Power System Stabilizers (PSS) are devices used in electrical power systems to enhance the stability of generators. They work by providing additional damping to oscillations in the system, which can occur due to changes in load or disturbances. By adjusting the generator's output in response to these oscillations, PSS helps maintain a steady and reliable power supply. These stabilizers are typically integrated into the control systems of synchronous generators. They monitor system conditions and apply corrective actions to prevent excessive fluctuations. This ensures that the power grid operates efficiently and reduces the risk of blackouts or equipment damage.