Method for optimizing single-ring grading ring at high-voltage end of power equipment in high-altitude area

The invention provides a method for optimizing a single-ring grading ring at a high-voltage end of power equipment in a high-altitude area. The method comprises the following steps: S1, carrying out geometric modeling on the power equipment and the single-ring grading ring; s2, converting the geometric model into a finite element model, and calculating to obtain electric field and potential distribution results under different single-ring grading ring geometric parameter combinations; s3, inputting the typical geometric parameters and the optimization indexes corresponding to the typical geometric parameters into a BP neural network to train the BP neural network; s4, inputting the atypical geometric parameters into the trained BP neural network, and predicting to obtain optimization indexes corresponding to the atypical geometric parameters; s5, constructing an objective function related to the optimization index, and performing extreme value optimization on the objective function by adopting a genetic algor