Topic
Lightning
About: Lightning is a research topic. Over the lifetime, 15150 publications have been published within this topic receiving 180556 citations.
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15 Feb 2017
TL;DR: In this paper, the authors proposed a rocking bridge system with a guidance rod installed on top of a pillar and a ground wire disconnected from the guidance rod and grounded into the ground through the pillar.
Abstract: The present invention relates to a rocking bridge system having a function for preventing lightning to prevent accidents caused by lightning. In other words, the rocking bridge system according to the present invention comprises: a lightning guidance rod prepared on top of a pillar; and a ground wire disconnected to the lightning guidance rod and grounded into the ground through the pillar. Thus, the present invention may prevent accidents caused by lightning through the lightning guidance rod installed on top of the pillar and the ground wire grounded into the ground through the pillar.
2 citations
12 Jun 2019
TL;DR: In this article, an online overvoltage monitoring system was used to monitor phase conductor overvoltages of distribution lines, including lightning, internal and electromagnetic transient on 10 kV distribution line in Foshan, China.
Abstract: Lightning induced overvoltage is an important cause of fault in distribution network, and it is also the culprit of electrical equipment damage. The former research mode about overvoltage of distribution lines is mainly using shrinkage model or simulation calculation, and lack of measured results as evidence. The On-line overvoltage monitoring system was used to monitor phase conductor overvoltage of distribution lines, including lightning overvoltage, internal overvoltage and electromagnetic transient on 10 kV distribution line in Foshan, the system recorded 61 lightning overvoltage records in 2016 on the 10kV Maning Line, and the number of return strokes was up to 17 times. The average positive peak value is about 5 kV, while the negative peak value is slightly smaller than the positive peak value. Whether positive or negative, the overvoltage amplitude of phase B is always the lowest and that of phase A is always the highest. The average 10%-90% rise time is about 5 μs and the average duration time is about 10 μs. The peak value of measured induced overvoltage is much lower than that calculated by the Rusck's model.
2 citations
01 Apr 2020
TL;DR: In this article, a cloud-to-ground (CG) lightning intensity time series recorded in northern Benin, during days of monsoon season (summer 2006), has been deeply explored using multifractal framework.
Abstract: Cloud-to-Ground (CG) lightning intensity time series recorded in northern Benin, during days of monsoon season (summer 2006), has been deeply explored using multifractal framework. The results suggest the existence of strong multifractal characteristics in lightning intensity. However, detrending the data reduces the degree of multifractality. The multifractality arises from both a fat-tailed probability density function and long-range temporal correlations. But, the most dominant multifractality in lightning intensity series depends strongly on the kind of detrending that is retained from the profile during the multifractal detrended fluctuation analysis (MFDFA). These findings have allowed us to understand and characterize the complexity of lightning intensity structure in the network.
2 citations
TL;DR: In this article, the authors used meteorological models with the goal of making forecasts of lightning flash, which is a recent topic of research that has gained increasing interest in the scientific community, and the current mesoscale numerical models can run with high-space and time resolutions and explicitly represent individual convective storms and their microphysical properties.
Abstract: Identifying in advance and with reliability favorable atmospheric conditions for lightning occurrence is necessary to minimize injuries and hazardous situations. Different approaches based on empirical and/or statistical methods have been used to forecast lightning occurrence (Shafer and Fuelberg 2008); however, the results in general have serious limitations. In turn, the use of meteorological models with the goal of making forecasts of lightning flash is a recent topic of research that has gained increasing interest in the scientific community. With the advance of the computational capability, the current mesoscale numerical models can run with high-space and time resolutions and explicitly represent individual convective storms and their microphysical properties, although some simplifications are necessary due to the complex electrical processes associated with thunderstorm electrification and lightning initiation (Barthe and Pinty 2007).
2 citations
TL;DR: In this paper, a study of spatial-temporal distribution of lightning discharges on the territory of Kazakhstan based on Worldwide Lightning Location Network (WWLLN) data was done for the first time.
Abstract: Introduction Specialists in many areas face the problem of lightning protection and assessment of spatial distribution of lightning discharges. The number of high buildings and site development increases; combustible and explosive substances are widely used in the industry; sensitive electronic devices which react to the interferences caused by lightning discharges are using more and more often in electronics and communication. As a result, damages, caused by lightning discharges, business interruption might take place and in some cases can be fatal. Abstract In this article, the study of spatial-temporal distribution of lightning discharges on the territory of Kazakhstan based on Worldwide Lightning Location Network (WWLLN) data was done for the first time. The results of monthly, daily and hourly temporary distribution of lightning activity are obtained. Density distribution of the lightning, durations of thunderstorms, spatial development of lightning activity are presented. WWLLN efficiency for the Kazakhstan area is discussed. The research was executed within the framework of “Creation of Kazakhstan Lightning Detection Network” project. ARTICLE HISTORY
2 citations