Health Status Evaluation of Urban Rail Tran-sit Traction Transformers Based on Analytic Hierarchy Process and Entropy Weight Meth-od
[Objective]The purpose of health status evalua-tion of the traction power supply equipment is to provide refer-ences for the operation,repair and maintenance of this equip-ment in urban rail transit.[Method]A health status evalua-tion model for urban rail transit traction transformer is estab-lished based on AHP(analytic hierarchy process)and EWM(entropy weight method).The hierarchical structure for evalu-ating the health status of the traction transformer is constructed based on the operation indicator data of the traction transform-er.The subjective weights of the evaluation indicators are cal-culated by using AHP through the expert judgment matrix,and the weights of the test indicators are solved by using EWM and then combined with the subjective weights.The health status score of the traction transformer is calculated according to the evaluation indicators to determine its overall health status,thereby predict its remaining service life and evaluate the im-pact of different maintenance methods on the service life.With the monitoring data of the traction transformer in a certain trac-tion substation as an example,the health status of the traction transformer is evaluated.[Result & Conclusion]The effec-tiveness of the proposed health status evaluation method for traction transformer is verified through examples.The evalua-tion method realizes unification of the subjective and objective factors of equipment status detection,and can be popularized and applied to the health status evaluation of other urban rail transit DC power supply equipment.
urban rail transittraction transformerhealth status evaluationAHPEWM
万方数据
维普
