Results 41 to 50 of about 77,859 (296)

Lightning current detector [PDF]

, 1978
An apparatus for measuring the intensity of current produced in an elongated electrical conductive member by a lightning strike for determining the intensity of the lightning strike is presented.
Livermore, S. F.
core   +1 more source

Frequency‐Domain Subspace Identification for Noninvasive Transformer Winding Parameter Estimation and Fault Diagnostics

International Journal of Circuit Theory and Applications, EarlyView.
Noninvasive frequency‐domain method estimates transformer winding parameters from terminal measurements, eliminating the need for design data. ABSTRACT A novel frequency‐domain subspace identification method enables precise estimation of transformer winding ladder network parameters directly from terminal measurements.
K. Lakshmi Prasanna, Manoj Samal, Mithun Mondal, Palash Mishra   +3 more
wiley   +1 more source

Research on Resonance Overvoltage of EHV Transmission Lines Caused by Lightning Strike

IEEE Access, 2021
This paper studies the mechanism and influencing factors of resonance overvoltage of EHV transmission lines caused by lightning. By analyzing the time domain steady state of the simplified resonance circuit, the physical mechanism of resonance is ...
Xiao Lei, Tao Cui, Xiaohui Wu, Hong Zeng, Qiang Liu, Linhuan Li   +5 more
doaj   +1 more source

AI‐Driven Optimization Techniques for Power Quality Improvement in Microgrids: Trends, Techniques, and Future Directions

Energy Science &Engineering, EarlyView.
Decentralized energy systems are gaining momentum, and microgrids have become a vital component of the modern power landscape. Yet, maintaining power quality within these systems presents ongoing challenges due to the presence of nonlinear loads, variable renewable energy sources, and frequent switching operations.
Mahnoor Zahid, Hafiz Mudassir Munir, Mohammad Adeel, Fares Suliaman Alromithy, Mohammad R. Altimania, Ievgen Zaitsev   +5 more
wiley   +1 more source

Extreme wildfire conditions shift coastal phytoplankton community structure in California

Limnology and Oceanography, EarlyView.
Abstract Extreme wildfires have increased in frequency and intensity globally, particularly in the Western United States. Here we examine how the 2020 Lightning Complex Fires in California influenced coastal phytoplankton communities using monitoring network data products in the Monterey Bay, the ocean region closest to this large fire.
Dante Capone, Patrick Daniel, Raphael Kudela, Andrew D. Barton, Mati Kahru, Moira Décima   +5 more
wiley   +1 more source

Research on Line Patrol Strategy of 110kV Transmission Line after Lightning Strike

MATEC Web of Conferences, 2016
Lightning faults occupy in the majority of instantaneous fault and reclosing can usually be successful, so power supply can be restored without immediate patrol in many cases. Firstly, this paper introduces the lightning fault positioning and identifying
Li Mingjun, Song Kunyu, Ou Yuqiang, Gan Tuanjie, Fan Yazhou, Chen Jianping   +5 more
doaj   +1 more source

Impact of the COVID‐19 Pandemic on Cochlear Implant Usage in Children

Otolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective To evaluate the impact of the COVID‐19 pandemic on cochlear implant (CI) usage in children by comparing hearing hour percentage (HHP) during the pandemic to prepandemic levels. Study Design Retrospective Cohort Study. Setting Primary Children's Hospital, Utah.
Peter Kfoury, Kathryn Tonkovich, Eun Kyung Jeon, Jordan C. Stout, Hannah Christensen, Megna D. Reddy, Matthew A. Firpo, Albert H. Park   +7 more
wiley   +1 more source

Lightning Protection Methods for Wind Turbine Blades: An Alternative Approach

Applied Sciences, 2020
Lightning strikes happens in a fraction of time, where they can transfer huge amounts of charge and high currents in a single strike. The chances for a structure to be struck by lightning increases as the height increases; thus, tall structures are more ...
Viktor Mucsi, Ahmad Syahrir Ayub, Firdaus Muhammad-Sukki, Muhammad Zulkipli, Mohd Nabil Muhtazaruddin, Ahmad Shakir Mohd Saudi, Jorge Alfredo Ardila-Rey   +6 more
doaj   +1 more source

Compositional Acclimation Can Lessen Tropical Forest Change in Response to Increasing Lightning Frequency: Insights From Simulation Modeling. [PDF]

Glob Chang Biol
Lightning is a major agent of forest tree mortality. In this study, we investigated how changes in lightning frequency affect forest biomass. Our approach was to implement lightning into a forest dynamics model. The probability of lightning‐induced mortality varied by species according to field observations.
Medvigy D, Gora EM, Yanoviak SP.
europepmc   +2 more sources

The missing woodland story: Implications of 1700 years of stand‐scale change on ‘naturalness’ and managing remnant broadleaved woodlands

People and Nature, EarlyView.
Abstract Longer‐term perspectives—equivalent to the lifespans of long‐lived trees—are required to fully inform perceptions of ‘naturalness’ used in woodland conservation and management. Stand‐scale dynamics of an old growth temperate woodland are reconstructed using palaeoecological data.
Annabel Everard, J. Edward Schofield, Tim Mighall, Scott Timpany, Gill Plunkett   +4 more
wiley   +1 more source