Research Effectiveness Evaluation Of UHV Transformer Quality Control Based On Matter-Element Theory

With the development of the Ultra high voltage(UHV)Power Transmission Technology of the State Grid,the application of the UHV transformer is widely concerned.As the key equipment of UHV transmission project,the quality control of transformer will affect the operation of UHV power grid.Based on the analysis of the experience of the quality control of transformer at home and abroad,the influential factors of UHV transformer were analyzed.With the matter element theory and transformer quality control model,the quality control theory of transformer was provided.The effectiveness of quality control was evaluated comprehensively and the improvement measures and suggestions were given.Firstly,the relevant theories of the quality management of transformers were concluded,including the objectives,principles and processes of the transformer quality control.Secondly,the influential factors of UHV transformer quality is analyzed.According to the principle of system,the principle of criticality,the principle of hierarchy and the principle of accuracy,the Quality Control Evaluation Index system of the UHV transformer with four dimensions of manufacturing process,staff factor,management factor and production factor were constructed.Based on the Delphi method and the analytic hierarchy process,the weight of index with eighteen factors of the indication system was established.The determination of weight became the necessary condition for constructing the quality control model of the UHV transformer.Then,the quality control model of the UHV transformer was established with the matter element theory,and the influence factors that affect the quality control of the transformer were introduced in detailed.Finally,combined with the application of 1000kV Southeast-Nanyang-Jingmen UHV AC demonstration project,the significance of the quality control model of the UHV transformer is verified.The influence of manufacturing enterprise internal influencing factors on quality control effectiveness were considered.The matter-element theory was applied to evaluate the effectiveness of UHV transformer.Then a complete and scientific evaluation system for the quality control of UHV transformer was provided,which was verified by an actual engineering project.The quality control system of the UHV transformer not only provides a new theoretical reference for the transformer quality control,but also provides a guarantee to the safely and reliable operation of the UHV power grid.