Analysis of 3D electric field and insulation optimization of oil-immersed inverted current transformer

This paper analyzes the main insulation structure of oil-immersed inverted current transformer, and establishes the structure model and mathematical model. The Finite Element Method (FEM) is adopted to simulate and compute 3D electric field of the current transformer. As a result, the distribution of 3D electric field can be obtained, and the location of maximum electric field strength can be found. The insulation structure of current transformer has been optimized to improve electric field distribution by using surface response method combined with genetic algorithms.