The Analysis of Expansion Amount Calculation of Thermal Compensation Bellows for GIS Busbar

doi:10.11985/2017.06.007

Abstract

Abstract:

Due to the problems in design of the thermal compensation bellows for GIS busbar,the deformation caused by the temperature changing can’t be eliminated in the substation operation process,and cracking can be found in the fixed support. To solve the problems, the major factors of deformation and principles are analyzed in the design of busbar bellow. By the united simulation in electromagnetic and temperature field, the temperature rise of the GIS cylinder is determined under the rated current, and the critical parameter is provided for the design of the bellow. The experimental results also conform the analysis and the calculation are acquired. The results show that the simulation of the temperature rise is consistent with the test, the theory evidence is provided for the reliability design of bellows.

Key words: GIS busbar, bellow, expansion amount, electromagnetic field, temperature field

CLC Number:

TM216

Jia Gengfeng,Li Jun,Jiang Xiaoxu,Zhi Xiao,Guo Yujing,Yan Jianxin. The Analysis of Expansion Amount Calculation of Thermal Compensation Bellows for GIS Busbar[J]. Journal of Electrical Engineering, 2017, 12(6): 36-40.

Figures/Tables 11

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检测时间	开裂位置
2月29日	Ⅲ母1气室与2气室之间母线支架
3月12日	Ⅰ母开关西侧支架
4月12日	Ⅲ母1气室刀开关端子箱处母线支架
5月22日	Ⅲ母7气室处母线支架

筒体	点1	点2	点3	点4	点5	均值
温度/℃	34.6	34.8	35.3	35	34.6	34.82
温升/K	20.6	20.8	21.3	21.0	20.6	20.86