How the KVAR supplied by synchronous generator?

Synchronous generators supply reactive power (measured in kilovolt-amperes reactive or KVAR) by adjusting their excitation level. When the excitation is increased, the generator can produce more reactive power, which is essential for voltage regulation in the power system. Conversely, if the excitation is decreased, the generator can absorb reactive power. This ability to control reactive power makes synchronous generators crucial for maintaining system stability and voltage levels in electrical grids.