Fault Analysis of Transformer Winding Based on Frequency Response Method

It is difficult to obtain the fault frequency response curve in the transformers actually running in the field, and the cost of large transformers is expensive. Most of the fault simulation is destructive test, and the simulation of winding fault needs to pay a high price. Therefore, in this paper, a fault simulation test platform for autotransformer winding is built for the series winding structure. A large number of axial shift, short circuit and parallel capacitor faults are simulated, and corresponding amplitude-frequency characteristic curves and phase-frequency characteristic curves are obtained, which can provide data basis for transformer winding fault diagnosis.