• VISHAL M. PIMPALKAR

Power transformer is the most important device for reliable power system. While working with it, many faults may occur in it. Diagnosis of these faults can be done with lot of techniques. Here in this paper, transformer fault detection by Sweep Frequency Response Analysis (SFRA) technique has been introduced. The SFRA is nothing but monitoring the change occur in the transformer R-L-C network parameter. SFRA measurement can be done by using sweep frequency of the range of 20 Hz to 20 MHz range. These sweep frequencies applied to transformer in healthy and faulty condition. SFRA gives the results in the form of signature curve in both healthy and faulty cases. This obtained signature curve confirms the exact location of fault. This paper presents simulation study of transformer equivalent circuit with implementation of SFRA technique and shows the SFRA results with both healthy and faulty condition.

Power transformer, winding deformation, axial and radial deformation, sweep frequency, signature curve, sweep frequency response analysis.

"APPLICATION OF SWEEP FREQUENCY RESPONNSE ANALYSIS (SFRA) METHOD TO DETECT TRANSFORMER FAULT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.1-6, January-2021, Available :http://www.jetir.org/papers/JETIREK06001.pdf

"APPLICATION OF SWEEP FREQUENCY RESPONNSE ANALYSIS (SFRA) METHOD TO DETECT TRANSFORMER FAULT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp1-6, January-2021, Available at : http://www.jetir.org/papers/JETIREK06001.pdf