Results 61 to 70 of about 1,115 (202)

Design of Defect Identification and Location System for UHV AC Surge Arrester

open access: yesIEEE Access
Ultra high voltage (UHV) metal oxide arrester (MOA) is prone to problems such as resistance sheet aging and moisture exposure during long-term operation.
Dantian Zhong, Lei Gao, Zhiyuan Cai
doaj   +1 more source

Multi‐Scale Information Attention Network‐Based Lightweight Super‐Resolution Reconstruction For Infrared Images of Power Equipment

open access: yesIET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
In order to solve the problems of low resolution and blurred temperature distribution of infrared images of power equipment caused by hardware limitations, this paper proposes a lightweight super‐resolution method based on the MIA network. The reconstructed images have good subjective and objective results, and provide support for power system fault ...
Hongshan Zhao   +5 more
wiley   +1 more source

A Point Cloud Recognition Method for Substation Equipment Based on Improved Point Transformer

open access: yesThe Journal of Engineering, Volume 2025, Issue 1, January/December 2025.
A point cloud recognition method for substation equipment based on improved Point Transformer is proposed to address the issue of low accuracy in point cloud segmentation during multi‐target recognition. First, a new dot product and double random inter‐point attention mechanism embedding are created in the convolutional projection layer of the Point ...
Helei Liang   +3 more
wiley   +1 more source

ESTIMATION OF THE EFFECT OF VARIOUS METHODS AND DEVICES OF IMPULSE OVERVOLTAGE PROTECTION IN THE OIL FIELD ELECTRIC NETWORK 6–10 kV

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance. One of the main causes of high accident rate and outages in distributed power supply systems of 6–10 kV oil fields are overvoltages due to lightning effects.
Sergey V. Sidorov   +2 more
doaj   +1 more source

Optimized Protection of Pole-Mounted Distribution Transformers against Direct Lightning Strikes

open access: yesEnergies, 2020
Direct lightning strikes on overhead phase conductors result in high overvoltage stress on the medium voltage (MV) terminals of pole-mounted transformers, which may cause considerable damage.
Mahdi Pourakbari-Kasmaei   +2 more
doaj   +1 more source

Study on lightning overvoltage and commutation failure in UHV AC/DC hybrid system

open access: yesThe Journal of Engineering, 2019
Due to the high UHV AC/DC transmission line tower, the working voltage amplitude on the wire is large, causing lightning accidents. The paper first analyses the impact of lightning strike point on lightning overvoltage of 1000 kV UHV transformer ...
Shengwei Fang   +4 more
doaj   +1 more source

Evaluation of V–t characteristics caused by lightning strokes at different locations along transmission lines

open access: yesJournal of King Saud University: Engineering Sciences, 2018
Lightning stroke causes a current injection into transmission lines at the point of contact. The lightning performance can be difficult to understand without using simulation programs.
Mohammed Qais, Usama Khaled
doaj  

Correction: Lightning Performance of MMC-HVDC Power Transmission Systems Using Metal-Oxide Surge Arresters [PDF]

open access: bronze, 2023
Thiago Melo de Lima   +4 more
openalex   +1 more source

Design of Lightning Arresters for Electrical Power Systems Protection

open access: yesAdvances in Electrical and Electronic Engineering, 2013
This paper presents an overview of how the lightning strikes and their effects on power distribution systems can be modeled, where the results give a clear picture of how to eliminate the devastating impact, caused by lightning, by using lightning ...
Shehab Abdulwadood
doaj   +1 more source

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