Results 121 to 130 of about 19,525,180 (293)

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

High Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li, Jiangling Zhi, Yu Wang, Hantao Tao, Zhaoming Li, Shanqiang Gu, Zhe Li, Zeyu Zhang, Lei Zhang, Guoying Tang   +9 more
wiley   +1 more source

Analysis of Ten-Year Variations of Lightning Activity in Italy and Correlation with Land and Sea Surface Temperatures

Applied Sciences
This study investigates the evolution of lightning activity in Italy by comparing two biennia: 2010–2011 and 2020–2021. Lightning data were obtained from a lightning location system (the SIRF network) and processed to focus exclusively on cloud-to-ground
Martino Nicora, Rodolfo Antonio Ribeiro Moura, Marina Bernardi, Daniele Mestriner, Elisabetta Fiori   +4 more
doaj   +1 more source

Implementation of Lightning Location System LINET in Croatian Transmission Network

, 2011
Krajem 2008. godine u Hrvatskoj je uspostavljen Sustav za lociranje mjesta udara munja kao dio europskog sustava LINET. Sustav za lociranje munja predstavlja programsku podršku za arhiviranje i primjenu podataka sustava LINET o udarima munja na području ...
Piliškić, Silvia
core  

Investigation of the Evolution Mechanism and Multiphysics Coupling in Tree‐Contact Single‐Phase‐to‐Ground Fault

High Voltage, EarlyView.
ABSTRACT Tree‐contact single‐phase‐to‐ground fault (TSF) is a common and hazardous type of failure in distribution networks. TSF is likely to occur when overhead conductors contact moist tree branches, potentially leading to insulation breakdown, posing serious threats to grid safety.
Wenjun Ning, Zuopeng Li, Mingxian Liu, Jianbo He, Tianxiang Chen, Shenli Jia   +5 more
wiley   +1 more source

The mesh method in lightning protection analyzed from a lightning attachment model

, 2016
Based on the well-known rolling sphere method, international standards recommend the location of the external lightning protection system of structures. The design of the external lightning protection system of structures of height of less than 60 m can ...
V. Cooray, Cooray, Vernon,, Arevalo, L.,, L. Arevalo   +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

High 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, Tao Cui, Zhengxi Wang, Tongwei Guo, Xiaohui Wu, Hong Zeng, Jie Guo, Yanzhao Xie   +7 more
wiley   +1 more source

Study on the Coupled Effects of High‐Speed Airflow and Charged Sand on Power‐Frequency Discharge Characteristics of Conductor–Tower Gaps in Strong Wind–Sand Environments

High Voltage, EarlyView.
ABSTRACT Strong wind–sand weather in Xinjiang threatens power grid safety by increasing transmission line tripping risks. Existing studies focus on sand polarization but neglect the coupled influence of high‐speed airflow and charged sand on gap discharge characteristics.
Jianghai Geng, Yang Wang, Ping Wang, Yang Lu, Songsong Zhou, Yujian Ding, Xiaojun Zhang, Wenbing Zhuang, Yu Su   +8 more
wiley   +1 more source

Evaluation Of Lightning Current Parameters Using Measured Lightning Induced Voltage On Distribution Power Lines

, 2019
In this paper, an algorithm had been proposed to evaluate the lightning current parameters using measured voltage from overhead distribution lines based on lightning location obtained from lightning location system. Moreover, the performance of algorithm
Mohd Zainal Abidin Ab Kadir, Osman M., Mahdi Izadi, Izadi M., Miszaina Osman, Kadir M.Z.A.A.   +5 more
core   +1 more source

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

High 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, Mingyang Qi, Rong Jia, Bo Wang, Leixiong Wang   +4 more
wiley   +1 more source

A quantitative risk assessment model for lightning-induced failures in natural gas automated metering systems

Petroleum
As one of the most probable natural hazards leading to technological disasters, lightning can easily damage analytical instruments in oil and gas stations, resulting in data loss and operational anomalies.
Xia Wu, Jiujiang Cai, Hanqing Liu, Wenlong Jia, Changjun Li, Mengjun Teng   +5 more
doaj   +1 more source