Journal ArticleDOI
Determination of nanosecond pulse parameters on transfer function measurement for power transformer winding deformation
Reads0
Chats0
TLDR
In this article, a comprehensive method for the determination of nanosecond square wave pulse parameters for transfer function evaluation of power transformer for winding deformation studies is presented, where a sweep frequency sine wave generator is used to excite the different modes of resonance and anti-resonance.Abstract:
Transfer function method is now a widely acceptable tool to diagnose transformer winding deformations. A sweep frequency sine wave generator is often used to excite the different modes of resonance and anti-resonances. However, it is time consuming. Nanosecond square wave pulse signal offers an alternative that can serve the same objective. However, as so far, there is no certain criterion for selecting pulse parameters. This paper provides a comprehensive method for the determination of nanosecond square wave pulse parameters for transfer function evaluation of power transformer for winding deformation studies.read more
Citations
More filters
Journal ArticleDOI
Detection of Power Transformer Winding Deformation Using Improved FRA Based on Binary Morphology and Extreme Point Variation
TL;DR: An improved FRA based on binary morphology and extreme point variation is proposed, which has a potential to realize cluster analysis of fault types.
Journal ArticleDOI
Diagnostic of transformer winding deformation fault types using continuous wavelet transform of pulse response
TL;DR: A novel winding deformation fault diagnostic technique which is modified from IFRA is proposed, the detected transient signals of pulse response are processed based on the continuous wavelet transform (CWT) algorithm, and the wavelet time-frequency diagram obtained shows better performance than the frequency response curves obtained by the conventional FFT on processing the transient signals.
Journal ArticleDOI
Transformer frequency response: a new technique to analyze and distinguish the low-frequency band in the frequency response analysis spectrum
TL;DR: Transformer life and condition assessment in smart monitoring applications in all aspects of power systems is considered, and advanced methods such as transfer function measurement are employed to determine the transformer condition.
Journal ArticleDOI
Evaluation of the Applicability of IFRA for Short Circuit Fault Detection of Stator Windings in Synchronous Machines
TL;DR: In this paper , the applicability of impulse frequency response analysis (IFRA) to detect the stator winding short circuit faults was discussed, and a solidstate nanosecond pulsed power source prototype was developed for resonant excitation of windings.
Journal ArticleDOI
Analysis of Transformer Winding Deformation Based on Magnetics-structure Coupled-field
TL;DR: In this paper, the transformer magnetic-structure coupled model is established based on the finite element method, and the simulation of electromagnetic field and structural field of the transformer is carried out.
References
More filters
Journal ArticleDOI
Transfer function method to diagnose axial displacement and radial deformation of transformer windings
TL;DR: In this article, a transfer function method is presented as a tool to detect axial displacement and radial deformation of transformer windings using two test transformers and detailed mathematical models were developed for the test objects and a comparison was carried out between measured and calculated results.
Journal ArticleDOI
Monitoring of power transformers using the transfer function method
Thomas Leibfried,K. Feser +1 more
TL;DR: The transfer function concept is well known as an additional method of evaluating the impulse test of power transformers in the test laboratory and another application for this method is monitoring of power transformer in service as discussed by the authors.
Journal ArticleDOI
Advanced transformer winding deformation diagnosis: moving from off-line to on-line
TL;DR: In this article, the authors have concentrated on issues arising while on-line transformer winding deformation diagnosis is going to be applied on transformers with various kinds of techniques, such as frequency response analysis (FRA), short circuit impedance measurement and transfer function measurement.
Journal ArticleDOI
A Novel Online Technique to Detect Power Transformer Winding Faults
Ahmed Abu-Siada,Syed Islam +1 more
TL;DR: In this paper, a novel online technique is introduced to detect the internal faults within a power transformer by constructing the voltage-current (V - I) locus diagram to provide a current state of the transformer.
Journal ArticleDOI
Frequency response analysis and short-circuit impedance measurement in detection of winding deformation within power transformers
TL;DR: In this paper, power transformers are considered to be the heart of the transmission and distribution sectors of electric power systems; monitoring their condition and diagnosing faults are important parts of the maintenance function.
Related Papers (5)
Calculation of Transients in Transformer Winding and Determination of Winding Parameters
Jovan Mikulović,Milan Savic +1 more