Evaluation of transformer core and winding conditions from SFRA measurement results using statistical techniques for distribution transformers

• Main Authors: Ab Ghani S., Thayoob Y.H.Md., Ghazali Y.Z.Y., Khiar M.S.A., Chairul I.S.
• Other Authors: 56504019900
• Format: Conference paper
• Published: 2023
• Subjects: Correlation Coefficient; FRA; Standard Deviation; Statistics; Transformer; Electric transformers; Optimization; Stresses; Active parts; Cable fault; Core and windings; Correlation coefficient; Cross-correlation coefficient; Distribution transformer; Electrical problems; Electrical stress; Graphical comparison; High frequency; In-field; In-line; Lightning strikes; Malaysia; Measurement results; Standard deviation; Statistical techniques; Transformer core; Winding

Distribution transformers in TNB (Tenaga Nasional Berhad) Malaysia are exposed to thermal and electrical stresses. Those stresses are effecting the main mechanical active parts in transformer such as core and winding. In field, lightning strikes and cable faults may cause problem due to transformer...