Design of fault arc on-line detecting system based on labwindows/CVI;

In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics of fault arc,and extracted the sound signature of early fault arc by using power spectrum analysis.

This paper introduces the dangers caused by internal fault arc in GIS and discusses the mechanism of metal tank burning through and exploding, then proposes the improvement in design.

Early detecting of fault arcs using Lyapunov exponents;

Exact digital simulation and calculation of fault arcs;

In switch tank,fault arcs are constant and disastrous trouble.

The present status of research and development of faults arc detection methods in switch cabinet were analyzed synthetically.

In order to reveal the inherent relation and regularity of early time arc sound and arcing faults,an all-purpose test system for detecting faults arc has been set up.

This paper mentioned a new method for the monitor system of arcing fault based on the characterization information of sound arc,arc and short-circuit current.

A new method for the monitoring system of arcing fault is therefore proposed.

In this paper, after detailed study of the variation of zero-sequence currents during arcing fault, the disadvantageous effects of arcing on the accuracy of fault line selection are listed.

Based on the previous achievements in arc modeling,this paper describes an ideal long arc volt- ampere characteristic and its equivalent circuit and presents a new method for locating arcing faults on HV long transmission lines with single- terminal voltage and current signals.