Abstract
In this paper, a method for predicting pressure drop and flow distribution in disc-type transformer windings in an oil forced and directed (OD) cooling mode is proposed. First, dimensional analyses are conducted to identify the independent dimensionless variables that affect pressure drop over and flow distribution in the winding. Next, parametric sweeps are performed with computational fluid dynamics (CFD) simulations under isothermal flow conditions. Finally, pressure drop and flow distribution results obtained from the simulations are correlated with the previously identified dimensionless variables to derive correlation equations. These equations have been verified over a range of different isothermal and non-isothermal flow cases and applied to identify the criteria for the occurrence of reverse flow resulting from a combination of pass inlet flow rate and winding geometry. In addition, the method provides an insight into the controlling parameters for determining the minimum oil velocity in horizontal cooling ducts.
Original language | English |
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Pages (from-to) | 1655 - 1664 |
Journal | IEEE Transactions on Power Delivery |
Volume | 32 |
Issue number | 4 |
Early online date | 15 Jun 2016 |
DOIs | |
Publication status | Published - 15 Jun 2016 |
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Dive into the research topics of 'Prediction of Pressure Drop and Flow Distribution in Disc Type Transformer Windings in an OD Cooling Mode'. Together they form a unique fingerprint.Impacts
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Reducing usage of fossil-oil-based insulating liquids in power transformers to deliver environmental, safety, and financial benefits.
Wang, Z. (Participant), Liu, Q. (Participant), Matharage, S. (Participant) & (Participant)
Impact: Society and culture, Economic, Policy, Environmental