Significant failure rate observed at short-circuit testing of large power transformers

R.P.P. Smeets; L.H. te Paske; A.G.A. Lathouwers

doi:10.1109/TDC.2003.1335380

Significant failure rate observed at short-circuit testing of large power transformers

R.P.P. Smeets, L.H. te Paske, A.G.A. Lathouwers

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

Abstract

Recent experience shows that at initial access to short-circuit tests, 48% of the transformers (with power 25 MVA and above) fail to pass short-circuit tests. When only the change of winding reactance (in accordance with IEC standard 60076-5) is taken into account, the initial failure rate drops to 28%. These results are discussed in the context of the reported much smaller failure rate in service. It is concluded that although statistically every transformer faces several full short-circuits during its life, the current that really occurs at such a full short-circuit current is smaller than the rated short-circuit for which the transformer is designed. In the future, however, this gap will narrow due to more efficient utilisation of the networks and growth of energy consumption.

Original language	English
Title of host publication	Proc. IEEE PES T&D Conference
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	816-821
Number of pages	6
ISBN (Print)	0-7803-8110-6
DOIs	https://doi.org/10.1109/TDC.2003.1335380
Publication status	Published - 2003
Externally published	Yes
Event	IEEE PES T&D Conference - Dallas, United States Duration: 7 Sept 2003 → 12 Sept 2003

Conference

Conference	IEEE PES T&D Conference
Country/Territory	United States
City	Dallas
Period	7/09/03 → 12/09/03
Other	IEEE PES T&D Conference, Dallas USA

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TDC.2003.1335380

Cite this

@inproceedings{7a742f65446a4cb6aca4ed92f0d1db9f,

title = "Significant failure rate observed at short-circuit testing of large power transformers",

abstract = "Recent experience shows that at initial access to short-circuit tests, 48% of the transformers (with power 25 MVA and above) fail to pass short-circuit tests. When only the change of winding reactance (in accordance with IEC standard 60076-5) is taken into account, the initial failure rate drops to 28%. These results are discussed in the context of the reported much smaller failure rate in service. It is concluded that although statistically every transformer faces several full short-circuits during its life, the current that really occurs at such a full short-circuit current is smaller than the rated short-circuit for which the transformer is designed. In the future, however, this gap will narrow due to more efficient utilisation of the networks and growth of energy consumption.",

author = "R.P.P. Smeets and {te Paske}, L.H. and A.G.A. Lathouwers",

year = "2003",

doi = "10.1109/TDC.2003.1335380",

language = "English",

isbn = "0-7803-8110-6",

pages = "816--821",

booktitle = "Proc. IEEE PES T&D Conference",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "IEEE PES T&D Conference ; Conference date: 07-09-2003 Through 12-09-2003",

}

Significant failure rate observed at short-circuit testing of large power transformers. / Smeets, R.P.P.; te Paske, L.H.; Lathouwers, A.G.A.
Proc. IEEE PES T&D Conference. Piscataway: Institute of Electrical and Electronics Engineers, 2003. p. 816-821.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Significant failure rate observed at short-circuit testing of large power transformers

AU - Smeets, R.P.P.

AU - te Paske, L.H.

AU - Lathouwers, A.G.A.

PY - 2003

Y1 - 2003

N2 - Recent experience shows that at initial access to short-circuit tests, 48% of the transformers (with power 25 MVA and above) fail to pass short-circuit tests. When only the change of winding reactance (in accordance with IEC standard 60076-5) is taken into account, the initial failure rate drops to 28%. These results are discussed in the context of the reported much smaller failure rate in service. It is concluded that although statistically every transformer faces several full short-circuits during its life, the current that really occurs at such a full short-circuit current is smaller than the rated short-circuit for which the transformer is designed. In the future, however, this gap will narrow due to more efficient utilisation of the networks and growth of energy consumption.

AB - Recent experience shows that at initial access to short-circuit tests, 48% of the transformers (with power 25 MVA and above) fail to pass short-circuit tests. When only the change of winding reactance (in accordance with IEC standard 60076-5) is taken into account, the initial failure rate drops to 28%. These results are discussed in the context of the reported much smaller failure rate in service. It is concluded that although statistically every transformer faces several full short-circuits during its life, the current that really occurs at such a full short-circuit current is smaller than the rated short-circuit for which the transformer is designed. In the future, however, this gap will narrow due to more efficient utilisation of the networks and growth of energy consumption.

U2 - 10.1109/TDC.2003.1335380

DO - 10.1109/TDC.2003.1335380

M3 - Conference contribution

SN - 0-7803-8110-6

SP - 816

EP - 821

BT - Proc. IEEE PES T&D Conference

PB - Institute of Electrical and Electronics Engineers

CY - Piscataway

T2 - IEEE PES T&D Conference

Y2 - 7 September 2003 through 12 September 2003

ER -

Significant failure rate observed at short-circuit testing of large power transformers

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