Results 21 to 30 of about 36,223 (312)

Comprehensive Modeling of Transient Analysis of Grounding System under Lightning Surges [PDF]

open access: yesمجله مدل سازی در مهندسی, 2019
During lightning discharge, the transient performance of grounding system is influenced by the time-dependent nonlinear behavior related to soil ionization and frequency dependence of soil electrical parameters related to high-frequency spectrum of ...
Jalil Ghayur safar, Reza Shariatinasab
doaj   +1 more source

Faulty Line Selection Method Based on Comprehensive Dynamic Time Warping Distance in a Flexible Grounding System

open access: yes, 2022
A flexible grounding system is a system in which the neutral point of the power supply is grounded via the arc suppression coil in parallel with a low-resistance resistor.
Jun Zhang   +6 more
core   +1 more source

A Monocular Ground Plane Estimation System [PDF]

open access: yesProcedings of the British Machine Vision Conference 1991, 1991
This paper describes the design of a system for estimating the pose of a camera mounted on a vehicle which moves over a flat floor. The system has been designed to work in conjunction with an obstacle avoidance scheme. Measurements are derived from a sequence of images captured by a single camera rigidly mounted on the vehicle and looking at the floor,
David A. Castelow, A. J. Rérolle
openaire   +1 more source

Analysis of fault current and overvoltage at the neutral point of ±800 kV High-Voltage DC converter transformer

open access: yesEnergy Reports, 2022
In order to enhance the security of ±800 kV High-Voltage DC (HVDC) system, it is needed to consider and analyze the grounding mode of the neutral point of converter transformer.
Jiaqing Fu   +4 more
doaj   +1 more source

ON THE ISSUE OF DESIGN OF GROUNDING SYSTEMS OF 330(220) KV SUBSTATIONS TO ENSURE THE ELECTROMAGNETIC COMPATIBILITY OF SECONDARY CIRCUITS

open access: yesElectrical engineering & Electromechanics, 2018
Purpose. The purpose of the work is to develop the fundamentals of the design methodology of grounding system design of substations with open switchgears 330 (220) kV, which is aimed at ensuring electromagnetic compatibility of secondary circuits of ...
O. Yu. Glebov   +3 more
doaj   +1 more source

Study on a standard for grounding systems realization [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2012
Grounding systems of objects inside power facilities are very often realized as structures consisting of protective electrodes’ system placed in the object foundation, and neutral electrodes’ system placed at a specified distance from the object.
Vučković Dragan D.   +2 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

Trinocular ground system to control UAVs [PDF]

open access: yes2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2009
In this paper we introduce a real-time trinocular system to control rotary wing Unmanned Aerial Vehicles based on the 3D information extracted by cameras located on the ground. The algorithm is based on key features onboard the UAV to estimate the vehicle's position and orientation.
Carol Martínez   +3 more
openaire   +3 more sources

Research and application of substation grounding wire error prevention management technology based on wireless radio frequency and short-distance communication

open access: yesDiance yu yibiao
Aiming at the problems that the existing grounding wire management technology is immature when the power grid is overhauling and hanging grounding wires, which is easy to cause power grid accidents such as missed disassembly and wrong connection, this ...
QIAN Ping   +5 more
doaj   +1 more source

Research on influencing factors of arc grounding over-voltage in mine power supply system

open access: yesGong-kuang zidonghua, 2017
In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LIU Jucai   +6 more
doaj   +1 more source

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