Sweep frequency response analysis is a method of evaluating the winding deformation of a transformer by testing its frequency response. Transformer winding deformation can lead to transformer failure, and frequency response method can help identify and locate these deformations.
By conducting response testing on the input signal of the transformer, the response characteristics of the variable frequency signal can be determined. Using this data, the sweep frequency response of the transformer can be analyzed and its characteristics, such as common mode response and differential mode response, can be determined. Common mode response is caused by insulation damage caused by winding deformation, while differential mode response is caused by internal damage to the winding.
After sweep frequency response testing, the degree of damage to the windings of the transformer can be determined and whether further inspection or repair is needed. These data are important indicators for evaluating the health status and performance of transformers, and are also one of the key factors in preventing transformer failures and improving their lifespan.
