Results 1 to 10 of about 753,211 (303)

Analysis and Simulation of Measured Wind Speed and Wind Speed Correction Method of Tower Under Microtopography

open access: yesZhongguo dianli, 2022
The operation safety of transmission lines is greatly affected by strong wind, but the previous research lacks the measured wind speed data and ignores the influence of micro topography on wind speed coefficient.
Chunhua FANG   +4 more
doaj   +1 more source

Corrosion detection of reinforced concrete structures based on microwave nondestructive technique

open access: yesAIP Advances, 2023
The corrosion of rebars will change the mechanical properties of the reinforced concrete structure, leading to the decline in the structural strength, which seriously threatens the safety and stability of buildings and power equipment foundations. Hence,
Peng Li   +6 more
doaj   +1 more source

Parameter identification of Preisach model based on velocity-controlled particle swarm optimization method

open access: yesAIP Advances, 2021
The Preisach model is widely used to simulate the magnetic performance of transformers and motors in industrial applications. However, its parameter identification problem is still a complicated task.
Long Chen   +4 more
doaj   +1 more source

Multi-Defect Detection Network for High-Voltage Insulators Based on Adaptive Multi-Attention Fusion

open access: yesApplied Sciences, 2023
Insulators find extensive use across diverse facets of power systems, playing a pivotal role in ensuring the security and stability of electrical transmission.
Yiming Hu   +3 more
doaj   +1 more source

Human-Induced-Vibration Response Analysis and Comfort Evaluation Method of Large-Span Steel Vierendeel Sandwich Plate

open access: yesBuildings, 2022
A steel Vierendeel sandwich plate used as a large-span lightweight floor structure for vibration comfort during crowd gatherings was considered. Taking the steel Vierendeel sandwich plate in Guizhou Museum as an example, through finite element transient ...
Lan Jiang   +3 more
doaj   +1 more source

Omega transmission lines [PDF]

open access: yes2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, 2013
In this paper, we show how bi-anisotropic media with omega-type response can be realized using periodically loaded transmission lines. General conditions for the needed unit cell circuit block are derived. Also, an implementation is shown and analyzed.
Vehmas, J., Tretyakov, S.
openaire   +2 more sources

Electromagnetic Vibration Analysis of Magnetically Controlled Reactor Considering DC Magnetic Flux

open access: yesIEEE Access, 2020
The main factors of stress distribution in MCRs are the magnetostriction effect of the core materials and the magnetic force between gaps under DC bias excitation.
Tong Ben   +5 more
doaj   +1 more source

Prediction on coupled transmission tower-line system dynamic response under strong wind based on support vector regression

open access: yesEnergy Reports, 2022
Overhead transmission lines may be destroy by strong wind, the collapse of it may bring about serious consequences. Therefore, understanding the dynamic response changing laws of the tower with various wind conditions is necessary in design stage.
Chuan Wu   +6 more
doaj   +1 more source

An improved eddy current loss model over broadband frequency range

open access: yesAIP Advances, 2022
To accurately predict the eddy current loss of silicon steel laminations over broadband frequency range, an improved parametric magneto dynamic model (IPMD) is proposed in this paper.
Long Chen   +3 more
doaj   +1 more source

Effect of electrical erosion on composite insulator core rod under acidic environment

open access: yesJournal of Materials Research and Technology, 2023
Silicone rubber housings crack under the combined internal and external factors and expose the core rod. The exposed core rod deteriorates or breaks under electric fields and electrical current. Based on the main characteristics and mechanism of the core
Guohui Pang   +4 more
doaj   +1 more source

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