Results 1 to 10 of about 5,952 (245)

Application of Visual Three-Position Isolation and Grounding Integration Device Replacing Visual Grounding Device

open access: yesChengshi guidao jiaotong yanjiu
[Objective]Disconnector is a key equipment in rail transit traction power supply system. With the development of intelligent switch equipment technology and the increasing demand for intelligent operation and maintenance management of power supply ...
LI Jun   +10 more
doaj   +2 more sources

REQUIREMENTS FOR DEVICES FOR VERTICAL ELECTRICAL SOUNDING OF SOIL AT DIAGNOSTICS OF GROUNDING DEVICES

open access: yesElectrical engineering & Electromechanics, 2016
Purpose. Creation the scientific requirements for technical characteristics of equipment for vertical electrical sounding based on the electrophysical characteristics of the soil of energy objects with the different voltage classes. Methodology.
S. S. Rudenko
doaj   +5 more sources

Compound mixtures based on hydrolyzed Polyacrylonitrilereducing soil electrical resisctivity

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2021
THE PURPOSE. The purpose of the article is to define the reasons to improve the system of grounding devices design. Author studies technical decisions that reduce grounding resistance values. Results are given researches how a mineral conductive mixture,
M. A. Drako   +2 more
doaj   +1 more source

Measurement and analysis of impulse grounding impedance of tower grounding device subjected to artificial lightning M‐component

open access: yesIET Generation, Transmission & Distribution, 2023
The impulse grounding impedance of tower grounding device is one of the important factors in the lightning protection evaluation of transmission line. The impulse characteristic test of the actual tower grounding device under lightning was rarely carried
Yi Zhang   +7 more
doaj   +1 more source

Simulation and Experiment Analysis of 10 kV Flexible Grounding Device

open access: yesInformation, 2021
The traditional 10 kV distribution network grounding system has some disadvantages, such as small grounding current and poor arc extinguishing effect, thus, hindering the detection of high-resistance grounding fault.
Mengxuan Liu, Chi Zhang, Kangli Liu
doaj   +1 more source

E-cigarette devices used on school grounds [PDF]

open access: yesAddictive Behaviors, 2020
Preliminary evidence suggests adolescents use e-cigarettes in school. However, little is known about the types of devices that are used in schools, where they are used, and who uses them. Knowledge about these issues is critical to inform school regulations.Cross-sectional surveys were conducted in 6 Connecticut high schools in 2019.
Asti, Jackson   +9 more
openaire   +2 more sources

Novel Method for Comprehensive Corrosion Evaluation of Grounding Device

open access: yesIEEE Access, 2020
Tower grounding device provides the discharging channel for fault currents, ensuring the safe and reliable operation of transmission lines. However, the carbon steel tower grounding device is prone to corrosion, which affects the discharging performance ...
Zhanlong Zhang   +5 more
doaj   +1 more source

A faulty section location method for distribution grid based on grounding fault transfer device

open access: yesEnergy Reports, 2022
In the distribution grids, grounding fault transfer devices have been widely used to suppress the transient arc grounding fault. Based on the grounding fault transfer device, a high sensitivity faulty section location method is proposed in this paper ...
Zhen Li   +3 more
doaj   +1 more source

Research on impulse impedance model and protection optimization of transmission tower grounding device in mountainous area

open access: yesIET Science, Measurement & Technology, 2021
The impulse impedance of the tower is the core parameter to evaluate the lightning protection performance of the transmission line. The high soil resistivity and the underground rock layers in the mountainous areas will induce large impulse impedance and
Lin Huang   +5 more
doaj   +1 more source

Analysis of Fault Characteristics of Distribution Network with PST Loop Closing Device under Small Current Grounding System

open access: yesEnergies, 2022
With the rapid development of cities and the increasing complexity of distribution network systems, the cableization of transmission lines and the diversification of power users have brought new challenges to the supply reliability of distribution ...
Zhi Xu   +6 more
doaj   +1 more source

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