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- W2553537512 abstract "Frequency Response Analysis (FRA) is mostly utilized as an effective diagnosis and monitoring tool to detect typical mechanical defects, i.e., radial deformation and axial displacement, in power transformers. However, it is an off-line technique, i.e., the transformer should be out of service or disconnected to conduct the tests. This paper presents a novel online method based on the measurement of terminal current and voltage signals at the power frequency to distinguish between axial displacements and radial deformations in transformer windings. To demonstrate the feasibility of this method, an appropriate detailed RLCM model of the transformer winding is used and various defects are analyzed. The simulation results show the sensitivity and capability of the proposed technique for determining the extent and type of mechanical defects in power transformer windings. Furthermore, it is a straightforward technique applying the measured signals obtained from the existing metering equipments accessible in every substation and connected to power transformer and also the results can be interpreted by non-expert staff." @default.
- W2553537512 created "2016-11-30" @default.
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- W2553537512 date "2015-01-01" @default.
- W2553537512 modified "2023-09-27" @default.
- W2553537512 title "A Linear Feature for On-line Monitoring of Mechanical Defects in Transformer Windings" @default.
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