Concept

Lightning

Related publications (294)

On the use of data from distributed measurement systems for correlating voltage transients to lightning

Voltage transients are the main causes of complaints from medium-voltage customers. For this reason, utilities and independent authorities are focusing their attention on investigation techniques capable of providing information useful for classifying volt ...

2004

Nonuniform transmission tower model for lightning transient studies

Mario Paolone, José-Luis Bermudez

This paper presents a new approach to model a transmission tower for lightning performance studies. It consists of representing each part of the tower by equivalent vertical and/or horizontal transmission lines as required. While horizontal line parameters ...

2004

Lightning-Induced Voltages on Overhead Distribution Lines: Theoretical and Experimental Investigation of Related Problems and their Impact on Power Quality

Mario Paolone, Carlo Alberto Nucci

Recent power quality studies have been focused on the source-identification of voltage disturbances at distribution network busses. This paper describes a method aimed at correlating indirect-lightning events with power systems relay operations, associated ...

2004

Estimation of the statistical distributions of lightning current parameters at ground level from the data recorded by instrumented towers

Mario Paolone

This paper describes a procedure based on the Monte Carlo method to obtain the statistical distributions of lightning current parameters at ground level starting from those inferred from experimental data recorded by means of tall instrumented towers. As a ...

2004

Influence of surge arresters on the statistical evaluation of lightning performance of distribution lines

Mario Paolone

The statistical assessment of the lightning-performances of distribution lines must take into account the presence of protection devices such as surge arresters and shielding wire/neutral groundings. Indeed, the presence of those devices does modify the in ...

2004

Mitigation of Lightning-Induced Overvoltages in Medium Voltage Distribution Lines by Means of Periodical Grounding of Shielding Wires and of Surge Arresters: Modeling and Experimental Validation

Mario Paolone, Carlo Alberto Nucci, Emanuel Petrache

In this paper, we investigate the effect of periodically-grounded shielding wires and surge arresters on the attenuation of lightning-induced voltages. We discuss the adequacy of the commonly made simplification of assuming the shielding wire at ground pot ...

2004

A full radius gyrokinetic stability analysis for large aspect ratio finite-beta tokamaks

Laurent Villard, Paolo Angelino

Linear, fully gyrokinetic, full radius (global), large aspect ratio studies of Alfven-ion temperature gradient mode (AITG) or kinetic ballooning modes or beta-induced Alfven eigenmodes considering only "passing" species is presented. Effects hitherto compl ...

2004

Lightning currents and electromagnetic fields associated with return strokes to elevated strike objects

Lightning currents and electromagnetic fields associated with return strokes to elevated strike objects The aim of this thesis is the modeling of lightning return strokes impacting elevated strike objects such as towers. The theoretical and experimental wo ...

EPFL2003

Comparison of current characteristics of lightning strokes measured at the CN tower and at other elevated objects

Since 1991, a broadband, high-resolution current measurement system has captured the lightning current derivative at the Toronto CN Tower. In this paper, extensive statistics (1992-2001) of CN Tower lightning current waveform parameters (maximum steepness ...

2003

Influence of the height of an elevated strike object on the enhancement of lightning radiated fields

Mario Paolone, Marcos Rubinstein, Davide Pavanello, José-Luis Bermudez

We discuss in this paper the influence of the height of an elevated strike object on the magnitude of lightning radiated electric and magnetic fields. For the analysis, the transmission line (TL) return stroke model for the lightning channel is adopted and ...

2003

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