Corrosion and aging-based severity grade evaluation method for service environment of power grid equipment

The invention discloses a corrosion and aging-based severity grade evaluation method for a service environment of power grid equipment. The method comprises the following steps of S1, determining materials used by main parts of the power grid equipment; s2, acquiring corrosion and aging state parameter data of various materials; s3, establishing a relation model between the corrosion and aging states of various materials and the key performance of the materials, and further obtaining the function change of each part; and S4, evaluating the performance change of the whole power grid equipment according to the function change of each part, and determining the severity level of the service environment of the power grid equipment. The service environment severity grade evaluation is performed based on the corrosion and aging of the power grid equipment material, the influence of the long-term cumulative effect of the service environment on the power grid equipment is reflected, the service life of the power grid