Results 61 to 70 of about 309,411 (142)

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

The effect of multiple lightning impulse on the electrical characteristic of opto-isolator as lightning protective devices [PDF]

, 2008
The behavior and performance of surge protective devices such as optoisolator under the application of multiple lightning voltage impulse are different from the single lightning voltage impulse test.
Sidik @ Mat Sidek, Ahmad
core  

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

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

Digital measurement of lightning impulse parameters using curving fitting algorithms [PDF]

, 1999
This paper describes the application of curve fitting algorithms to aid the evaluation of lightning impulse parameters. A number of popular curve fitting algorithms have been evaluated and compared.
Blackett, J., Ryan, H. M., Wong, K. C. P., Tindle, J., Watts, M. W., K.C.P. Wong   +5 more
core   +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

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

On the classification of self-triggered versus other-triggered lightning flashes [PDF]

, 2018
We present in this paper lightning current measurements and LMA (Lightning Mapping Array) data associated with upward flashes observed at the Sàntis Tower during Summer 2017.
Sunjerga, A., A. Mostajabi, Rubinstein, Marcos, Rubinstein, M., D. Romero, Rachidi, Farhad, G. Diendorfer, J. Montanya, Sunjerga, Antonio, N. Pineda, O. A. Van der Velde, M. Rubinstein, Montanya, Joan, Diendorfer, Gergard, Romero Durán, David, Van der Velde, Oscar Arnoud, Azadifar, M., Pineda, Nicolau, Romero, David, Mostajabi, A., F. Rachidi, M. Azadifar, Pineda Rüegg, Nicolau, Van der Velde, Oscar, Mostajabi, Amirhossein, Azadifar, Mohammad, Diendorfer, Gerhard, A. Sunjerga   +27 more
core   +1 more source

Study on the Power‐Frequency Arc Extinction Characteristics of Semi‐Closed Short‐Gap Device

High Voltage, EarlyView.
ABSTRACT Multi‐chamber arc‐extinguishing devices have a simple structure and excellent arc‐extinguishing performance; thus, they have attracted considerable attention as lightning protection devices. However, the structural parameters of different models of the aforementioned devices vary, leading to inconsistent protection levels; therefore, the arc ...
Yeqiang Deng, Caiwei Pan, Jintian Chen, Yu Wang, Lei Lan   +4 more
wiley   +1 more source

Smart CMOS image sensor for lightning detection and imaging [PDF]

, 2013
We present a CMOS image sensor dedicated to lightning detection and imaging. The detector has been designed to evaluate the potentiality of an on-chip lightning detection solution based on a smart sensor.
Goiffon, Vincent, Rolando, Sébastien, Molina, Romain, Guiry, Saïprasad, Tulet, Michel, Corbière, Franck, Larnaudie, Franck, Bréart-de-Boisanger, Michel, Leone, Bruno, Perez-Cuevas, Leticia, Saint-Pé, Olivier, Magnan, Pierre, Zayer, Igor   +12 more
core   +1 more source