Abstract This paper describes an in-depth signal processing analysis of the second-order Taylor-Kalman-Fourier (T2KF) filter as input signal to a phase comparator in digital distance relay. Tripping condition corresponds a successful phase comparison between operating signal and polarization signal (the angle among signals is inside angular limits, typically ± 90∘), this is equivalent to the fact that the measured impedance is less than the relay setting. The analysis is performed by regarding a phase comparison stage fed by phasors provided with the T2KF. In this paper, the proposed filter improves the relays steady-state and transient responses, in comparison with the well-known Fourier and Cosine filter, since the T2KF filter avoids fluctuations that may lead to overreach and underreach problems. The results are carried out in order to assess the proposed application.

中文翻译：

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动态相量驱动数字距离继电器保护

摘要 本文描述了将二阶泰勒-卡尔曼-傅立叶 (T2KF) 滤波器作为数字距离继电器中相位比较器的输入信号的深入信号处理分析。跳闸条件对应于操作信号和极化信号之间的成功相位比较（信号之间的角度在角度范围内，通常为±90∘），这相当于测量阻抗小于继电器设置的事实。通过考虑由 T2KF 提供的相量馈送的相位比较级来执行分析。在本文中，与众所周知的傅立叶和余弦滤波器相比，所提出的滤波器改进了继电器的稳态和瞬态响应，因为 T2KF 滤波器避免了可能导致超出和未达到问题的波动。