Research Of Transformer Winding Deformation Detection Device

The power transformer is one of the core of the entire distribution lines, Powertransformer to the failure will impact on the transmission lines and it will lost much whenpower outages occurred. Transformer in the power grid will deform due to electric powerand the threat the grid of stability. To avoid the loss of power out age, it is necessary tocontinue the power transformer testing and evaluation of operational status.Since the1990s, the technology continues to improve so as the frequency response,frequency response (FRA) is becoming an increasingly popular technology for detectionand assessment of the external transformer windings operating conditions and structuralintegrity. The advantage of this technology is that it can detect the case without hanginghood of the transformer windings, so that the method has a strong practicability.This will is based on the frequency response method for winding detection deviceresearch. First, analysis the frequency response characteristics of the simulation usingMATLAB Simulink package, and draw the frequency response characteristic curve,summed up the characteristics of the frequency response curve of various types of windingdeformation. Second, the correlation coefficient and other auxiliary discriminant methodfor processing the frequency response curve to obtain quantitative results of the simulationwinding deformation. Microsoft Visual Studio2010C#language program is used tocompile the correlation coefficient method.Frequency Response Analysis using DDS technology is based on the AD9850chip.Design a continuous issue sine wave frequency sweep signal generator and the associatedauxiliary circuits, give the verification and simulation.