Results 51 to 60 of about 3,083 (217)

Variation of lightning impulse current wave shape.

, 2019
Variation of lightning impulse current wave shape.
M. A. M. Radzi (4452457), M. Izadi (6944879), N. H. Zaini (6944885), M. Z. A. Ab-Kadir (6944876), N. I. Ahmad (6944882), M. S. M. Nasir (6944873)   +5 more
core   +1 more source

Comparison of Dielectric Recovery After Arc Burning in SF6 Gas and Its Potential Alternatives

High Voltage, EarlyView.
ABSTRACT Although sulphur hexafluoride (SF6) exhibits exceptional insulating properties, it is a potent greenhouse gas. Therefore, studying alternatives to SF6 is critical for developing environmentally friendly high‐voltage electrical equipment.
Ziqi Liu, Hao Sun, Yi Wu, Mingzhe Rong, Zeyuan Luo   +4 more
wiley   +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

Impact of Electrode Distance in a Quasi-Uniform Model Electrode System on Lightning Impulse Breakdown Voltage in Various Insulating Liquids

Energies
This study presents findings on the influence of gap length distance on the lightning impulse breakdown voltage of three dielectric liquids of different chemical origins.
Wiktor Kunikowski, Pawel Rozga, Bartlomiej Pasternak, Jakub Staniewski, Filip Stuchala, Konrad Strzelecki   +5 more
doaj   +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

Análise do desempenho de redes aéreas de distribuição de média tensão frente à ação das descargas atmosféricas [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2010O principal objetivo deste trabalho é contribuir para a melhoria do desempenho das redes aéreas de ...
Coelho, Vilson Luiz
core  

Application Status and Development Trends of DC Ice‐Melting Devices in China's Power Grid

IET Smart Energy Systems, EarlyView.
This paper summarises the development history and engineering application status of DC ice‐melting devices (DCIMD) in China, analyses the principles, advantages, disadvantages and adaptability of mainstream topologies and discusses the key problems and corresponding improvement directions.
Ming Lei, Tianlong Zhang, Zhenglin Li, Jian Wang, Tao Zhang, Peng Wang, Ruiqi Zhan   +6 more
wiley   +1 more source

CALCULATION AND EXPERIMENTAL ESTIMATION OF RESULTS OF ELECTRO-THERMAL ACTION OF RATIONED BY THE INTERNATIONAL STANDARD IEC 62305-1-2010 IMPULSE CURRENT OF SHORT BLOW OF ARTIFICIAL LIGHTNING ON THE THIN-WALLED COVERAGE FROM STAINLESS STEEL

Electrical engineering & Electromechanics, 2017
Purpose. Calculation and experimental researches of electro-thermal resistibility of the pre-production thin-walled sheet models of outward roof of height technical buildings from stainless steel are easily soiled 12Х18Н10Т to direct action on them ...
M. I. Baranov, V. V. Kniaziev, S. V. Rudakov   +2 more
doaj   +1 more source

It Takes Two to Tango: A Pluralist Account for Building Comprehensive Explanations in Human Evolution

American Anthropologist, EarlyView.
ABSTRACT The evolutionary study of human dispersal is a key topic in biological anthropology. However, recent research has revealed inconsistencies between molecular and anatomical data across different timescales and geographic regions. Despite increased interdisciplinary dialogue, these discordances are rarely analyzed in depth or interpreted for ...
Lumila Paula Menéndez, Sophie Veigl
wiley   +1 more source

Laboratory demonstration of lightning strike pattern on different roof tops installed with Franklin Rods

EPJ Web of Conferences, 2017
Protection against lightning is always a challenging job for the researcher. The consequences due to lightning on different building shapes needs a comprehensive knowledge in order to provide the information to the common man.
Ullah Irshad, Baharom MNR, Ahmed H., Luqman HM., Zainal Zainab   +4 more
doaj   +1 more source