Which of the following represents typical high transmission voltages?

High transmission voltages are used to transport electricity efficiently over long distances. Among the options provided, 230 kV is representative of typical high transmission voltages within the electrical power system. This level of voltage is commonly found in transmission systems that connect substations and is part of a tier of voltages that facilitate the movement of large amounts of electrical power while minimizing energy losses due to resistance in the conductors.

While other voltage levels like 115 kV may also be considered in some transmission scenarios, they tend to represent lower levels of voltage transmission compared to the more common 230 kV. Higher voltages such as 480 kV or 600 kV do exist and can be utilized in certain situations, especially in bulk transmission applications or specific high-capacity lines, but they are less common for general high voltage transmission systems. Thus, 230 kV is the most appropriate choice to represent typical high transmission operating voltages.