What is the term used for generators operating to absorb VARs in order to lower system voltage?

The term used for generators that operate to absorb VARs (volt-ampere reactive) in order to lower system voltage is "leading." When generators operate in a leading mode, they supply reactive power to the system. This reactive power absorption helps counteract the effects of inductive loads, which can cause a rise in voltage levels in the power system. By operating in a leading mode, these generators effectively reduce voltage levels as needed, ensuring system stability and maintaining voltage within the required operational limits.

Understanding the operation of VARs is crucial in managing power systems. In electrical systems, inductive loads (such as motors) draw reactive power, creating a lagging power factor, while capacitive loads create a leading power factor. Generators that can adjust to provide reactive power when necessary play a vital role in voltage regulation and overall grid reliability.