Anti-overturning analysis of in-situ jacking foundation for 500KV high voltage transmission tower

2021 ◽  
Author(s):  
Tao Zhang ◽  
Yangsheng Zhang ◽  
Kongliang Chen
Keyword(s):  
High Voltage ◽  
Transmission Tower ◽  
High Voltage Transmission

Composite-Insulated Boom FEM Analysis for the Application of Aerial Work Platform

2012 ◽  
Vol 538-541 ◽  
pp. 886-889
Author(s):  
Dong Pyo Hong ◽  
Byoungkuk Lee ◽  
Chan Gon Park ◽  
Seung Ho Hwang ◽  
Seok Jun You ◽  
...  
Keyword(s):  
High Altitude ◽  
High Voltage ◽  
Fem Analysis ◽  
Load Reduction ◽  
Transmission Tower ◽  
Insulating Material ◽  
High Voltage Transmission

Telescopic aerial boom system is used transport the object or can be used to ease working high altitude. Installation of high voltage transmission tower due to urbanization is increasing. Because working on high places such as wiring Operations and electrical maintenance has increased the demand. Boom of aerial work platform are made of steel. So, necessity for safe isolation aerial work platform used for electrical work is increasing. This paper is proposed about applied to the material used in the aerial work platform boom. Insulating material was applied to the aerial work platform the last end boom in boom system. In this paper aerial work platform boom is characterized by apply insulating material and lightweight through self-load reduction and isolation. In this paper analyzes the design of the telescopic aerial boom system of applying the insulating material using the ansys. Then design was verified through comparison of the insulation telescopic aerial lift system and Mass-produced existing telescopic aerial boom system.

scholarly journals Design and Implementation of a New Climbing Robot for High Voltage Transmission Tower

2018 ◽  
Vol 428 ◽  
pp. 012071
Author(s):  
Wentao Jiang ◽  
Ronghai Liu ◽  
Yingchun Yang ◽  
Shuting Wan ◽  
Xinliang Guo ◽  
...  
Keyword(s):  
High Voltage ◽  
Climbing Robot ◽  
Transmission Tower ◽  
Design And Implementation ◽  
High Voltage Transmission

scholarly journals Characteristics of Rainfall in Wind Field of a Downburst and Its Effects on Motion of High-Voltage Transmission Line

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
Chao Zhou ◽  
Li Li ◽  
Yibing Liu
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Unit Length ◽  
Transmission Tower ◽  
High Voltage Transmission Line ◽  
Vibration Model ◽  
Wind Velocities ◽  
Aerodynamic Property ◽  
High Voltage Transmission ◽  
Observation Results

Despite most weather-related failures of high-voltage transmission lines (HVTLs) being attributed to the downbursts accompanied by heavy rainfall, research works mainly focused on the behaviors of the high-voltage transmission tower-line structures under dry downburst winds. This paper thus presents a preliminary study to discuss the characteristics of rainfall in the downbursts and their effects on responses of HVTLs. Based on Vicroy model, the velocities of raindrops and their loads and pressure ratios of downburst wind-driven rain and only downburst wind on the surface of HVTLs per unit length are obtained. A downburst wind-rain induced vibration model is established to calculate the effects of the rainfall intensity and wind velocities on the motions of HVTLs. To verify the feasibility and accuracy of the model, the model is applied to evaluate responses of HVTLs with measured aerodynamic coefficients. The responses of HVTLs from the evaluated (the model) and the field observation results are compared. The results indicated that the model is feasible and can capture main features of the rainfall acting on HVTLs in the downbursts. Furthermore, the effects of rainfall cannot be neglected, and more attention should be paid to the wet downbursts and their effects on aerodynamic property of HVTLs.

Progress in environmental high-voltage transmission electron microscopy for nanomaterials

2020 ◽  
Vol 378 (2186) ◽  
pp. 20190602
Author(s):  
Nobuo Tanaka ◽  
Takeshi Fujita ◽  
Yoshimasa Takahashi ◽  
Jun Yamasaki ◽  
Kazuyoshi Murata ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Voltage ◽  
High Energy ◽  
Transmission Electron ◽  
Recent Developments ◽  
In Situ Observations ◽  
High Voltage Transmission ◽  
And Function

A new environmental high-voltage transmission electron microscope (E-HVEM) was developed by Nagoya University in collaboration with JEOL Ltd. An open-type environmental cell was employed to enable in-situ observations of chemical reactions on catalyst particles as well as mechanical deformation in gaseous conditions. One of the reasons for success was the application of high-voltage transmission electron microscopy to environmental (in-situ) observations in the gas atmosphere because of high transmission of electrons through gas layers and thick samples. Knock-on damages to samples by high-energy electrons were carefully considered. In this paper, we describe the detailed design of the E-HVEM, recent developments and various applications. This article is part of a discussion meeting issue ‘Dynamic in situ microscopy relating structure and function'.

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