Shengchang Ji

TL;DR: In this paper, an experimental system was designed and tested at different load current, dc source voltage, and gap length to evaluate the impact of each parameter to the dc arc based on the experimental results, characteristics in the electrical behavior were studied and fault detection oriented analysis was conducted.

TL;DR: In this paper, a dc arc generating device is designed to simulate dc arc faults caused by loose connection in dc systems, and a fourth-order Hilbert curve fractal antenna is adopted to detect the electromagnetic radiation signals of dc arc.

TL;DR: In this paper, a novel method called sweep frequency impedance (SFI) is proposed to address the difficulties that arise from frequency response analysis (FRA), which has some limitations, such as a low signal-to-noise ratio (SNR) and instability caused by changes in the measuring voltage.

TL;DR: It is determined that a Rogowski coil could be constructed with adequate bandwidth to cover the relevant frequency band of 1 kHz–1 MHz and found that the amplitude of the pulse and the difference in the integrated fast Fourier transform of the current signal are well correlated with the series fault.

TL;DR: In this article, a dynamic electrical model for a plane-parallel configuration homogeneous dielectric barrier discharge (DBD) is investigated using MATLAB Simulink, where the electrical model is based on an equivalent electric circuit, in which the DBD is represented by a voltage-controlled current source associated to a resistance and a capacitance value.