The Horn Gap Arresters Modelling in a Lightning Discharge Analysis

2017 ◽  
pp. 289-303
Author(s):  
Zofia Wróbel
Keyword(s):  
Lightning Discharge

Repulsion effect in orientation of “lightning” discharge

1992 ◽  
Vol 2 (7) ◽  
pp. 1359-1365 ◽  
Author(s):  
E. N. Chernov ◽  
A. V. Lupeiko ◽  
N. I. Petrov
Keyword(s):  
Lightning Discharge ◽  
Repulsion Effect

Isolated Large Bipolar Pulse (ILBP) Produced by Lightning Discharge in Winter Thunderstorm

2013 ◽  
Vol 133 (9) ◽  
pp. 451-457
Author(s):  
Ting Wu ◽  
Yuji Takayanagi ◽  
Tsuyoshi Funaki ◽  
Satoru Yoshida ◽  
Tomoo Ushio ◽  
...  
Keyword(s):  
Lightning Discharge ◽  
Bipolar Pulse

scholarly journals Progressive lightning IV-The discharge mechanism

1938 ◽  
Vol 164 (916) ◽  
pp. 132-150 ◽  
Keyword(s):  
Lightning Discharge ◽  
Discharge Mechanism

In three previous papers (Schonland and Collens 1934; Schonland, Malan and Collens 1935; Malan and Collens 1937) in this series the writer and his collaborators have described the results of a study of the lightning discharge to ground by means of the Boys and other cameras. During the last two years these studies have been continued with improved instruments, and the electrical changes taking place during the discharge have been examined by means of a cathode-ray oscillograph. An account of some important results obtained by the latter method has recently been published by Appleton and Chapman (1937). These are confirmed and extended by our own later investigations. With this fuller information it is now possible to put forward some deductions as to the discharge mechanism.

scholarly journals On the field-to-current conversion factors for large bipolar lightning discharge events in winter thunderstorms in Japan

2015 ◽  
Vol 120 (14) ◽  
pp. 6898-6907 ◽  
Author(s):  
Long Chen ◽  
Qilin Zhang ◽  
Wenhao Hou ◽  
Yulang Tao
Keyword(s):  
Lightning Discharge ◽  
Conversion Factors

Mathematical Modelling of Deciduous Tree Ignition by Ground Lightning Discharge Taking into Account Localization of Reactive Wood

2011 ◽  
Vol 6 (4) ◽  
pp. 95-106
Author(s):  
Nikolay Baranovskiy ◽  
Geniy Kuznetsov
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Mathematical Modelling ◽  
Lightning Discharge ◽  
Deciduous Tree ◽  
Tree Trunk ◽  
Mathematical Statement ◽  
Cylindrical System ◽  
Typical Range

Physical and mathematical statement and results of the numerical simulation of a problem about deciduous tree (birch) ignition by ground lightning discharge are presented. The problem is considered in flat statement in cylindrical system of coordinates. Heat transfer features taking into account localization of reactive wood are considered. The parametrical analysis is carried out and conditions of tree trunk ignition in a typical range of parameters of influence of positive discharges are obtained

Study of the influence of overvoltage on the quality of electricity in energy systems.

2020 ◽  
Vol 23 (2) ◽  
pp. 52-58
Author(s):  
S. SKRYPNYK ◽  
Keyword(s):  
Power Supply ◽  
Fire Hazard ◽  
Lightning Discharge ◽  
Quality Standard ◽  
Normal Operation ◽  
Electrical Network ◽  
Modern World ◽  
Electrical Networks ◽  
The World

Our world with its high technologies has long been deeply dependent on the quality of electricity supply. In most countries of the world there are national power grids that combine the entire set of generating capacity and loads. This network provides the operation of household appliances, lighting, heating, refrigeration, air conditioning and transport, as well as the functioning of the state apparatus, industry, finance, trade, health services and utilities across the country. Without this utility, namely electricity, the modern world simply could not live at its current pace. Sophisticated technological improvements are firmly rooted in our lives and workplaces, and with the advent of e-commerce began the process of continuous transformation of the way individuals interact with the rest of the world. But with the achievement of intelligent technologies, an uninterrupted power supply is required, the parameters of which exactly meet the established standards. These standards maintain our energy security and create a reliable power system, that is maintaining the system in a trouble-free state. Overvoltage is the deviation of the rated voltage from the value of the corresponding quality standard (frequency, sinusoidal voltage and compliance of harmonics). Overvoltage in terms of fire hazard is one of the most dangerous emergency modes of electrical equipment, which causes conditions that in most cases are sufficient for the occurrence of fire hazards (exceeding the allowable voltage leads to disruption of normal operation or possible ignition). Against the background of deteriorating engineering systems, increased power consumption and poor maintenance, power supply of electrical installations, the main causes of overvoltage in electrical networks are thunderstorms (atmospheric overvoltage), switching switches, uneven phase load in electrical networks, etc. The physical picture of internal overvoltage is due to oscillatory transients from the initial to the established voltage distributions in the conductive sections due to the different situation in the electrical circuit. In the conditions of operation of electric networks planned, mode or emergency situations are possible. Therefore, the ranges of overvoltage are determined by the range from several hundred volts to tens and hundreds of kilovolts, and depend on the types of overvoltage. Atmospheric overvoltage is considered to be one of the most dangerous types of emergency modes of operation of the electrical network. This overvoltage occurs as a result of lightning discharge during precipitation by concentrating electricity on the surface of the object, the introduction of potential through engineering networks and

Shock Waves from a Lightning Discharge

2018 ◽  
Author(s):  
Christian Karch ◽  
Manfred Schreiner ◽  
Robert Honke ◽  
Johannes Wolfrum
Keyword(s):  
Shock Waves ◽  
Lightning Discharge

scholarly journals The effect of subionospheric propagation on whistlers recorded by the DEMETER satellite – observation and modelling

2007 ◽  
Vol 25 (5) ◽  
pp. 1103-1112 ◽  
Author(s):  
O. E. Ferencz ◽  
Cs. Ferencz ◽  
P. Steinbach ◽  
J. Lichtenberger ◽  
D. Hamar ◽  
...  
Keyword(s):  
Ionospheric Plasma ◽  
Lightning Discharge ◽  
Wide Band ◽  
Satellite Observation ◽  
Guided Wave ◽  
Propagation Characteristics ◽  
Wave Modelling ◽  
Full Wave ◽  
Demeter Satellite ◽  
Guided Wave Propagation

Abstract. During a routine analysis of whistlers on the wide-band VLF recording of the DEMETER satellite, a specific signal structure of numerous fractional-hop whistlers, termed the "Spiky Whistler" (SpW) was identified. These signals appear to be composed of a conventional whistler combined by the compound mode-patterns of guided wave propagation, suggesting a whistler excited by a lightning "tweek" spheric. Rigorous, full-wave modelling of tweeks, formed by the long subionospheric guided spheric propagation and of the impulse propagation across an arbitrarily inhomogeneous ionosphere, gave an accurate description of the SpW signals. The electromagnetic impulses excited by vertical, preferably CG lightning discharge, exhibited the effects of guided behaviour and of the dispersive ionospheric plasma along their paths. This modelling and interpretation provides a consistent way to determine the generation and propagation characteristics of the recorded SpW signals, as well as to describe the traversed medium.

scholarly journals A lightning discharge producing a beam of relativistic electrons into space

2010 ◽  
Vol 37 (18) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. B. Cohen ◽  
U. S. Inan ◽  
R. K. Said ◽  
M. S. Briggs ◽  
G. J. Fishman ◽  
...  
Keyword(s):  
Lightning Discharge ◽  
Relativistic Electrons
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