Results 71 to 80 of about 298,299 (227)
A fractal model for the lightning induced current on a transmission line [PDF]
, 1997 This article presents a model of a tortuous lightning channel, and a study of the consequent electromagnetic coupling to a transmission line. We analyse the fractal dimension of the induced current on the line, compared with the fractal dimension of the ...
Vecchi, Giuseppe +6 more
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Impulse ageing of polymeric materials
, 2011 Impulse over-voltage is a common phenomenon in electric power systems. A switching impulse is created by a switching surge or local fault while a lightning impulse is due to direct lightning strike to high voltage plant such as an overhead line.
Dao, Ngoc Long
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Results in EngineeringThe impulse grounding resistance is a critical parameter for evaluating performance of lightning protection devices, and effectively reducing this resistance remains a major challenge in lightning protection or electrical engineering. While most previous
Juan Zhang +6 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT The direct effects of lightning strikes on forest combustibles form the foundation for predicting lightning‐induced forest fires. Accurate assessment of lightning impact is hindered by limited knowledge of the conduction characteristics of standing larch trees.
Jinru Sun +5 more
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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 +6 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
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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 +4 more
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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 +2 more
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Barbara's Daughters: Women's Boxing and Social Memory in Britain
History, EarlyView.Abstract A pioneer of post‐war boxing, Barbara Buttrick fought in fairgrounds and on music‐hall stages in Britain and France before making a career in the United States during the 1950s. She fought against practical obstacles, prejudice and discrimination to become the Women's World Flyweight and Bantamweight Champion in 1957. This article examines her
Matthew Taylor
wiley +1 more source
Can Enterprises Invest Efficiently in Smart Cities?
Accounting &Finance, EarlyView.ABSTRACT The rapid expansion of the digital economy has accelerated smart city (SC) development in China. Using a time‐varying difference‐in‐differences approach, we examine the impact of SC policies on corporate investment efficiency. We document that SC construction significantly enhances investment efficiency, with robust results across multiple ...
Jingmiao Li +3 more
wiley +1 more source