Research On The Power Transformer State Maintenance And Fault Diagnosis Methods

As the hub of power system equipment, the safety and stability of power system, power transformer operation reliability directly affected. Power transformer condition maintenance is more of a preventive maintenance way, shorten maintenance outage time, reduce maintenance cost, improve the utilization ratio of equipment maintenance mode. To realise transformer state maintenance, it is necessary for accurate evaluation on the transformer state. As a result, the operating state of transformer timely and correctly grasp to transformer state maintenance and improve the reliability of power system operation has important practical significance.Combining with the engineering example, the electric power system transformer state detection system was designed. First on the basis of analyzing the realistic demand, from aspects of the scientific nature and feasibility and comprehensive consideration, transformer evaluation index system is constructed, aiming at transformer state has the characteristics of fuzzy and uncertainty, on the test data processing using fuzzy mathematics and mathematical statistics theory, choose triangular and trapezoidal membership function of test data, in order to more accurately realize the function of transformer fault diagnosis; According to the relevant national standards and guidelines established the corresponding evaluation model, realize the scientific evaluation of transformer state; Finally using VC++combined with SQL Server according to the library completed the design of power transformer state decision system, and is used to actually get better effect.