Multi-source information based comprehensive condition evaluation model for power transformer

Abstract

So as to adapt to the condition-based maintenance of power equipment and to overcome the disadvantages and deficiencies of traditional condition evaluation model in data acquisition approaches, component classifications, performance indicators and scoring model, a comprehensive condition evaluation model (CCEM) was proposed in this paper based on multi-source information. Combined with the offline test, online detection, online monitoring, inspection and operating environment, equipment criteria, undesirable service condition (USC) and family defects were reclassified in this model. Practice example verified that the proposed model can describe the power transformer state more comprehensively and immediately. The evaluation results provide scientific guidance for front-line operation and maintenance staffs to develop equipment maintenance strategy, and also practical basis for the condition evaluation of other power equipment.