The electric field strength calculation and structure optimization for the low carbon 35kV GIS chamber
[1]Cheng Xian,Wang Haiyan,Yan Guangchao,et al.The electric field strength calculation and structure optimization for the low carbon 35kV GIS chamber[J].Journal of Zhengzhou University (Engineering Science),2016,37(05):67-71.[doi:10.13705/j.issn.1671-6833.2016.05.013]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37
Number of periods:
2016 05
Page number:
67-71
Column:
Public date:
2016-11-25
- Title:
- The electric field strength calculation and structure optimization for the low carbon 35kV GIS chamber
- Keywords:
- GIS gas chamber; electric field strength calculation; insulation dielectric; electric field distribution; structure optimization
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2016.05.013
- Abstract:
- The electric field distribution of the gas chamber of the gas-insulated metal-enclosed switchgear is a key issue to be considered in its structural design. The electric field distribution in the gas chamber should be as uniform as possible to avoid flashover and discharge at the place where the field intensity is concentrated. Direct use of SF6/N2 mixed Gas instead of pure SF6 gas as the insulation medium of 35 kV voltage level GIS gas chamber cannot meet its insulation requirements. To solve this problem, the author conducts electric field analysis and structural optimization research on GIS gas chamber. Using Solidworks software to establish a three-dimensional model of GIS gas chamber structure and conduct limited Meta-analysis; Based on the electrostatic field theory, the electric field numerical calculation of the gas chamber model is carried out. The calculation results show that the electric field strength at the isolation fracture, grounding fracture, and insulating tie rods in the gas chamber is too high. The structure of these parts is optimized, and the optimized The gas chamber model is verified and calculated. The calculation results prove that the electric field intensity in the optimized GIS gas chamber is significantly lower than before, and the maximum value of the electric field strength is lower than the insulation strength of the alternative gas, and the alternative gas can meet the insulation requirements of the optimized air chamber.
- References:
- -
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