Taylor-Kalman-fourier filter based back-up protection for teed-transmission line

In this paper, a back-up protection philosophy based on second order Taylor-Kalman-Fourier (T²KF) filter is suggested for a multi-terminal transmission network. The measured current and voltage signals at relaying end will be supplied to the proposed T²KF filter to estimate of the fault section from the relaying point. This algorithm will estimate the fault impedance in presence of in-feeding effect. The proposed method is tested on a teed-transmission network. The results show that this method has identified the faults in backup zones successfully.