What type of banks are tailored for individual lines?

The term "line banks" specifically refers to the configuration and arrangement of transformer banks that are designed to support individual lines of electrical distribution. These banks are particularly important in electric utility operations because they can efficiently regulate voltage and manage load for specific lines, ensuring that each line operates within its capacity limits and maintains reliability.

Line banks serve a specialized purpose, providing tailored support to the unique requirements of each distribution line. This adaptability is critical in a utility's infrastructure as it allows for enhanced control and efficiency in managing power distribution, improving the overall stability and resilience of the electrical grid.

In contrast, the other types of banks mentioned in the choices serve different functions or are broader in scope. For example, bus banks typically refer to collections of electrical conductors that connect multiple power sources and loads, while capacity banks relate to overall load management across an entire system rather than individual lines. Power banks generally refer to energy storage systems and do not focus on specific lines in the context of electrical distribution. Therefore, the specificity of line banks makes them the pertinent answer for the question posed.