Transmission line protection which uses distance relays as a primary and backup is very common. Their operating principle is based on impedance interpretations at the relaying juncture, which can be affected by a number of factors like line loading prior to a fault in addition to short circuit peaks that at line end points. The network encounters a rise in short circuit levels due to the ongoing demand for electricity, which presents new difficulties. One of the suggested solutions to this issue involves the implementation of a Fault Current Limiter (FCL) that also enforces major changes mainly on measured impedance now at relaying point. The impact of hybrid superconducting fault current limiters (HSFCL) over measured impedance with distance relay so at relaying location is examined in this paper, primarily in the perspective of line to ground fault. MATLAB software is used to model a transmission system with distance relay protection and even a hybrid superconducting fault current limiter (HSFCL). MATLAB software is utilized to simulate a transmission system with distance relay protection as well as a hybrid superconducting fault current limiter (HSFCL). Both topologies of Hybrid superconducting fault current limiter (HSFCL), over distance relay protection for line to ground fault, will indeed be examined and contrasted.

Transmission Line, Distance Protection, Apparent impedance, Fault current limiter, Impedance trajectories.