When managing reactive resources, which bank is used to counteract high voltage conditions?

The correct answer is the reactor bank. Reactor banks are specifically designed to counteract high voltage conditions in an electric power system. When there is excess reactive power in the system, it can lead to high voltage levels, which can create instability and risk for the system components.

A reactor bank works by absorbing reactive power, thus reducing the voltage levels and helping maintain a stable operating condition. This function is crucial in managing the overall power quality and reliability of the electrical system.

In contrast, capacitor banks are utilized to inject reactive power into the system, which would exacerbate high voltage conditions rather than mitigate them. Synchronous condensers act similarly to capacitor banks, providing reactive power support but are typically not employed specifically to counteract high-voltage conditions. Transformer banks are used to change voltage levels and do not play a direct role in reactive power management related to high voltage scenarios.