Results 261 to 270 of about 2,085,793 (277)

Impulse characteristics of grounding systems of transmission-line towers in the regions with high soil resistivity

POWERCON '98. 1998 International Conference on Power System Technology. Proceedings (Cat. No.98EX151), 2002
The lightning protection effects of power transmission lines are related to the impulse characteristics of grounding systems of transmission-line towers. The influences of several main factors on impulse grounding properties are systematically analyzed by simulation experiments according to the simulation theory in this study.
null He Jinliang, null Zeng Rong, null Chen Shuiming, null Li Siyun, null Wu Weihan   +4 more
openaire   +1 more source

Crest ground resistance of a HV tower: practical measurement with a portable impulse generator of a few amps

2000 IEEE ESMO - 2000 IEEE 9th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings. ESMO 2000 Proceedings. Global ESMO 2000. The Power is in Your Hands (Cat. No.00CH37183), 2002
Lightning strikes may cause a rise in transmission tower potential which could produce a tower-to-phase flashover. This paper presents a computer-modeled technique applied to study this phenomena. 120 kV and 315 kV power lines have been modeled. Transmission tower potential is presented.
R. Lanoie, J. Fortin
openaire   +1 more source

A simplified method for calculating the impulse resistance of vertical grounding rods

2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM '02. Proceedings., 2003
A simplified method is proposed for calculating the impulse resistance of vertical grounding rods. The analytic formula is first derived to determine the low current resistance and then the calculation procedure is developed to estimate the impulse resistance.
openaire   +1 more source

An original setup to measure grounding resistances using fast impulse currents and very short leads

Electric Power Systems Research, 2019
Abstract This paper presents a method for measuring grounding resistances, which is based on the use of fast impulse current and short leads on the auxiliary measurement circuits. Usually, the conductor length of the voltage and current circuits used in grounding resistance measurements may be quite long depending on the grounding characteristics ...
A.B. Lima, C.E.F. Caetano, J.O.S. Paulino, W.C. Boaventura, I.J.S. Lopes, C.F. Barbosa   +5 more
openaire   +1 more source

Experimental analysis of horizontal grounding wires buried in high-resistivity soils subjected to impulse currents

Electric Power Systems Research, 2023
Rafael Alipio, Vilson L. Coelho, Gennaro L. Canever   +2 more
openaire   +1 more source

On-site measurement method of impulse grounding resistance of transmission tower grounding network

WIT Transactions on Engineering Sciences, 2015
Bin Cao, Jun-jie Zheng, Shao-dong Wei, Chang-geng Tu, Ming Liu, Yang Yang, Wen-jun Zhou   +6 more
openaire   +1 more source

Behavior of Transient Ground Resistances of Ground Rod Subjected to Impulse Currents

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2019
Seung-Ki Jung, Bok-Hee Lee
openaire   +1 more source

Design of impulse grounding resistance measurement system for distribution network based on wavelet packet optimal algorithm

International Journal of Powertrains, 2023
Qing Wang, Na Yu, Chencong Jin
openaire   +1 more source

Laboratory investigation of impulse characteristics of transmission tower grounding devices

IEEE Transactions on Power Delivery, 2003
, Rong Zeng
exaly  

Dynamic Characteristics of Ground Resistance due to Soil Ionization under Impulse Currents

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2018
Yong-Tae Choi, Bok-Hee Lee
openaire   +1 more source