Effect of oxygen on power frequency breakdown voltage and decomposition characteristics of the C5F10O/N2/O2 gas mixture

Zhang, Yue; Zhang, Xiaoxing; Li, Yi; Li, Yalong; Chen, Qi; Zhang, Guozhi; Xiao, Song; Tang, Ju

doi:10.1039/c9ra03275d

Cited by 17 publications

(2 citation statements)

References 38 publications

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“…Zheng et al have found that the tensile stress and strain properties of EPDM were seriously degraded after aging with C 4 F 7 N at 130 °C [81]. It was also reported by Pohlink et al that the permeation rate of a C 4 F 7 N/CO 2 gas mixture with EPDM is five times higher than for SF 6 [161]. Adsorbents and desiccants are used in gas insulated equipment to adsorb trace water and other byproducts.…”

Section: Materials Compatibilitymentioning

confidence: 88%

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress

Zhang

Xiong

Chen

et al. 2020

J. Phys. D: Appl. Phys.

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Environmental considerations are increasingly taking a front seat in all arenas of our daily lives. Among the major concerns are greenhouse gases and the resulting global warming problem. Although sulfur hexafluoride (SF6) is the most widely used insulation and arc-interruption medium in electrical power equipment, it is an extremely potent greenhouse gas with a very high global warming potential (GWP). Hence, the global power industry has been actively seeking SF6-alternative gases for decades. In recent years, much progress has been made in developing promising new gases that have dielectric properties similar to, or even better than, SF6 but with much lower GWPs. Many engineering-oriented tests have been performed on the technical performance of these gases and some manufacturers have announced their application in pilot projects. However, their large-scale application still seems premature, in particular because of the lack of some critical fundamental physicochemical information for these relatively novel compounds. To provide a better understanding of these SF6-alternative gases, this paper reviews the recent advances in obtaining their fundamental physicochemical properties, emphasizing basic data calculations and fundamental experiments. The most important properties are analyzed comprehensively. These include the basic physical properties of arc plasmas formed from the gases, decomposition characteristics, materials compatibilities, swarm parameters, cross-sections and some dielectric properties. Finally, perspectives on current research and future research directions are presented.

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Section: Materials Compatibilitymentioning

confidence: 88%

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress

Zhang

Xiong

Chen

et al. 2020

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…For example, C 2 F 6 can cause suffocation and C 3 F 6 can cause dizziness [135]. Under high-temperature conditions, the CF 4 and C 2 F 6 gases produced at the anode may react with ambient oxygen to form corrosive and poisonous gasses like COF 2 , which directly endangers human health [136]. The anode current density and the concentration of neodymium oxide in the molten salt system are the main causes of the production of C x F y greenhouse gases.…”

Section: Treatment Of Anode Gasesmentioning

confidence: 99%

Research Status of Electrolytic Preparation of Rare Earth Metals and Alloys in Fluoride Molten Salt System: A Mini Review of China

Liao,

Que,

et al. 2024

Metals

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China’s rare earth reserves and consumption are the highest in the world. Rare earth metals and alloys play a pivotal role in the domains of permanent magnetic materials, hydrogen storage materials, luminescent materials, abrasive materials, etc. The molten salt electrolysis process is the most widely used method for producing light rare earth metals and alloys in China, with distinct advantages such as continuous production and short process flow. This article focuses on the process technology of preparing rare earth metals and alloys by electrolyzing rare earth oxides in fluoride systems. This article summarizes the effects of process parameters such as cathode and anode structures, electrolysis temperature, and current density on the direct recovery and current efficiency of the preparation of light rare earth metals (La, Ce, Pr, Nd), RE–Mg (RE for rare earth) alloys, RE–Al alloys, RE–Ni alloys, and other rare earth alloys. Meanwhile, the disadvantages of the electrolytic cells and electrode configurations that are currently used in industrial production are discussed. Accordingly, the future prospects of molten salt electrolysis technology in the preparation of rare earth metals and alloys are clarified.

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Influence of Oxygen on Characteristic Law of C5F10O/N2 Mixture Partial Discharge Statistical Characteristic

Li,

Yao,

Deng

et al. 2024

Lecture Notes in Electrical Engineering

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Effect of oxygen on power frequency breakdown voltage and decomposition characteristics of the C₅F₁₀O/N₂/O₂ gas mixture

Abstract: C5F10O gas mixture is a SF6 potential substitute with high insulation strength and is a new type of environmentally friendly insulating gas. By adding oxygen to C5F10O gas mixture, insulation strength can be improved and carbon deposition can be suppressed.

Cited by 17 publications

References 38 publications

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress

Research Status of Electrolytic Preparation of Rare Earth Metals and Alloys in Fluoride Molten Salt System: A Mini Review of China

Influence of Oxygen on Characteristic Law of C5F10O/N2 Mixture Partial Discharge Statistical Characteristic

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Effect of oxygen on power frequency breakdown voltage and decomposition characteristics of the C5F10O/N2/O2 gas mixture

Abstract: C5F10O gas mixture is a SF6 potential substitute with high insulation strength and is a new type of environmentally friendly insulating gas. By adding oxygen to C5F10O gas mixture, insulation strength can be improved and carbon deposition can be suppressed.

Cited by 17 publications

References 38 publications

Fundamental physicochemical properties of SF6-alternative gases: a review of recent progress

Fundamental physicochemical properties of SF6-alternative gases: a review of recent progress

Research Status of Electrolytic Preparation of Rare Earth Metals and Alloys in Fluoride Molten Salt System: A Mini Review of China

Influence of Oxygen on Characteristic Law of C5F10O/N2 Mixture Partial Discharge Statistical Characteristic

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Effect of oxygen on power frequency breakdown voltage and decomposition characteristics of the C₅F₁₀O/N₂/O₂ gas mixture

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress

Fundamental physicochemical properties of SF₆-alternative gases: a review of recent progress