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Mechanical Deformation Diagnostics for Power Transformer

Author(s):

Ketan R. Gandhi , . K.D Polytechnic, Patan

Keywords:

Power Transformer, SFRA, Winding Deformation, FRA Traces, RLC Network

Abstract

Condition monitoring is a comprehensive program of data collection and analysis of these collected data will provide an early warning of a problem and identify the need for maintenance of the monitored machine in a planned and systematic manner before failure phenomenon occurrence. The transformer is considered to be a complex distributed network of electrical RLC components. Any physical damage to the transformer results in the changes of this RLC network. These small changes in the RLC network within the transformer are highlight in frequency response. Mechanical deformations in power transformer windings can be diagnosed by a reliable and powerful offline method called sweep frequency response analysis (SFRA). This method is based on comparing SFRA signatures or traces to baseline measurement. Any deviations may be attributed to mechanical deformations. A skilled observer can then examines the two curves for any significant differences.

Other Details

Paper ID: IJSRDV6I40099
Published in: Volume : 6, Issue : 4
Publication Date: 01/07/2018
Page(s): 40-43

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