to NERC's Critical Infrastructure Protection (CIP) standards, ensuring cybersecurity and physical security. The 115 kV voltage level is common for sub-transmission and distribution, often serving large industrial loads or connecting to lower-voltage distribution networks. Environmentally, LR Industrial Substation is situated in a region with a mix of urban and industrial development near Little Rock. Its operation supports the electrical infrastructure for industrial activities, contributing to local economic productivity. The substation's age and specific equipment are not detailed, but typical substations of this voltage class use gas-insulated switchgear (GIS) or air-insulated switchgear (AIS) depending on space and environmental considerations. The facility's role in the grid is essential for maintaining reliable power supply to industrial customers in the area.
Environmental context
The substation is located in central Arkansas, a region with a humid subtropical climate. The area experiences hot summers and mild winters, with occasional severe weather such as thunderstorms and tornadoes. These conditions can impact substation operations, necessitating robust design for weather resilience. The surrounding land use includes industrial and commercial developments, with proximity to the Arkansas River. The substation's 115 kV voltage level is typical for industrial distribution, and its location in an urban-industrial interface means it must balance operational efficiency with environmental considerations such as noise and visual impact.
Frequently asked questions
LR Industrial Substation is located in the United States, specifically in Arkansas near Little Rock, at coordinates 34.694012, -92.315640.
LR Industrial Substation operates at a voltage of 115 kV, which is a common sub-transmission voltage level used for industrial power distribution and regional grid connectivity.
LR Industrial Substation is operated by Entergy Arkansas, a utility company serving parts of Arkansas.
Substations in the United States are subject to NERC reliability standards and FERC regulations. NERC's Critical Infrastructure Protection (CIP) standards mandate cybersecurity and physical security measures for bulk power system assets.
A 115 kV substation typically steps down transmission-level voltages (e.g., 230 kV or higher) to distribution-level voltages (e.g., 34.5 kV or lower) for industrial and commercial customers. It also provides switching and protection functions to maintain grid stability.