Adaptive distance relay setting for transmission lines in presence Of UPFC and wind farms

Abstract

This thesis presents an adaptive distance relay setting for transmission lines with Unified Power Flow Controller (UPFC) and wind farms together. The ideal trip characteristics of distance relay is greatly affected in presence of UPFC in transmission lines as the apparent impedance is significantly affected. Similarly, the reach setting of the relay for the lines connecting wind farms is significantly affected as the relay end voltage fluctuates continuously. Thus, the proposed study focus on developing adaptive relay setting for transmission lines including both UPFC and wind farms considering variations in operating conditions of UPFC as well as wind farms together.