首页|Experimental Investigation on Insulation Performance of SO_2/ CO_2 Gas Mixtures
Experimental Investigation on Insulation Performance of SO_2/ CO_2 Gas Mixtures
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
In an effort to replace the use of SF_6 gas in high-voltage equipment, research has been conducted on more environmentally favorable alternative gases to this potent greenhouse gas. In the present study, the SO_2-CO_2 gas mixture is selected among all alternatives, including SF_6, with the requirement to meet features such as reducing ozone depletion potential, global warming potential, being chemically stable, non-toxic, and having a having a boiling point of -15 ℃. Furthermore, aspects like material compatibility-based electrical properties such as dielectric constant, cost, and environmental impacts were taken into consideration. Consequently, a gas mixture of 30% SO_2 and 70% CO_2 was finally chosen. In this paper, power frequency breakdown voltage was experimentally measured under a quasi-uniform field while varying gas pressure from 0.2 to 2 bar for 5 mm and 10 mm of electrode gap, respectively. Subsequently, a synergistic coefficient is calculated for this mixture. The obtained results of PFBDV and synergism coefficient for a 30% SO_2 and 70% CO_2 gas mixture were compared with mixtures like SF_6/N_2, CF_3I/N_2/CO_2, C_3F_8/CO_2, C_4F_7N/CO_2, R12/air/N_2, and c-C_4F_8O/CO_2/N_2. Consequently, it emerged that the insulating characteristics of 30% SO_2 and 70% CO_2 are better than most of the other alternatives, along with considerable advantages like negligible environmental impact, low cost, better material compatibility, and low toxicity. These systematic investigations predominantly indicate that a gas mixture containing 30% SO_2 and 70% CO_2 can be employed as a substitute for SF_6 in high-voltage gas-insulated equipment.
SO_2/CO_2SF6 alternativePower frequency breakdown voltage (PFBDV) characteristicsQuasi-homogeneous electric field
Journal of The Institution of Engineers (India), Series B. Electrical eingineering, electronics and telecommunication engineering, computer engineering
NETL
NSTL
