环保绝缘气体设备研发与应用进展

Research and Application Progress of Environmentally Friendly Insulating Gases

摘要:

SF6在中、高压气体绝缘输配电设备中被广泛使用。然而，SF6作为一种强温室气体，其全球变暖潜能值高达CO2的23 500倍且大气寿命长，由于SF6气体作为绝缘气体在电气设备中的大量使用，致使其在大气中的浓度持续增加。为践行“2030年碳达峰，2060年碳中和”的减排目标，推动电网设备选型向绿色环保领域迈进，环保型气体绝缘介质及设备研发成为热点。近年来，全氟化酮、全氟化腈及其混合气体凭借优良的绝缘及环保性能被广泛关注，被认为是极具潜力的SF6替代气体。文中阐述了常见环保型气体绝缘介质的基础特性，分析了其应用于气体绝缘输配电设备的可行性，并介绍了近年来国内外环保绝缘气体设备的研发与应用进展；最后，展望了环保绝缘气体应用面临的问题及未来的发展趋势。

Abstract:

SF6 is widely used in medium and high voltage gas insulating transmission and distribution equipment. However, as a strong greenhouse gas, SF6 has a global warming potential as high as 23,500 times that of CO2 and a long atmospheric life, and its concentration in atmosphere continues to increase due to its extensive use in electrical equipment as an insulating gas. In order to implement the emission reduction goal of "carbon peak in 2030, carbon neutral in 2060" as well as promotethe selection of power grid equipment to move towards the green and environmental protection field, developing eco-friendly gas insulating medium and equipment has become a hot topic. In recent years, perfluorone, perfluoronitrile and their gas mixture have attracted wide attention due to their excellent insulation and eco-friendly properties, which are regarded as SF6 alternative gases with extremely potential. The basic characteristics of common eco-friendly gas insulating medium are described. Then the feasibility of application in gas insulating transmission and distribution equipment is analyzed, and the development and application progress of environmentallyfriendly insulating gas equipment at home and abroad in recent years are introduced. Finally, some problems and future development trends of eenvironmentally friendly insulating gas are prospected.