Results 151 to 160 of about 19,790 (306)
Colombian Total Lightning Detection Network and early detection of failure risk for power systems [PDF]
, 2013 This paper presents the deployment of a new total lightning detection network in Colombia. Historic data from 2011 to 2012 are used to reevaluate the lightning parameters such as ground flash density, multiplicity, polarity and others.
ARANGUREN, HARBY DANIEL
core
High Voltage, EarlyView.ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang +4 more
wiley +1 more source
Cloud-to-Ground Lightning Nowcasting from Remote Sensing and Numerical Weather Prediction Modeling Data [PDF]
In this paper a multidisciplinary approach to develop a regression algorithm to nowcast cloud-to-ground lightning activity one hour in advance is presented.
La Fata A. +5 more
core
PowerGPT‐R1: Vision‐Language Reinforcement Fine‐Tuning With Verifiable Reward for Power Inspection
High Voltage, EarlyView.ABSTRACT Vision‐driven intelligent power inspection systems have long faced the challenge of scarce high‐quality datasets in specialised domains, leading to limited performance of traditional deep learning methods (e.g., Faster‐RCNN) in few‐shot learning scenarios. Recent breakthroughs in language models, particularly the open‐source DeepSeek‐R1 model,
Yangyang Zhong +12 more
wiley +1 more source
工程科学与技术This article proposes a method for detecting and determining the lightning overvoltage damage in communication interfaces of high-speed railway signal equipment, which is an optimization and improvement of the current lightning test and detection methods
Zhoulong WANG +3 more
doaj
High Voltage, EarlyView.ABSTRACT High voltage equipment, as a core component of power systems, plays an indispensable role in ensuring the reliability of power supply through its safe and stable operation. Traditional visual defect detection for high voltage equipment, however, often relies on manual inspection and experience‐based judgement, which struggles to meet the ...
Zhenbing Zhao +7 more
wiley +1 more source
Detection of lightning in Saturn's Northern Hemisphere
, 2012 During Cassini flyby of Saturn at a radial distance 6.18R_s (Saturn Radius), a signal was detected from about 200 to 430 Hz that had the proper dispersion characteristics to be a whistler. The frequency-time dispersion of the whistler was found to be 81 Hz1/2s.
openaire +2 more sources
FDTD simulations of lightning strikes to the Gaisberg Tower: Comparison with ALDIS sensor measurements and evaluation of the Gaisberg radiation pattern [PDF]
In this paper, lightning electromagnetic (EM) fields radiated by a lightning strike to the Gaisberg Tower in Salzburg, Austria, and propagating over irregular terrain are calculated using a 3D finite-difference time-domain (FDTD) method. With topographic
Kohlmann, Hannes +2 more
core
Observations of the relationship between sprite morphology and in-cloud lightning processes [PDF]
[1] During a thunderstorm on 23 July 2003, 15 sprites were captured by a LLTV camera mounted at the observatory on Pic du Midi in the French Pyrénées.
Van der Velde, Oscar Arnoud +5 more
core
BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.ABSTRACT Objective To evaluate the performance of DNA methylation markers for the detection of cervical precancer among screening‐positive older women without a fully visible transformation zone at colposcopy (TZ3). Design Cross‐sectional study. Setting Colposcopy clinics, Central Denmark Region, 2019–2021.
Karen Omann Binderup +10 more
wiley +1 more source