Identification of interturn faults in power transformers by means of generalized symmetrical components analysis
The paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay protection by calculation of components most...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2019-01-01
|
Series: | E3S Web of Conferences |
Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/66/e3sconf_eece18_04007.pdf |
id |
doaj-7d4f2e715fa94219807d469ea1b37eb0 |
---|---|
record_format |
Article |
spelling |
doaj-7d4f2e715fa94219807d469ea1b37eb02021-02-02T06:13:49ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011400400710.1051/e3sconf/201914004007e3sconf_eece18_04007Identification of interturn faults in power transformers by means of generalized symmetrical components analysisIvanchenko Daniil0Smirnov Artem1Saint-Petersburg Mining University, Department of Electrical EngineeringSaint-Petersburg Mining University, Department of Electrical EngineeringThe paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay protection by calculation of components most sensitive to interwire faults from transformer current. In order to study internal faults in transformer, the model in Simulink MATLAB was developed on the basis of transformer constitutive equations. Transformer with short circuited wires was simulated as a multiwinding transformer. We provide the calculation of transformer parameters. Model was applied for analysis of transients in power transformers, such as interwire fault, transformer inrush, and fault in transformer connections. Analysis of power transformer internal faults by means of time-dependent symmetrical components of currents is provided. These symmetrical components were calculated for the first harmonic of current by means of discrimination of firs harmonic by low-pass filter and compensating elements implementing phase shift. Described method allows calculation of symmetrical components during transient and under non-sinusoidal conditions. Simulation results showed the advantage of instantaneous symmetrical components of other direct values. Those components were implemented in relay protection algorithms for identification of internal faults in transformers.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/66/e3sconf_eece18_04007.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ivanchenko Daniil Smirnov Artem |
spellingShingle |
Ivanchenko Daniil Smirnov Artem Identification of interturn faults in power transformers by means of generalized symmetrical components analysis E3S Web of Conferences |
author_facet |
Ivanchenko Daniil Smirnov Artem |
author_sort |
Ivanchenko Daniil |
title |
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
title_short |
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
title_full |
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
title_fullStr |
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
title_full_unstemmed |
Identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
title_sort |
identification of interturn faults in power transformers by means of generalized symmetrical components analysis |
publisher |
EDP Sciences |
series |
E3S Web of Conferences |
issn |
2267-1242 |
publishDate |
2019-01-01 |
description |
The paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay protection by calculation of components most sensitive to interwire faults from transformer current. In order to study internal faults in transformer, the model in Simulink MATLAB was developed on the basis of transformer constitutive equations. Transformer with short circuited wires was simulated as a multiwinding transformer. We provide the calculation of transformer parameters. Model was applied for analysis of transients in power transformers, such as interwire fault, transformer inrush, and fault in transformer connections. Analysis of power transformer internal faults by means of time-dependent symmetrical components of currents is provided. These symmetrical components were calculated for the first harmonic of current by means of discrimination of firs harmonic by low-pass filter and compensating elements implementing phase shift. Described method allows calculation of symmetrical components during transient and under non-sinusoidal conditions. Simulation results showed the advantage of instantaneous symmetrical components of other direct values. Those components were implemented in relay protection algorithms for identification of internal faults in transformers. |
url |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/66/e3sconf_eece18_04007.pdf |
work_keys_str_mv |
AT ivanchenkodaniil identificationofinterturnfaultsinpowertransformersbymeansofgeneralizedsymmetricalcomponentsanalysis AT smirnovartem identificationofinterturnfaultsinpowertransformersbymeansofgeneralizedsymmetricalcomponentsanalysis |
_version_ |
1724301745123753984 |