What is a typical response to an unexpected voltage rise?

A typical response to an unexpected voltage rise is to bring reactors on-line to manage voltage. This action helps to absorb excess reactive power, which can contribute to the stability of the voltage levels within the system. When voltage rises unexpectedly, it can lead to potential operational problems, including equipment damage or system instability. By bringing reactors on-line, operators can effectively control and lower the voltage by consuming reactive power, thereby helping to return the system to its desired voltage levels.

In contrast, increasing generation across all units may exacerbate the voltage rise by adding more reactive power into the system. Reducing overall energy production might help manage some aspects of generation but doesn’t specifically address the immediate issue of voltage management. Initiating load shedding protocols is a more drastic measure applicable during severe situations where the system is at risk of failure or instability, and it is not the preferred initial response to a simple voltage rise. Therefore, the targeted approach of incorporating reactors allows for a focused and effective means of controlling voltage levels in the system.