Which option best represents the domain where 230 kV is standard?

• A. Distribution Systems
• B. Transmission Systems
• C. Industrial Customer Systems
• D. Generation Systems

Answer: (B)

230 kV is a transmission-level voltage because it’s used for moving large amounts of power over long distances with minimal losses. High voltages in the tens or hundreds of kilovolts reduce current for a given power, which lowers I²R losses and allows efficient bulk transfer between generation sites and load centers. Distribution systems operate at much lower voltages (scaled down for safe, local delivery to homes and businesses), while generation systems focus on producing power and typically feed transformers that step voltage up or down for transmission or distribution. So the voltage level described fits the transmission domain, the backbone that interconnects large portions of the grid.