气体绝缘设备中气固材料的相容性

Compatibility between Gas and Solid Materials in Gas Insulated Equipment

随着全球变暖及限制温室气体的限排,各种替代SF6的新型环保绝缘气体不断涌现。然而在SF6替代气体大规模使用之前,首先必须掌握这些气体与现役气体绝缘输电线路(GIL)、气体绝缘组合电器(GIS)材料的相容性。该文总结气体绝缘设备中气固材料相容性的研究历史和现状,分别从气体与金属材料、橡胶密封材料(弹性体)和固体绝缘材料(绝缘子)三个方面讨论替代气体相容性研究中仍然存在的问题,提出气固材料相容性试验方法、判断指标及下一步研究设想。

With the global warming and the limitation of greenhouse gas emissions, a variety of new environmental protection insulation gases are emerging to replace SF6. However, before the use of SF6-alternative gas in large scale, the compatibility between these gases and materials used in gas insulated transmission line(GIL) or gas insulated switchgear(GIS) must be investigated. This paper summarizes the research history and current situation of gas-solid material compatibility in gas insulated equipment. The problems still existing in the research of gas-solid material compatibility are discussed from three aspects: gas and metal material, rubber sealing material(elastomer) and solid insulating material(insulator). The test method is set up. Judgment index and next research assumption of gas-solid material compatibility are also put forward in this paper.