Results 21 to 30 of about 12,640 (288)

Study on Flow Performance of Airboard Flame Arresters

Hangkong gongcheng jinzhan, 2018
In our country, as the airworthiness certification and aviation technology are lagging far behind, the development of domestic airborne flame arrester has just been included into the agenda. Hence, based on the analysis of the reason of the pressure drop
Liu Minghui, Wang Jiu, Chen Xiaofeng, Xiong Yaqing, Liu Zhong   +4 more
doaj   +1 more source

Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions

Energies, 2021
As a result of lightning strikes, pollution, and ice, overhead distribution wires might be short-circuited and trip. As a result, researchers have developed a new lightning protection composite insulator.
Jiazheng Lu, Jianping Hu, Zhen Fang, Xinhan Qiao, Zhijin Zhang   +4 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

Investigation of Diagnostic Techniques for Metal Oxide Surge Arresters [PDF]

, 2005
Gapless metal oxide surge arresters(MOSA)have been available in the market for many years since they were first introduced in the 1970's. The aim of this study is to investigate some reliable diagnostic techniques to assess the condition of a metal oxide
Mardira, Karl P., Saha, Tapan K., Sutton, R. A.   +2 more
core   +1 more source

Externally gapped line arresters placement effect on transmission line lightning performance including the frequency response of the grounding system

IET Generation, Transmission & Distribution, 2023
This paper conducts the frequency‐dependent grounding system impact on externally gapped line arresters (EGLAs) operation and their placement effects on the lightning performance of a transmission line (TL).
Masume Khodsuz
doaj   +1 more source

Reliability centered condition-based maintenance of zinc oxide lightning arresters: concept, process and case study

Frontiers in Energy Research
Introduction: The reliability of power equipment is the foundation for maintaining the reliability of the power grid. As a core device for limiting overvoltage in the power grid, lightning arresters have received widespread attention, and ensuring their ...
Fan Yang, Rui Han, Yu Zheng, Peng Jiang, Wenhao Wang, Xuzhu Dong   +5 more
doaj   +1 more source

Power frequency interference and suppression in measurement of power transmission tower grounding resistance [PDF]

, 2014
“If you want peace, work for justice.” – Pope Paul VI This paper explores how the children’s right to be heard is implemented in the criminal proceedings in Romania and Norway.
Wenjun, Zhou, Yushun, Liu, Li, Gongxin, Yan, Guozhi, Yang, Shuai, Li, Han, Zhou, Chengke, Su, Charles Qi   +7 more
core   +1 more source

Calculation and protection on the lighting intruding waves of 550 kv GIS substation

The Journal of Engineering, 2018
Electromagnetic Transient Programme has been used to calculate the lightning intruding wave of 550 kV GIS substation. The effects of mode operation, surge impedance and length of cable have been considered in the process of calculation.
Dongpeng Sui, Fucun Huang, Danyi Chi, Yanan Wang, Jiyang Kang, Dan Zhao   +5 more
doaj   +1 more source

Electrical field distribution of 35 KV Igla under polluted and ice-covered situation at power frequency

The Journal of Engineering, 2019
Lightning striking on power system may lead to severe accident and huge losses, which is the reason why line arresters are needed. During operation, the electrical field concentration in line arrester may lead to ablation and accelerated aging of ...
Guo Jie, Wu Xiaoke, Li Mengzhen, Zhao Zexin, Xu Long   +4 more
doaj   +1 more source

Study on overvoltage of hybrid LCC-VSC-HVDC transmission

The Journal of Engineering, 2018
Hybrid line commutation converter-voltage-source converter high-voltage direct current transmission (LCC-VSC-HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present.
Dizhen Xu, Xiaobin Zhao, Yuxin Lu, Kang Qin, Long Guo   +4 more
doaj   +1 more source