高电压技术2025，Vol.51Issue(6)：2672-2679,8.DOI:10.13336/j.1003-6520.hve.20240631
基于丁达尔效应的新型环保绝缘气体稳定性评估
Stability Evaluation of New Eco-friendly Insulating Gases Based on Tyndall Effect
摘要
Abstract
New eco-friendly insulating gases have received widespread attention in the power industry due to their ex-cellent insulating properties and low greenhouse effect.However,partial discharges in power equipment can lead to the decomposition of the new eco-friendly insulating gases and reduce their insulating properties.In order to investigate the stability of the new eco-friendly insulating gas under the discharge environment,a laser scattering detection method based on the Tyndall effect is proposed,and the relationship between the Tyndall effect and the solid decomposition products is studied.The results show that the content of decomposition products is positively correlated with the scattered light inten-sity,and under the same discharge conditions,the stability of C4F7N is better than that of CF3SO2F.Specifically,in a CF3SO2F/N2 gas mixture with a CF3SO2F volume fraction of 20％,the scattering light intensity of the solid product formed by discharge decomposition is 28.1 times that of C4F7N and 224.3 times that of SF6 under the same volume frac-tion.When the CF3SO2F volume fraction is reduced to 10％,the corresponding scattering intensities are 5.3 times and 36.0 times higher than those of C4F7N and SF6,respectively.Moreover,when the discharge duration is less than 10 s,C4F7N exhibits a level of discharge stability comparable to that of SF6.The laser scattering detection based on the Tyndall effect provides a novel method for evaluating the discharge stability of new eco-friendly insulating gases in a discharge environment.关键词
新型环保绝缘气体/固体分解产物/丁达尔效应/激光/散射光强Key words
new eco-friendly insulating gases/solid decomposition products/Tyndall effect/laser/scattered light inten-sity引用本文复制引用
王锦聪,李毅恒,郑宇,高克利,裴学凯..基于丁达尔效应的新型环保绝缘气体稳定性评估[J].高电压技术,2025,51(6):2672-2679,8.基金项目
国家重点研发计划(2021YFB2401400).Project supported by National Key R&D Program of China(2021YFB2401400). （2021YFB2401400）
