电测与仪表2017，Vol.54Issue(19)：7-12,38,7.
基于等效热路模型的GIS隔离开关温升计算
Temperature-rise calculation of GIS disconnecting switch based on equivalent thermal-circuit model
摘要
Abstract
Disconnecting switch is the key primary equipment in power system .Temperature rise , which indicates the load capacity of power equipment , especially the enclosed GIS disconnecting switch , it can be calculated to make it an important reference value in engineering .This paper has built an equivalent thermal-circuit model to calculate the temperature rise of 220 kV three-phase enclosed SF 6 disconnecting switch based on heat transfer theory .The calcula-tion formula of convective and radiative heat transfer between GIS conductor and tank has been given .The calculation method of steady thermal field under operating conditions considering the ambient temperature , contact resistance and load current has been proposed .The comparison between FEM and calculated results shows that the proposed model can be used to acquire the hot-point temperature-rise of GIS disconnecting switch under normal operating conditions quickly and effectively , thus providing an important reference on dynamic capacity-increase of power equipment .关键词
GIS隔离开关/温升/等效热路/动态增容Key words
GIS disconnecting switch/temperature rise/equivalent thermal-circuit/dynamic capacity increase分类
信息技术与安全科学引用本文复制引用
刘亚男,舒乃秋,李彦彰,黄锐,耿玉杰..基于等效热路模型的GIS隔离开关温升计算[J].电测与仪表,2017,54(19):7-12,38,7.基金项目
国家863高技术基金项目(2015 AA050204) （2015 AA050204）
国家自然科学基金青年基金项目(51607124) （51607124）
国家电网科技项目(520626150032) （520626150032）
