Electric field calculation of high voltage circuit breaker using self-adaptation approach

In this paper, the direct self-adaptation grid scheme based on the calculation error distribution of electric field value has been presented. There are two main advantages of the proposed scheme: rational mesh with optimum density is automatically generated, and higher precision and efficiency can be achieved by employing the least unknown quantities of elements and nodes. Moreover, the validity of direct self-adaptive grid scheme are verified and applied to the electric field calculation of demonstration examples.