Novel technique to improve the fault detection sensitivity in transformer maintenance test

E. A. Al-Ammar, G. G. Karady, H. J. Sim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Early detection of incipient faults in transformer windings is important, so that required corrective measures can be taken to help prevent interruption during operation. Low voltage impulse (LVI) and sweep frequency response analysis (SFRA) tests have been widely adopted within the industry to determine a transformer winding's deformation. However, these tests have drawbacks, including limited frequency ranges for the LVI test and time-consuming measurements for the SFRA test. To obtain better signature analysis in the transformer maintenance test, especially detection of minor faults, this paper suggests a new input signal using a pulse sequence (PS) in the transfer function (TF) analysis. The results of the PS test are compared against the LVI and SFRA tests to complete the assessments, which are derived from experimental works on the 25 kVA distribution transformer. It is concluded that the PS method improves fault detection sensitivity significantly.

Original languageEnglish (US)
Pages (from-to)438-449
Number of pages12
JournalEuropean Transactions on Electrical Power
Volume20
Issue number4
DOIs
StatePublished - May 2010

Fingerprint

Transformer
Fault Detection
Fault detection
Frequency response
Transformer windings
Maintenance
Electric potential
Low Voltage
Frequency Response
Sweep
Impulse
Time measurement
Transfer functions
Fault
Industry
Transfer Function
Minor
Signature
Range of data

Keywords

  • Faults
  • FFT
  • FRA
  • LVI
  • PS
  • SFRA
  • Signature analysis
  • Transfer function
  • Transformer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Novel technique to improve the fault detection sensitivity in transformer maintenance test. / Al-Ammar, E. A.; Karady, G. G.; Sim, H. J.

In: European Transactions on Electrical Power, Vol. 20, No. 4, 05.2010, p. 438-449.

Research output: Contribution to journalArticle

Al-Ammar, E. A. ; Karady, G. G. ; Sim, H. J. / Novel technique to improve the fault detection sensitivity in transformer maintenance test. In: European Transactions on Electrical Power. 2010 ; Vol. 20, No. 4. pp. 438-449.
@article{37d460976551478d9a24e215126955d0,
title = "Novel technique to improve the fault detection sensitivity in transformer maintenance test",
abstract = "Early detection of incipient faults in transformer windings is important, so that required corrective measures can be taken to help prevent interruption during operation. Low voltage impulse (LVI) and sweep frequency response analysis (SFRA) tests have been widely adopted within the industry to determine a transformer winding's deformation. However, these tests have drawbacks, including limited frequency ranges for the LVI test and time-consuming measurements for the SFRA test. To obtain better signature analysis in the transformer maintenance test, especially detection of minor faults, this paper suggests a new input signal using a pulse sequence (PS) in the transfer function (TF) analysis. The results of the PS test are compared against the LVI and SFRA tests to complete the assessments, which are derived from experimental works on the 25 kVA distribution transformer. It is concluded that the PS method improves fault detection sensitivity significantly.",
keywords = "Faults, FFT, FRA, LVI, PS, SFRA, Signature analysis, Transfer function, Transformer",
author = "Al-Ammar, {E. A.} and Karady, {G. G.} and Sim, {H. J.}",
year = "2010",
month = "5",
doi = "10.1002/etep.327",
language = "English (US)",
volume = "20",
pages = "438--449",
journal = "International Transactions on Electrical Energy Systems",
issn = "1430-144X",
publisher = "John Wiley and Sons Ltd",
number = "4",

}

TY - JOUR

T1 - Novel technique to improve the fault detection sensitivity in transformer maintenance test

AU - Al-Ammar, E. A.

AU - Karady, G. G.

AU - Sim, H. J.

PY - 2010/5

Y1 - 2010/5

N2 - Early detection of incipient faults in transformer windings is important, so that required corrective measures can be taken to help prevent interruption during operation. Low voltage impulse (LVI) and sweep frequency response analysis (SFRA) tests have been widely adopted within the industry to determine a transformer winding's deformation. However, these tests have drawbacks, including limited frequency ranges for the LVI test and time-consuming measurements for the SFRA test. To obtain better signature analysis in the transformer maintenance test, especially detection of minor faults, this paper suggests a new input signal using a pulse sequence (PS) in the transfer function (TF) analysis. The results of the PS test are compared against the LVI and SFRA tests to complete the assessments, which are derived from experimental works on the 25 kVA distribution transformer. It is concluded that the PS method improves fault detection sensitivity significantly.

AB - Early detection of incipient faults in transformer windings is important, so that required corrective measures can be taken to help prevent interruption during operation. Low voltage impulse (LVI) and sweep frequency response analysis (SFRA) tests have been widely adopted within the industry to determine a transformer winding's deformation. However, these tests have drawbacks, including limited frequency ranges for the LVI test and time-consuming measurements for the SFRA test. To obtain better signature analysis in the transformer maintenance test, especially detection of minor faults, this paper suggests a new input signal using a pulse sequence (PS) in the transfer function (TF) analysis. The results of the PS test are compared against the LVI and SFRA tests to complete the assessments, which are derived from experimental works on the 25 kVA distribution transformer. It is concluded that the PS method improves fault detection sensitivity significantly.

KW - Faults

KW - FFT

KW - FRA

KW - LVI

KW - PS

KW - SFRA

KW - Signature analysis

KW - Transfer function

KW - Transformer

UR - http://www.scopus.com/inward/record.url?scp=77952055973&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952055973&partnerID=8YFLogxK

U2 - 10.1002/etep.327

DO - 10.1002/etep.327

M3 - Article

AN - SCOPUS:77952055973

VL - 20

SP - 438

EP - 449

JO - International Transactions on Electrical Energy Systems

JF - International Transactions on Electrical Energy Systems

SN - 1430-144X

IS - 4

ER -