Results 11 to 20 of about 595 (205)

Decomposition characteristics of C4F7N/CO2 mixture under AC discharge breakdown [PDF]

AIP Advances, 2019
Recently, the C4F7N/CO2 mixture has been highly considered as a promising SF6 alternative due to its low greenhouse effect and excellent electrical performance.
Boya Zhang, Chenwei Li, Jiayu Xiong, Ziyue Zhang, Xingwen Li, Yunkun Deng   +5 more
doaj   +6 more sources

Ageing of C4F7N and CO2-based insulating gas mixtures by free-burning arcs [PDF]

PLASMA PHYSICS AND TECHNOLOGY
This study examines the effects of arc-induced ageing in CO2/O2 (86.3%/13.7%),C4F7N/CO2/O2 (5%/82%/13%) and C4F7N/CO2 (5%/95%) mixtures at 5 bar absolute pressure.
Mauseht, Frank, Støa-Aanensen, Nina, Subhana, Arik   +2 more
core   +4 more sources

3D particle-in-cell simulations of negative and positive streamers in C4F7N-CO2 mixtures [PDF]

, 2023
We investigate negative and positive streamers in C4F7N-CO2 mixtures through simulations. These mixtures are considered to be more environmentally friendly than the insulating gas SF6 that is widely used in high voltage technology.
Ebert, Ute, Guo, Baohong, Teunissen, Jannis   +2 more
core   +8 more sources

The decomposition pathways of C4F7N/CO2/O2 mixtures in the PTFE vapors

AIP Advances
The C4F7N/CO2/O2 mixtures have better arc-extinguishing performance compared to the C4F7N/CO2 mixtures, and they have a broader application prospect as a substitute for SF6 in high-voltage circuit breakers and gas insulated substation pipelines.
Sijie Liu, Xiaolong Li, Zhenxin Geng, Ying Lin   +3 more
doaj   +3 more sources

Adsorption properties of environmentally friendly insulating medium C4F7N and its common decomposition products in NaA, NaZSM‐5, and NaX molecular sieves

High Voltage, 2023
Selecting suitable materials to adsorb the C4F7N mixtures decomposition products could not only keep the stable operation of the environmentally friendly insulating gas switch cabinet, but also ensure the safety of operation and maintenance personnel. It
Shuangshuang Tian, Zian Yuan, Xiaoxing Zhang, Yingxiang Wang, Weifeng Luo, Yang Liu   +5 more
doaj   +2 more sources

The variation of C4F7N, C5F10O, and their decomposition components in breakdown under different pressures [PDF]

AIP Advances, 2021
The decomposition characteristics of C4F7N and C5F10O are basic to understand their insulating and arc-quenching performance, and the decomposition products are related to the equipment discharge fault and insulation state.
Yuwei Fu, Chi Chen, Chuang Wang, Lei Yang, Zaiqin Zhang   +4 more
doaj   +2 more sources

Detection of trace CF4 in C4F7N‐insulated gas‐insulated metal‐enclosed switchgear: Cascading specific chemical reactions with photoacoustic spectroscopy

High Voltage
CF4 is a major decomposition product of the insulating gas in C4F7N‐insulated gas‐insulated metal‐enclosed switchgear (GIS) during partial discharge or overheating faults.
Zhicheng Wu, Jiahao Du, Zehao Zhang, Xiang Li, Shengjin Wang, Xiaoang Li, Qiaogen Zhang   +6 more
doaj   +2 more sources

Comparative studies of C4F7N‐based gas mixtures as the eco‐friendly alternative to SF6 for interrupting applications

High Voltage
To comprehensively evaluate the feasibility of using C4F7N‐based gas mixture as arc extinguishing medium, a comparative study is performed on the variations of the multi‐physical fields, gas flow environment and decomposition characteristics of the gas ...
Wen Wang, Xianglian Yan, Hao Wang, Keli Gao   +3 more
doaj   +2 more sources

Adsorption and sensing characteristics of insulating gas C4F7N on 3d late transition metal‐phthalocyanine: Theoretical and experimental study

High Voltage
Heptafluoroisobutyronitrile (C4F7N) is being considered as a promising alternative to the greenhouse gas SF6 in the electrical industry. However, its biotoxicity necessitates the development of gas sensing technology to detect leaked C4F7N. A combination
Dachang Chen, Ziang Zheng, Cong Zhang, Yi Luo, Song Xiao, Qing Miao, Ke Liu, Beibei Xiao   +7 more
doaj   +2 more sources

Detection of Transient Decomposition Products of CF3SO2F and C4F7N via OES Under Spark and Glow Discharges

High Voltage
The optical emission spectra (OES) reflect the presence of excited states in the gaseous discharge, which are directly linked to the decomposition characteristics of insulating gases.
Chenxi Man, Jincong Wang, Keli Gao, Yiheng Li, Yumin Zhang, Xuekai Pei   +5 more
doaj   +2 more sources