NDLI: Ratings of Oil Power Transformer in Different Cooling Modes

Content Provider	IEEE Xplore Digital Library
Author	Radakovic, Z. Sorgic, M. Van der Veken, W. Claessens, G.
Copyright Year	1986
Abstract	This case study shows the application of the calculation method based on the detailed thermal-hydraulic network model. The method is applied for the thermal design of oil power transformer of rated power 750 MVA in oil-directed, air-forced cooling mode; rated powers are also specified for oil-natural, air-forced and oil-natural, air-natural cooling modes. The results of the calculations using developed software for three cooling modes are compared with the results of the heat-run test of the transformer equipped with fiber-optic sensors. In addition to confirmation of the accuracy of the model, this paper demonstrates the full power of the integrated method (inner heating and outer cooling) for thermal calculations. All relevant components (pressure drops, oil flows, oil temperatures, etc.) in different cooling modes are obtained from the model and exposed in this paper.
Sponsorship	IEEE Power Engineering Society
Starting Page	618
Ending Page	625
Page Count	8
File Size	647372
File Format	PDF
ISSN	08858977
Volume Number	27
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Windings Cooling Conductors Temperature measurement Oil insulation Software transformer Hot-spot temperature oil-directed, air-forced (ODAF) cooling oil-natural, air-forced (ONAF) cooling oil-natural, air-natural (ONAN) cooling thermal design
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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Oil-Forced Versus Oil-Directed Cooling of Power Transformers

Decomposition of the Hot-Spot Factor

Calculation of temperature rise of windings for transformer with forced-directed oil

CAD for three phase ONAN cooling system transformers

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A new method for the calculation of the hot-spot temperature in power transformers with ONAN cooling

Hot-spot temperatures in dry-type transformer windings

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A new method for the calculation of the hot-spot temperature in power transformers with ONAN cooling

Ratings of Oil Power Transformer in Different Cooling Modes

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