GIL and three-post insulator state evaluation method

Abstract

The invention discloses a GIL and three-post insulator state evaluation method. The method comprises the following steps: constructing a GIL and three-post insulator geometric model and setting geometric parameters of the geometric model; establishing a multi-physics field coupling simulation model based on the geometric model, wherein the multi-physics field coupling simulation model is coupled with an electromagnetic field, a solid heat transfer field, a laminar flow field and a solid mechanical field; inputting material characteristic parameters in the multi-physics field coupling simulation model and establishing boundary conditions; inputting operation conditions and operating the multi-physics field coupling simulation model for solving; acquiring electric field distribution, temperature field distribution, fluid field distribution and stress field distribution of the GIL and the three-post insulator; and based on the electric field distribution, the temperature field distribution, the fluid field distribution and the stress field distribution, evaluating the states of the GIL and the three-post insulator. The method comprehensively considers the influence of fluid, temperature and solid-fluid heat transfer in the actual working condition, and the evaluation is more accurate.

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