Proceedings ArticleDOI
Location of partial discharges in transformers
M. Gopalakrishnan,M.A. Paneerselvarn,R.B. Shreeshankar,S. Jayalalitha,V. Jayashankar +4 more
- pp 620-623
TLDR
In this article, a matched filter approach is proposed for the location of a partial discharge within a winding, which does not need isolation of the capacitively transferred components and can be applied to the determination of location of PD during impulse tests.Abstract:
A matched filter approach is proposed for the location of a partial discharge within a winding. The approach is very general and does not need isolation of the capacitively transferred components. Simulations are performed on a lumped parameter model of a layer winding to prove the feasibility of the method. Experiments are also performed on a layer winding in order to validate the method. It is possible to extend the method to the determination of location of PD during impulse tests.read more
Citations
More filters
Proceedings ArticleDOI
Simulation of a transformer winding for partial discharge propagation studies
TL;DR: In this article, a simulation model of a continuous disc type 6.6 kV transformer winding was used to study the propagation behavior of partial discharge (PD) pulses, where the position of the zeros in the frequency response of the measured current signals can be used to locate the source of the discharge.
Journal ArticleDOI
A hybrid transformer model for determination of partial discharge location in transformer winding
TL;DR: In this paper, a hybrid transformer model is introduced to simulate the transformer winding transient response to partial discharges in power transformers, where the transformer structural data is used to determine the hybrid model parameters.
Journal ArticleDOI
Frequency domain correlation technique for PD location in transformer winding
V. Jeyabalan,S. Usa +1 more
TL;DR: In this article, the limitation of time domain correlation method in locating partial discharge (PD) in transformer windings is found out, and frequency domain correlation with Gram Schmidt orthogonalization is proposed.
Journal ArticleDOI
Proposed method of partial discharge allocation with acoustic emission sensors within power transformers
TL;DR: In this article, a method based on a heuristic algorithm has been proposed which considering all possible indirect paths with the relevant propagation times and all the barriers on the travel path of acoustic signal, calculates the more precise arrival times to sensors.
Proceedings ArticleDOI
Online partial discharge detection and location techniques for condition monitoring of power transformers: A review
TL;DR: In this paper, the authors discuss the evolution of various techniques in partial discharge measurement as a condition monitoring tool available for online measurement of field transformers and discuss the recent techniques used for partial discharge analysis with its advantages and suitability over conventional method for proper condition monitoring of large power transformers.
References
More filters
Book
Detection of signals in noise
Robert N. McDonough,A. D. Whalen +1 more
TL;DR: In underwater sonar systems, external acoustic noise is generated by waves and wind on the water surface, by biological agents (fish, prawns, etc.), and by man-made sources such as engine noise.
Journal ArticleDOI
A general method for determining resonances in transformer windings
TL;DR: In this article, the authors present a method for calculating terminal and internal impedance versus frequency for a lumped parameter model of a transformer, where the transformer's total frequency response can be accurately determined from this impedance data directly, i.e., the terminal resonance and anti-resonance and internal amplification factor characteristic can be calculated for a single or three-phase transformer model.
Journal ArticleDOI
Application of digital filtering techniques to the determination of partial discharge location in transformers
R.E. James,B.T. Phung,Q. Su +2 more
TL;DR: In this paper, the capacitatively transferred components of the input pulse along the windings in the appropriate frequency range were extracted by the aid of digital filtering techniques, and good agreement between measured and theoretical distributions was obtained.
Journal ArticleDOI
Partial Discharge Location in Power Transformers
TL;DR: In this paper, the authors used feature template matching to locate the source of partial discharge in a power transformer with a continuous disc type winding, which required knowledge about the physical geometry and design parameters of the transformer and also information about the characteristics of how the pulses caused by the PD propagate through the winding.
Journal ArticleDOI
Impulse testing of power transformers - a model reference approach
TL;DR: In this article, an objective classification of faults that can occur during impulse tests on power transformers is proposed, including nonlinear elements, breakdown, and partial discharge events, and an analysis of a layer winding, in the time and frequency domains, with these faults shows that current assessment methods must be used with caution.