In the Voltage Transmission Voltage Sags and Swells are the main factor which occurs at the time of transmission. Voltage Sags and Swells are the disturbances which increase the losses in the transmission and voltage get unstable. We can find these type of disturbance and remove that so that transfer voltage can be use in applications. Nonlinear loads and sensitive loads are affected by the Voltage Sags and Swells. DVR(Dynamic Voltage Restorer ) is the main and coast effective solution for reducing the losses from the Voltage Sags and Swells. DVR can protect the linear loads and sensitive loads from the Voltage Sags and Swells. In this paper, we are giving the Literature review for remove the Voltage Sags and Swells Issue at the transmission time.

Keywords : Dynamic Voltage Restorer (DVR), voltage sags, voltage swells, sensitive load.