It is well known that series arc faults in Low Voltage DC (LVDC) distribution system occur at unintended points of discontinuity within an electrical circuit. These faults can make circuit breakers not respond timely due to low fault current. It, therefore, is needed to detect the series fault for protecting circuits from electrical fires. This paper proposes a novel scheme to detect the series...

Thompson, Charles A. MSEE, Purdue University, May 1992. A Study of Numerical Intjegration Techniques for use in the Companion Circuit Mcthod of Tr,lnsicn~ Circuit Analysis. Major Professor: Gerald T. Heydt. Circuit transient analysis packages such as SPICE and EMTP are very widely used, but detailed information on the internal structure and error chal-acteristics for these software packages is ...

In the present paper simulations of the lightning overvoltages propagation phenomenon in a typical 420 kV SF6 GIS substations are presented. A new overvoltage mitigating passive device in a form of a high-voltage L-C filter is proposed. A process of its development and research is explained along with a simulation results. As demonstrated, the proposed device can be used in HV networks as an al...

Happening of Ferroresonance phenomenon is one of the reasons of consuming and ruining transformers, so recognition of Ferroresonance phenomenon has a special importance. A novel method for classification of Ferroresonance presented in this paper. Using this method Ferroresonance can be discriminate from other transients such as capacitor switching, load switching, transformer switching. Wavelet...

This paper studies the issues of apparent fault loop impedance seen by distance relays protecting a series compensated line with Series Capacitors (SCs) and their Metal-Oxide Varistors (MOVs) installed in the middle of the line. In this paper, SCs&MOVs schemes are equivalented for the fundamental frequency and taken into account in the measurement of the fault loop impedance. Two different appr...

This paper presents a new method for power systems performance optimization using Electromagnetic Transients Simulation. In this method, an emtp-type program (PSCAD/EMTDC) becomes the inner objective function calculation loop of a non-linear optimization program. The procedure is conducted in a Graphical Environment and with the use of specially designed blocks, allows for the selection of any ...