Abstract:With the rapid development of substation intelligence and automation, the diversity and complexity of substation equipment is increasing, which brings enormous pressure to grassroots personnel to conduct equipment status analysis. The traditional method of equipment evaluation is mostly based on the operating time and fault conditions of the equipment, combined with work experience for evaluation and analysis, and the results are subjective. In order to accurately evaluate the operation status of equipment, a method of equipment status evaluation based on weighted and weighted rank sum ratio is proposed. The first step is to select a large number of parameter data during equipment operation, construct an evaluation index system, adopt the entropy weight method to determine the weight coefficient of each index, and combine the rank sum ratio and weight to form a weighted rank sum ratio to achieve a comprehensive evaluation of the operation status of substation equipment. The rationality and feasibility of the method proposed in this article have been verified through verification and analysis of actual operating equipment and consistency verification of the results, which has certain promotion and application value for strengthening the scientific and accurate evaluation of equipment.