How to analyze Transformer winding deformation

Transformer winding deformation is a critical factor that can affect the performance and reliability of a power transformer. Winding deformation can occur due to various reasons such as mechanical stress, thermal expansion, short circuits, or external forces. It is important to analyze the transformer winding deformation in order to assess its impact on the transformer operation and to determine the necessary corrective actions.
Sweep Frequency Response Analysis (SFRA) is one of the commonly used methods for analyzing transformer winding deformation. SFRA is a non-invasive diagnostic technique that is used to assess the mechanical integrity of transformer windings. By comparing the frequency response of the winding under test with a reference frequency response, SFRA can detect changes in the winding structure caused by deformation.
The SFRA analyzer tests the impedance of the transformer winding at different frequencies and generates a frequency response curve. Any deviation or shift in the frequency response curve from the reference curve is an indication of winding deformation. The analysis of the SFRA results can provide valuable information regarding the extent and nature of the winding deformation.
Interpreting the SFRA results needs expertise and experience in transformer diagnostics. The analysis of the frequency response curve can help in identifying the type of winding deformation, such as radial deformation, axial displacement, or angular misalignment. The severity of the deformation can also be assessed based on the magnitude of the frequency response deviations.
In case of significant winding deformation, corrective actions may be required to prevent further damage to the transformer. These actions may include mechanical adjustments, repair or replacement of the damaged winding, or reinforcement of the affected areas. SFRA analyzer can do timely detection and analysis of winding deformation, Iwhich can help in avoiding transformer failures and ensuring the reliable operation of the power transformer.
It is essental to analyze transformer winding deformation for assessing the condition of the transformer,  make sure the operation is safe and reliable. SFRA is a valuable diagnostic tool for detecting winding deformation and assessing its impact on the transformer performance. Through interpreting the SFRA results accurately and taking appropriate corrective actions, It can prevent catastrophic failures and extend the lifespan of the power transformers.