Method and system for evaluating operation state of high-voltage cross-linked cable outdoor terminal

The invention discloses a method and a system for evaluating the operation state of a high-voltage cross-linked cable outdoor terminal, and belongs to the technical field of state evaluation of high-voltage cable equipment. The method comprises the following steps of: measuring the maximum temperature difference of a newly input outdoor terminal; if the maximum temperature difference is within a preset threshold, collecting maximum temperature difference data in different environments in a preset time period; selecting the maximum temperature difference data within the preset threshold from the maximum temperature difference data, and drawing a change trend chart; and according to the drop point of the maximum temperature difference of the change trend chart, evaluating the operation state of the newly input outdoor terminal. The method solves the engineering application problem of state evaluation of an existing high-voltage cable outdoor terminal, and is used for judging the abnormal condition of the high-v