Fault current signals typically suffer from primary and secondary decaying DC (DDC)
components due to the transient response of the power system and current transformer. On …

Differential protection is a widely-used approach for power transformer protection, the
performance of which may be, at times, challenged due to the inrush current and current …

Differential protection failure in discrimination of inrush and internal fault currents will impose
significant challenges and damages both on the power transformers and power systems. To …

This article proposes a novel technique for fundamental and selective harmonic phasor
estimation of a single-phase voltage signal based on open-loop voltage signal processing …

The fundamental current component at the secondary side of current transformer (CT) is
often accompanied with decaying direct current (DC) component produced by the system …

The discrete Fourier transform (DFT) is a powerful phasor estimation algorithm
conventionally used in digital relaying applications. The DFT‐based phasor estimation is …

The fundamental frequency phasor measurement method based on Fourier transform is
affected by the decaying DC offset in fault current. To reduce this effect, a morphological …

Frequency is one of the essential parameters for monitoring, control, and protection in power
systems. Some protection devices use frequency for deciding under various conditions of …

Exponentially decaying direct current (EDDC) components in the faulted current of a power
system can result in an imprecise estimation of the fundamental frequency component …

The decaying DC calculation is an important task for the implementation of fault detection
and transient protection in power system. Speed and precision are its fundamental …