GENG Xiao-liang1, FAN Chun-hu1, AI Shao-gui2, et al. Finite Element Analysis of SF6 Current Transformer’s Structure Strength[J]. High voltageapparatus, 2007, (4): 250-252.
GENG Xiao-liang1, FAN Chun-hu1, AI Shao-gui2, et al. Finite Element Analysis of SF6 Current Transformer’s Structure Strength[J]. High voltageapparatus, 2007, (4): 250-252.DOI:
A three dimensional model of SF6 current transformer(CT) was built in this work.Using ABAQUS finite element software
the stress distribution of CT in different temperature was calculated
and the simulation of inner pressure test on porcelain through insulator(PTI) assembled with CT shell or two cover plates was conducted.The results show that there is high tensile stress on the coupling zone between PTI and upper flange
no matter whether in low or high temperature
which causes the PTI to break
and similar stress concentration phenomena appears in the inner pressure test when the PTI is assembled with the CT shell
whereas the phenomena does not exist when the PTI is assembled with two cover plates.Therefore
the failure pressure of the PTI with CT shell is lower than which of the PTI with two cover plates.