Research And Implement Of Condition Assessment Method For Power Transformation Equipment Based On Preventive Test

Transformation equipment is the important component of the power grid,its operation condition has great influence on the safety and reliability of the grid,which is the foundation to ensure the security and stability of power system.With the growing of China's power grid capacity and scale,it will not only cause great damage to the equipment itself,but also pose a great threat to the stability of main power grid,when the transformation equipment breaks down.As the result,the sustainability and reliability of power supplying will be affected badly,and cause serious economic losses and social influence.Therefore,carrying out the condition assessment for the transformation equipment is of great importance to make the targeted maintenance schedule,realize the condition maintenance,prolong the service life of equipment and improve the reliability of power supply.This article uses association rules to mine the relationship between the fault status parameters and characteristic status parameters,set up support and confidence matrix,which reflect the relationships between fault status and characteristic status;confidence signify the probability of certain fault status occurs when some characteristic status appeared abnormal,analytic hierarchy process can reduce uncertainty of the subjective intention with comparison of importance degree between two characteristic status parameters.This paper combines the two advantages to calculate the weights between fault and characteristic status parameters,its effectiveness is validated by an actual example.Finally,a condition assessment model based on association rules and hierarchical analysis is established.This model takes the preventive test data as the parameter source,and its function is realized by software.