A back-up protection of teed-transmission line using Taylor-Kalman-Fourier filter

A second order Taylor-Kalman-Fourier (T
²
KF) filter based backup protection of teed-transmission network is demonstrated in this paper. The measured current and voltage signals at relaying end will be supplied to the proposed T
²
KF filter to estimation of the faulty section from relaying point. This algorithm has considered the out-feeding effect in the presence of practical load for estimating the fault impedance accurately. The proposed method is tested on a teed-transmission network. The results show that this method has identified the faults in backup zones successfully.