Abstract:
Frequent failures of transition joints were reported
mainly near to the crutch area of the paper insulated cable side of
the joints. In this paper, the authors present an estimation of the
electric field and temperature distribution in the paper insulated
cable side of a transition joint using simulations based on finite
element method for 3-D geometry, which, apparently did not get
much attention until now. It is found that non-linearities in
material properties result in drastic changes in the distribution of
electric field. The results indicate electric field enhancement near
crutch area. The effect of varying load current, and ambient
temperature on the peak electric field has been investigated. The
simulations are validated analytically. The results are considered
important for utilities and manufacturers.
