Electrical Field Analysis and Optimizing of High Voltage Bushing Based on Maxwell

Abstract

Abstract-In this paper, it was mainly discussed the electrical field analysis of the high voltage outlet in the insulation structure, which was a part of the transformers manufacture. Firstly, the electrical field of 500kV transformers-outlet devices inside the enclosure was modeled in Maxwell electrostatics solution type and calculated under the industrial frequency withstands voltage with Finite Element Method. The calculation was used to analyze the intensity of electric field about the oil gaps and that around the equalizing ring surface. Then, a model simplification was made and the shape parameters were defined. Further optimizations from the Maxwell optimetrics department were used to search for the optimal solutions. At last, the solutions were reused in the former model and we could contrast the safety factor of the oil gaps and the intensity of the equalizing ring. The result turned out to be effective to optimize the high voltage outlet in the insulation structure.