Results 131 to 140 of about 2,833,637 (301)

Quality Control Technique for Ground-Based Lightning Detection Data Based on Multi-Source Data over China

open access: yesRemote Sensing
Lightning is one of the most severe natural disasters, characterized by its sudden onset, short duration, and significant damage. Existing quality control (QC) schemes for millisecond-level lightning observation data from a single source are primarily ...
Yongfang Xu   +5 more
doaj   +1 more source

Extreme Values of Lightning Parameters

open access: yes
In this paper we present an online database where we have collected a number of reports on extreme lightning parameters: peak current, fastest and slowest rise time, fastest and slowest time to half value, rate of change of current, flash duration ...
Rachidi, Farhad   +2 more
core  

Lightning attachment to power transmission lines

open access: yes, 2012
The effect of lightning channel inclination on the attachment of lightning flashes to UHV transmission lines is investigated using a lightning strike model that takes into account the competing connecting leaders issued from different conductors.
Cooray, Vernon,   +3 more
core   +1 more source

Mechanism of Quasi‐Power‐Frequency Resonant Overvoltage Triggered by Multiple Lightning Strikes in High‐Voltage Alternating Current Systems Equipped With Shunt Reactor

open access: yesHigh Voltage, EarlyView.
ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang   +7 more
wiley   +1 more source

Refined Safety Distance Measurement of Heavy Construction Machinery Near Electricity Operation Based on Feature‐Homogenised Spatial Target Analysis

open access: yesHigh Voltage, EarlyView.
ABSTRACT Heavy construction machinery is essential for power infrastructure construction and maintenance, making safety distance measurement crucial for ensuring operational safety. Existing methods, which rely on target space mapping, face challenges such as error accumulation and limited accuracy.
Fuqi Ma   +4 more
wiley   +1 more source

Understanding lightning leaders [PDF]

open access: yes, 2016
a lightning flash is defined by the initiation and multiple development of leaders. But lightning leaders are still poorly understood. Since most of my atmospheric electricity has been focused on lightning that means that it has been devoted to ...
Montañá Puig, Juan
core   +2 more sources

Storm Structure and Lightning Characteristics of Tornado-hail-producing Supercell in Guangzhou on 27 April 2024

open access: yes应用气象学报
Due to the limited coverage of three-dimensional lightning detection networks, research on the total lightning characteristics of supercells that produce tornadoes and hail remains insufficient in China.
Wang Chenxi   +5 more
doaj   +1 more source

Correction of the Current Peak Estimates Provided by Lightning Detection Networks for Lightning Return Strokes to Tall Towers

open access: yes, 2008
The peak current estimation of lightning detection networks for strikes to tall towers is discussed in this work. Such systems tend to overestimate the return stroke current peak for strikes to electrically tall towers.
A. M. Hussein   +8 more
core  

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

open access: yesHigh Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang   +4 more
wiley   +1 more source

Comparison of FY-4A Satellite LMI Data and Ground-based Lightning Detection Data in Beijing-Tianjin-Hebei Region

open access: yes应用气象学报
Based on lightning groups detected by lightning mapping imager (LMI) of FY-4A meteorological satellite and lightning electromagnetic pulse (LEMP) detected by DDW1 sensors of national lightning detection system from April to August during 2021-2023 ...
Yao Huiru   +4 more
doaj   +1 more source

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