朱金华,谢成,邵先军,刘家齐,马德英
ZHU Jinhua,XIE Cheng,SHAO Xianjun,LIU Jiaqi,MA Deying

• 1:国网浙江省电力有限公司电力科学研究院
• 2:国网浙江省电力有限公司
• 3:国网河南省电力公司电力科学研究院

摘要(Abstract)：

C_4F_7N因其优异的绝缘和环保特性成为最有潜力替代SF_6气体的绝缘介质。分析阐述了C_4F_7N-CO_2混合气体的基础绝缘性能和在负荷开关中的灭弧性能,总结了不同电场类型、气压、混合比、氧气含量对C_4F_7N-CO_2混合气体基础绝缘性能的影响,分析了不同配比的C_4F_7N-CO_2混合气体在压气式、去离子栅式和磁吹式等3种不同灭弧结构负荷开关上的燃弧特性。研究结论为C_4F_7N-CO_2混合气体作为绝缘和灭弧介质应用于环网柜提供了参考。最后,在现有的研究基础上提出未来C_4F_7N-CO_2混合气体应用于环网柜中的研究方向,一是对现有的开关结构和混合气体配比进一步优化,二是重点关注C_4F_7N混合气体灭弧后分解气体的生物安全性。
C_4F_7N gas has the most potential to replace SF_6 because of its excellent insulation and environmental protection characteristics. The paper expounds the insulation and arc extinguishing performance of C_4F_7N-CO_2 gas mixture,summarizes the influence of different electric field types,air pressure,mixing ratio and oxygen content on the insulation performance of C_4F_7N-CO_2 gas mixture,and analyzes the arc burning characteristics of C_4F_7N-CO_2 gas mixture on different arc extinguishing structure load switches(compressor type,deionization grid type and magnetic blow type). The research results provide a reference for the application of C_4F_7N-CO_2 gas mixture as insulation and arc extinguishing medium in gas insulation ring main units. Finally,on the basis of the existing research,the research directions of C_4F_7N-CO_2 gas mixture applied in ring main units in the future are put forward:The first is to further optimize the existing switch structure and gas mixture ratio,and the second is to focus on the biosafety of decomposed gas after arc extinguishing of C_4F_7Ngas mixture.

关键词(KeyWords)： C_4F_7N-CO_2混合气体;环保气体;绝缘特性;灭弧特性
C_4F_7N-CO_2 gas mixture;eco-friendly gas;insulation characteristic;arc extinguishing performance

Abstract:

Keywords:

基金项目(Foundation): 国家电网有限公司科技项目（5200-201919063A-0-0-00）

作者(Author): 朱金华,谢成,邵先军,刘家齐,马德英
ZHU Jinhua,XIE Cheng,SHAO Xianjun,LIU Jiaqi,MA Deying

DOI: 10.19585/j.zjdl.202201001

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