Study On Condition Maintenance For Power Transformer Based On Extension Theory

As the ultimate element in the electric power system, the safe of operating of transformer is correlative with the safety of the power system, so the condition assessment is of great importance and studied based on Extension Theory in this thesis.In the aspects of transformer condition assessment, firstly, the multi-level and multi-stage framework of transformer condition assessment information is built, the target weights are figured out by the method of EAHP , then relation-matrix is figured out by quantitative analysis using the matter-element and relation-function, synthetic assessment of transformer condition assessment combined with qualitative and quantitative is realized. Then two examples are taken to prove the method in this paper to be correct and effective. At last with Delphi and SQL Server 2000 database, the transformer condition-based maintenance information management system has been set up and the system had been used to the ChangZhi power company.