Results 1 to 10 of about 777 (200)

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   +3 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   +3 more sources

Enhancing Corrosion Resistance of Copper for C4F7N Based Eco‐Friendly Gas‐Insulated Equipment

High Voltage
Perfluoroisobutyronitrile (C4F7N) is recognised as the next‐generation dielectric medium for eco‐friendly gas‐insulated equipment (GIE). However, there is gas metal incompatibility in strong electromagnetic environments and environmentally friendly ...
Song Xiao, Haoran Xia, Zhanyuan Li, Yifan Wang, Ju Tang, Xiaoxing Zhang, Yi Li   +6 more
doaj   +3 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   +3 more sources

Dual Role of Dopant CO2/O2 in C4F7N Insulating Gas Based on Density Functional Theory Calculation [PDF]

ACS Omega
Perfluoroisobutyronitrile (C4F7N) has emerged as a sustainable alternative to SF6 in gas-insulated equipment (GIE). However, its high boiling point of −4.7 °C and fast thermal decomposition rate under extreme conditions impede its large-scale practical ...
Wei Liu, Xianglian Yan, Yuanyuan Zheng, Yuanyuan Cui, Dan Li, Kun Wang, Longjiu Cheng   +6 more
doaj   +3 more sources

Inhibition Effect of Solid Products and DC Breakdown Characteristics of the HFO1234Ze(E)-N₂-O₂ Ternary Gas Mixture. [PDF]

ACS Omega, 2021
HFO1234ze(E) is an environmentally friendly SF6 substitute gas with prominent application potential. To suppress the generation of the HFO1234ze(E) solid decomposition products, which may cause great hazards to the gas–solid insulation strength, a gas ...
Liu H, Li Q, Wang J, Jiang Y, Haddad AM.
europepmc   +3 more sources

Investigating the Influence of O₂ on Surface Flashover Characteristics and Gas-Solid Interface Compatibility in C₄F₇N/CO₂ Mixtures Under Negative DC Voltage

IEEE Access
Previous studies have indicated that the addition of O2 can enhance the insulation performance and chemical stability of C4F7N/CO2 mixed gases during partial discharge to a certain extent.
Dongwei Sun, Feng Wang, Kaibin Liang, Lipeng Zhong, Heng Yi, Nian Tang, Zhi Li   +6 more
doaj   +2 more sources

The Decomposition Pathways of C₄F₇N/CO₂ Mixtures in the Presence of Organic Insulator Vapors

IEEE Access
As a potential substitute for SF6, C4F7N/CO2 mixture gas has a broad application prospect in gas insulated substation (GIS) busbars and high-voltage circuit breakers.
Sijie Liu, Xiaolong Li, Wen Wang, Zhenxin Geng, Ying Lin   +4 more
doaj   +2 more sources

AC breakdown and decomposition products detection characteristics of eco-friendly insulating medium in gas insulated switchgear [PDF]

Scientific Reports
Gas Insulated Switchgear (GIS) was a crucial electrical equipment that provides the safety and security of power systems, and finding the eco-friendly alternatives of sulphur hexafluoride (SF6) as insulating medium in GIS has been an urgent demand in ...
Shuai Du, Xian Cheng, Guowei Ge, Tianyun Li, Longyu Guo, Sai Liu   +5 more
doaj   +2 more sources

Ultralight soft electrostatic actuators based on solid-liquid-gas architectures [PDF]

Nature Communications
Soft actuators enable versatile and adaptable robots capable of operating in unstructured environments and close to humans. Soft electrostatic actuators utilizing electrohydraulic principles are particularly promising, combining all-around actuation ...
Hyeong-Joon Joo, Toshihiko Fukushima, Xiying Li, Alona Shagan Shomron, Soo Jin Adrian Koh, Philipp Rothemund, Christoph Keplinger   +6 more
doaj   +2 more sources