Distance Relays Based on the Taylor–Kalman-Fourier Filter

This paper proposes the use of a second order Taylor-Kalman-Fourier filter for reliable estimation of current and voltage phasors and their application for distance relays in order to estimate the line's impedance. The proposed filter improves the relay's steady-state and transient responses, with respect to the well-known discrete Fourier transform, which is the most used tool in transmission line protection and in phasor measurement units. Three-phase and single-phase simulations are carried out in order to assess the proposed application.

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