STUDY OF METHODS OF INTERPRETATION OF MEASUREMENT RESULTS BY THE METHOD OF FREQUENCY RESPONSE ANALYSIS (FRA)

Abstract

This article analyzes the methods of interpretation of measurement results obtained as a result of diagnostics of power transformers by the method of amplitude-frequency response. The interpretation of the obtained results reveals numerical indices, their essence and indicates which numerical indices give a higher result at which deformations. Experimental and analytical data and articles from Google Academic, eLIBRARY, ProQuest, ELSEVER, IEEE Xlopre, ResearchGate and other scientific bases published in the last 20 years and related to the study of the frequency response analysis method were used for data collection. In interpreting measurement results obtained on operating power transformers, the frequency response analysis method of effect is plotted and the use of numerical indicators is discussed. While standard wiring schemes used for frequency response analysis method tests include an open circuit scheme from start to finish with respect to radial strain, winding shorting, and core positioning losses, the inter-axial capacitance scheme has a high level of accuracy in detecting axial strain damage, conductor warpage, and axial disk warpage. This research work will be a useful resource for future research work on detection and diagnosis of mechanical damage in power transformer.