Abstract:
An adaptive distance relay setting for parallel transmission lines when a unified
power flow controller and wind farm are connected to a parallel transmission network. An ideal
trip characteristic of distance relay is significantly affected as the apparent impedance seen by
the relay is affected. Reach setting of distance relay is affected when a wind farm is connected
to it because of continuous fluctuation in relay voltage. Transmission-Line protection in the
presence of a unified power-flow controller (UPFC) is one of the major challenging issues in
power system protection. The presence of the UPFC in a fault loop affects the steady state and
transient component in the voltage and current signals.
