Proceedings ArticleDOI
Modeling and location of faults in power transformer using Transfer Function and Frequency Response Analysis
Paulraj. T,Hari Kishan Surjith. P,Dhana Sekaran. P +2 more
- pp 83-87
TLDR
Transfer Function Method and Frequency Response Analysis Method are used in this paper, in order to locate the winding fault and the end result obtained for the different fault condition is compared with the reference set and the conclusions are drawn.Abstract:
Power transformer is the most expensive single element of HV transmission system. Partial Discharge, mechanical displacement of the winding and inter-turn fault is commonly encountered problem in power transformer. This minor fault may lead to irretrievable damage. Transfer Function Method and Frequency Response Analysis Method are used in this paper, in order to locate the winding fault. The end result obtained for the different fault condition is compared with the reference set and the conclusions are drawn. Simulation is done with Orcad-Pspice and its results are verified with experimental setup.read more
Citations
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A Transformer Fault Diagnosis Model Using an Optimal Hybrid Dissolved Gas Analysis Features Subset with Improved Social Group Optimization-Support Vector Machine Classifier
TL;DR: A fault diagnostic method integrating feature selection and diagnostic model optimization is proposed that achieves the highest accuracy of fault diagnose (92.86%).
Proceedings ArticleDOI
Development of a Magnetic Field Measurement Based Scheme for Detection and Localization of Inter-Disc Faults in Transformer Windings by Finite Element Method
TL;DR: In this paper, the authors deal with the formulation of a generalized approach by finite element method (FEM) based on magnetic flux distribution for finding the presence of inter-disc fault and calculation of severity and location of faults in the winding.
Effect of the asymmetrical axial displacement of transformer windings on fra characteristics
TL;DR: In this article, the first disk of the LV winding was simulated and FRA characteristics were obtained for these cases, and experimental tests were performed on an experimental transformer to validate the simulation results.
Journal ArticleDOI
High Frequency Modeling of Transformer Using Black Box Frequency Response Analysis
Proceedings ArticleDOI
LCL filter startup diagnostics for an Active Front End converter
Neeraj Agrawal,Vinod John +1 more
TL;DR: In this paper, an algorithm based on Fast Fourier Transform (FFT) of the LCL filter step response is used to detect variation of filter components, which can be extended to consider conditions of short circuit and open circuit of filter component.
References
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Journal ArticleDOI
Diagnosing transformer faults using frequency response analysis
TL;DR: In this article, the authors measured the impedance of transformer windings over a wide frequency range and compared the results with reference data using a network analyzer to sweep the frequency range, make the measurements, and analyze the results.
Proceedings ArticleDOI
Methods for comparing frequency response analysis measurements
TL;DR: In this article, the authors present and evaluate a number of methods for comparing the results of frequency response analysis (FRA) measurements on power and distribution transformers, considering the importance of avoiding both false positive and false negative results.
Proceedings ArticleDOI
Transformer diagnosis using frequency response analysis: results from fault simulations
TL;DR: In this article, the authors present an assessment of which faults can be detected using frequency response analysis (FRA) and how different faults may be distinguished using the test method and the method used by the author for presenting the results.
Journal ArticleDOI
Interleaved High-Voltage Transformer Windings
TL;DR: In this article, the authors report the discovery that the original and most commonly used form of interleaved winding has an unexpectedly large internal oscillatory response to chopped-wave or front-of-wave impulse (lightning surge) voltages.
Proceedings ArticleDOI
Comparison between the high frequency characteristics of transformer interleaved and ordinary disk windings
TL;DR: In this paper, the authors examined an interleaved and an ordinary disk winding of the same size and structure using a new transformer model and software package developed by Electricite de France.
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