Results 51 to 60 of about 3,186 (226)
Multi-scale Residual Transformer for VLF Lightning Transients Classification [PDF]
arXiv, 2023 The utilization of Very Low Frequency (VLF) electromagnetic signals in navigation systems is widespread. However, the non-stationary behavior of lightning signals can affect VLF electromagnetic signal transmission. Accurately classifying lightning signals is important for reducing interference and noise in VLF, thereby improving the reliability and ...
arxiv
Kalman Filter and Wavelet Cross-correlation for VHF Broadband Interferometer Lightning Mapping [PDF]
, 2020 A lightning mapping system based on perpendicular crossed baseline interferometer (ITF) technology has been developed rapidly in recent years. Several processing methods have been proposed to estimate the temporal location and spatial map of lightning strikes.
arxiv +1 more source
Computational and experimental mapping of the allosteric network of two manganese ABC transporters
Protein Science, Volume 34, Issue 2, February 2025.Abstract Transition metals (e.g., Fe2/3+, Zn2+, Mn2+) are essential enzymatic cofactors in all organisms. Their environmental scarcity led to the evolution of high‐affinity uptake systems. Our research focuses on two bacterial manganese ABC importers, Streptococcus pneumoniae PsaBC and Bacillus anthracis MntBC, both critical for virulence.
Ozge Duman +9 more
wiley +1 more source
Retrospective Observation of Ball Lightning [PDF]
arXiv, 2022 Ball lightning is a very rarely observed phenomenon that makes it extremely difficult to characterize scientifically. Eye-witness accounts of ball lightning that describe many features in common have been variously recorded for centuries. This note is an account of my observation of ball lightning almost five decades ago.
arxiv
Mechanism and suppression of breaking overvoltage of DC circuit breakers
High Voltage, Volume 10, Issue 1, Page 32-46, February 2025.Abstract The occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and formulates a fault protection strategy.
Lu Qu +7 more
wiley +1 more source
Lightning protection measures of inlet line of a mining area substation and its simulation analysis
Gong-kuang zidonghua, 2014 The paper introduced some basic situations of lightning protection measures of inlet line of a mining area 110 kV substation, analyzed causes of lightning strike of 35 kV inlet line of the substation, namely line insulation level increased by people is ...
TONG Nian +4 more
doaj +1 more source
High Voltage, Volume 10, Issue 1, Page 78-87, February 2025.Abstract Metal oxide varistors (MOVs) are extensively employed in DC circuit breakers (DCCBs) to suppress overvoltage, dissipate energy and build up voltage after interruption. Despite their widespread use, the performance of MOVs under short‐time, double energy absorption conditions is not well understood, posing a challenge to their application in ...
Chen Long +5 more
wiley +1 more source
STUDY ON SURGE ARRESTER PERFORMANCE DUE TO LIGHTNING STROKE IN 20 KV DISTRIBUTION LINES
Teknik, 2012 Electric energy has been transmiting from power station to end user with transmission and distribution lines.Lightning strokes are problems that occure in transmission and distribution lines and make them fault when theelectric energy were transmited ...
Agung Warsito +2 more
doaj
Aerodynamically generated noise by lightning arrester [PDF]
Applied and Computational Mechanics, 2007 This paper presents the general solution of aerodynamically generated noise by lightning arrester. Governing equations are presented in form of Lighthill acoustic analogy, as embodied in the Ffowcs Williams-Hawkings (FW-H) equation.
Váchová J.
doaj
An Investigation of the Factors Affecting the Transition of Lightning Surges through Underground Cables and Sub-Transmission Substations: A case study [PDF]
arXiv, 2019 Lightning is a natural phenomenon that takes place all around the world. The enormous amount of energy released by lightning is extremely ruinous, so some suitable protection schemes are required for power systems to minimize its destructive effects.
arxiv