Gas-insulated equipment(GIE)that utilizes the most potent greenhouse gas sulfur hexafluoride(SF_(6))as insulation and arc-quenching medium has been widely used in the power industry.Seeking eco-friendly insulating gas...Gas-insulated equipment(GIE)that utilizes the most potent greenhouse gas sulfur hexafluoride(SF_(6))as insulation and arc-quenching medium has been widely used in the power industry.Seeking eco-friendly insulating gas with advanced performance for next-generation SF_(6)-free GIE is significant for the“net-zero”goal and sustainable development.In this paper,the utilization,emission,and reduction policies of SF_(6)around the world were summarized first.Then,we systematically reviewed the latest progress in comprehensive performance evaluation of eco-friendly insulating gas in terms of molecular design,dielectric insulation,arc-quenching,stability and decomposition,materials compatibility,biosafety,etc.Further,the representative applications of eco-friendly insulating gas in medium-voltage,high-voltage GIE as well as relevant maintenance-related technologies were highlighted.Accordingly,the existing challenges and future perspectives were proposed,presenting a roadmap to hopefully steer the development of eco-friendly insulating gas and GIE.展开更多
雷击绝缘子闪络后,产生的工频电弧会烧灼绝缘子串及导线,严重时可能导致绝缘子串烧毁和架空导线断线事故。为了改善绝缘子串缺乏主动快速灭弧的能力,设计出一种能够快速熄灭工频电弧的防雷灭弧装置。并进行了大电流灭弧试验。电弧熄灭...雷击绝缘子闪络后,产生的工频电弧会烧灼绝缘子串及导线,严重时可能导致绝缘子串烧毁和架空导线断线事故。为了改善绝缘子串缺乏主动快速灭弧的能力,设计出一种能够快速熄灭工频电弧的防雷灭弧装置。并进行了大电流灭弧试验。电弧熄灭的过程是借助高速摄像及示波器监测。结果表明,该装置以"以快治强"的方法干预早期电弧,能在试验回路的继电保护动作之前熄灭1 k A、10.8 k A的工频电弧且熄灭电弧时间短于8 ms。该间隙已应用于35 kV、110 kV、220 kV电压等级的输电线路上,验证了该装置的实用性。展开更多
基金supported in part by the National Natural Science Foundation of China(Nos.52277144,52107145,and 51907023)the fellowship of China Postdoctoral Science Foundation(No.2022M712446).
文摘Gas-insulated equipment(GIE)that utilizes the most potent greenhouse gas sulfur hexafluoride(SF_(6))as insulation and arc-quenching medium has been widely used in the power industry.Seeking eco-friendly insulating gas with advanced performance for next-generation SF_(6)-free GIE is significant for the“net-zero”goal and sustainable development.In this paper,the utilization,emission,and reduction policies of SF_(6)around the world were summarized first.Then,we systematically reviewed the latest progress in comprehensive performance evaluation of eco-friendly insulating gas in terms of molecular design,dielectric insulation,arc-quenching,stability and decomposition,materials compatibility,biosafety,etc.Further,the representative applications of eco-friendly insulating gas in medium-voltage,high-voltage GIE as well as relevant maintenance-related technologies were highlighted.Accordingly,the existing challenges and future perspectives were proposed,presenting a roadmap to hopefully steer the development of eco-friendly insulating gas and GIE.
文摘雷击绝缘子闪络后,产生的工频电弧会烧灼绝缘子串及导线,严重时可能导致绝缘子串烧毁和架空导线断线事故。为了改善绝缘子串缺乏主动快速灭弧的能力,设计出一种能够快速熄灭工频电弧的防雷灭弧装置。并进行了大电流灭弧试验。电弧熄灭的过程是借助高速摄像及示波器监测。结果表明,该装置以"以快治强"的方法干预早期电弧,能在试验回路的继电保护动作之前熄灭1 k A、10.8 k A的工频电弧且熄灭电弧时间短于8 ms。该间隙已应用于35 kV、110 kV、220 kV电压等级的输电线路上,验证了该装置的实用性。
