Results 21 to 30 of about 298,299 (227)

Gaseous by-products of a CF3I-CO2 gas mixture under lightning impulse and AC breakdowns

, 2017
This paper examines the use of a CF3I-CO2 gas mixture as an environmentally friendly insulation medium in high voltage gas insulated equipment. The gaseous by-products of a 30:70% CF3I:CO2 (Trifluoroiodomethane – Carbon dioxide) gas mixture are examined ...
Haddad, A, Widger, Phillip
core   +6 more sources

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Jorge Ramirez, Baudilio Valecillos, Valecillos, Baudilio, Ramírez, Jorge   +3 more
core   +3 more sources

Study on debugging of lightning impulse voltage waveform for large capacity ±800kV converter transformer in high altitude area

Frontiers in Energy Research, 2023
The Qinghai-Henan ±800kV UHV DC power transmission project is an UHV channel specially constructed for clean energy delivery, ±800kV converter transformers of the project are assembled and tested in Xining at an altitude of 2500 m, full-wave lightning ...
Ling Jiang, Ling Jiang, Shengfu Wang, Shengfu Wang, Jun Kang, Xiaoku Yang, Xiaoku Yang, Xiuyuan Yao, Yitao Zhang, Yitao Zhang, Zhenghong Bao, Zhenghong Bao, Yongsheng Zhang   +12 more
doaj   +1 more source

Tower impulse grounding resistance measurement based on multiple frequency impedance

IET Generation, Transmission & Distribution, 2023
Tower impulse grounding resistance is important for judging the lightning protection performance of transmission lines. Therefore, it is significant to accurately measure the tower impulse grounding resistance. Existing measurement methods mainly contain
Yihua Dan, Ruixuan Zhang, Yongye Wu, Yiqiao Li, Xuement Wang, Jian Yang   +5 more
doaj   +1 more source

Study on the reliability of new kind of ±1 100 Kv DC voltage divider under the action of impulse voltage

The Journal of Engineering, 2019
To meet the special insulation demand of the DC transmission system with the highest voltage in the world, a new kind of ±1 100 kV DC voltage divider is designed.
Wu Shipu, Pang Wenlong, Yang Zhining, Zhang Kejie, Wu Xixiu   +4 more
doaj   +1 more source

Impacts of Lightning-Induced Overvoltage on a Hybrid Solar PV–Battery Energy Storage System

Applied Sciences, 2021
With increased electrical energy demands projected in the future, the development of a hybrid solar photovoltaic (PV)–battery energy storage system is considered a good option. However, since such systems are normally installed outdoors and in open areas,
Nor Izzati Ahmad, Zaipatimah Ali, Mohd Zainal Abidin Ab. Kadir, Miszaina Osman, Nur Hazirah Zaini, Muhammad Hakirin Roslan   +5 more
doaj   +1 more source

Analysis and Application of New Lightning Protection Equipment of Distribution Lines in Shaanxi Province

Zhongguo dianli, 2019
Based on the operation situation of the lightning arresters commonly used in Shaanxi Province, a lightning arrester with multi-short-gaps is developed, which has excellent ability in extinguishing arc.
Zeli JU, Xinliang LV, Lu PU, Xuefeng ZHAO, Zhe HOU, Zejun LU, Jun WU   +6 more
doaj   +1 more source

An Improved Parametric Method for Selecting Different Types of Tesla Transformer Primary Coil to Construct an Artificial Lightning Simulator

IEEE Access, 2023
Due to the intermittent and hazardous nature of lightning impulse, researchers rely on artificial impulse generators to study it. The Tesla coil is a commonly used device to generate artificial lightning.
Suman Jana, Pabitra Kumar Biswas, Thanikanti Sudhakar Babu, Hassan Haes Alhelou   +3 more
doaj   +1 more source

The effect of lightning impulse characteristics and line arrester to the lightning protection performance on 150 kV overhead lines: ATP-EMTP computational approach

Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2019
This simulation study presents the effect of lightning strikes on the performance of arresters at 150 kV overhead lines. Lightning strikes have several parameters that affect the performance of line arresters (LA), namely lightning charge, and impulse ...
Fri Murdiya, Febrizal Febrizal, Cecilia Stevany, Havel Alindo Sano, Firdaus Firdaus   +4 more
doaj   +1 more source

Observations of X-ray in 4-meters long laboratory sparks under positive lightning impulse

, 2021
In this paper, the observation of X-rays in 4-meters long laboratory sparks is presented for the first time. In this study, a total of 20 standard positive lightning impulse voltages (1.2/50 mu s) with measured peak voltages between 3.0 to 3.2 MV were ...
Andre Lobato, Cooray, Vernon,, Vernon Cooray, Wooi, Chin-Leong,, Lobato, André,, Mahbubur Rahman, Hettiarachchi, Pasan,, Pasan Hettiarachchi, Rahman, Mahbubur,, Chin-Leong Wooi   +9 more
core   +1 more source