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

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

3 Citaten (Scopus)

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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.

Originele taal-2	Engels
Titel	Proc. IEEE PES T&D Conference
Plaats van productie	Piscataway
Uitgeverij	Institute of Electrical and Electronics Engineers
Pagina's	816-821
Aantal pagina's	6
ISBN van geprinte versie	0-7803-8110-6
DOI's	https://doi.org/10.1109/TDC.2003.1335380
Status	Gepubliceerd - 2003
Extern gepubliceerd	Ja
Evenement	IEEE PES T&D Conference - Dallas, Verenigde Staten van Amerika Duur: 7 sep. 2003 → 12 sep. 2003

Congres

Congres	IEEE PES T&D Conference
Land/Regio	Verenigde Staten van Amerika
Stad	Dallas
Periode	7/09/03 → 12/09/03
Ander	IEEE PES T&D Conference, Dallas USA

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@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",

}

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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