运用ANSYS仿真优化软件,对12k V C-GIS设计中主回路绝缘件的电场分布进行了模拟分析,优化了结构设计,并通过工程实践验证了模拟分析的正确性,为提高产品的绝缘性能提供了有益的参考。本文所提出的优化设计方案准确性较高,解决了C-GIS主...运用ANSYS仿真优化软件,对12k V C-GIS设计中主回路绝缘件的电场分布进行了模拟分析,优化了结构设计,并通过工程实践验证了模拟分析的正确性,为提高产品的绝缘性能提供了有益的参考。本文所提出的优化设计方案准确性较高,解决了C-GIS主回路绝缘件存在的不可靠问题。展开更多
1、引言 柜式气体绝缘金属封闭开关设备,国际上简称C-GIS（Cubicle type Gas Insulated Switchgear）,俗称充气柜,是一种用于10-35k V或更高电压输配电系统实现控制、保护、测量、监视、通讯等功能的新型开关设备,它将各高压元件设置在...1、引言 柜式气体绝缘金属封闭开关设备,国际上简称C-GIS（Cubicle type Gas Insulated Switchgear）,俗称充气柜,是一种用于10-35k V或更高电压输配电系统实现控制、保护、测量、监视、通讯等功能的新型开关设备,它将各高压元件设置在密封容器内,充入较低压力的绝缘气体作为绝缘介质,因此,其最大特点是不受外界环境条件的影响,如高海拔、凝露、污秽、小动物及化学物质的影响。展开更多
CF3I has been widely considered as a potential alternative for SF6,because it has low global warming potential(GWP)but an insulation capability that is 1.2 times greater than that of SF6.In this paper,the electron swa...CF3I has been widely considered as a potential alternative for SF6,because it has low global warming potential(GWP)but an insulation capability that is 1.2 times greater than that of SF6.In this paper,the electron swarm parameters of CF3I and its gas mixture with N2,including the effective ionization coefficient and electron drift velocity,are examined theoretically through the Boltzmann equation method in the condition of steady-state Townsend(SST)experiments.Based on the derived data of the limiting field strength of CF3I-N2gas mixture,taking into consideration of environmental aspects such as GWP,ozone depletion potential(ODP),liquefaction temperature and toxicity,we studied the possibility of applying the gas mixture as the insulation medium in gas-insulated switchgears(GIS)or cubic type gas-insulated switchgears(C-GIS).It is found that CF3I-N2gas mixtures contained 30%～70%CF3I perform comprehensively better than pure SF6and compressed N2,and especially in medium and low voltage environments,the boiling point of CF3I-N2gas mixture meets the domestic and global requirements in mid-low latitude regions.Therefore we conclude that the gas mixture is acceptable for replacing SF6as the insulation medium in C-GISs.展开更多
文摘1、引言 柜式气体绝缘金属封闭开关设备,国际上简称C-GIS（Cubicle type Gas Insulated Switchgear）,俗称充气柜,是一种用于10-35k V或更高电压输配电系统实现控制、保护、测量、监视、通讯等功能的新型开关设备,它将各高压元件设置在密封容器内,充入较低压力的绝缘气体作为绝缘介质,因此,其最大特点是不受外界环境条件的影响,如高海拔、凝露、污秽、小动物及化学物质的影响。
基金Project supported by National Natural Science Foundation of China （51177101）
文摘CF3I has been widely considered as a potential alternative for SF6,because it has low global warming potential(GWP)but an insulation capability that is 1.2 times greater than that of SF6.In this paper,the electron swarm parameters of CF3I and its gas mixture with N2,including the effective ionization coefficient and electron drift velocity,are examined theoretically through the Boltzmann equation method in the condition of steady-state Townsend(SST)experiments.Based on the derived data of the limiting field strength of CF3I-N2gas mixture,taking into consideration of environmental aspects such as GWP,ozone depletion potential(ODP),liquefaction temperature and toxicity,we studied the possibility of applying the gas mixture as the insulation medium in gas-insulated switchgears(GIS)or cubic type gas-insulated switchgears(C-GIS).It is found that CF3I-N2gas mixtures contained 30%～70%CF3I perform comprehensively better than pure SF6and compressed N2,and especially in medium and low voltage environments,the boiling point of CF3I-N2gas mixture meets the domestic and global requirements in mid-low latitude regions.Therefore we conclude that the gas mixture is acceptable for replacing SF6as the insulation medium in C-GISs.
