Hydrogen or mixtures containing hydrogen represent attractive gases for low-voltage switching devices because of increased arc quenching behaviour. However, fundamental electrical properties arcs in are still not well known. In this paper, first results a study DC pure at 1 bar between graphite electrodes presented low currents 8 and 16 A. The voltage current measured during contact separation....

This article presents a new method for effective detection of ac series arc fault (AF) (SAF) and extraction SAF characteristics in residential buildings, which addresses the challenges with conventional current methods discriminating arcing nonarcing due to their similarity. Different from traditional method, proposed differential magnetic flux is coupled obtain high-frequency signals by puttin...

The circular arc coloring problem is to find a minimum coloring of a set of arcs of a circle so that no two overlapping arcs share a color. This N P-hard problem arises in a rich variety of applications and has been studied extensively. In this paper we present an O(n2m) combinatorial algorithm for optimally coloring any set of arcs that corresponds to a perfect graph, and propose a new approac...