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The Research on the Temperature Field of Transformer Winding

Author: CuiWei
Tutor: LiYongGang；ZhangXiLe
School: North China Electric Power University
Course: Motor and electrical
Keywords: Dry-type transformers Temperature field Finite volume method Fluent Hot spot temperature
CLC: TM41
Type: Master's thesis
Year: 2011
Downloads: 143
Quote: 0
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Abstract


More and more important in increasing the capacity of a single transformer failure caused by the temperature rise problem more and more cases , transformer temperature field study . Transformer winding position of the most popular spots in the normal operation of an urgent need to know the current calculation of transformer winding temperature rise of traditional design methods have been difficult to meet the performance requirements , the issues raised in this context . Can be approximated by appropriate equivalent calculation model of the transformer , the finite volume method using Fluent to simulate the actual running time of the transformer winding temperature distribution transformer engineering design staff provides a temperature rise calculation , analysis methods , can prevent transformer design failure process appears unreasonable and lead to the temperature rise , which can avoid the economic losses caused thereby , has important practical significance . In this paper, do the following work: 1) familiar with and master the electromagnetic loss the dedicated software MF2D, based on the analysis of the structural and electrical dry-type transformers , calculate the dry-type transformers in the normal operation of the DC resistance loss and eddy loss , this the calculated winding districts volume loss density ; 2) on the basis of a detailed analysis of the dry-type transformers , to retain its influential part of the winding temperature and maintain the characteristics of the original structure as much as possible , through commercial software Fluent establish transformer calculated two-dimensional model , the equivalent of the model structure suitable for the dry type transformer winding temperature field calculation provides a reliable way for model simplification ; 3) the actual part of the electrical and structural characteristics of the model runtime parameter settings , combined with the calculated core , density of windings district loss , calculated on the normal operation of the winding temperature field analysis using Fluent simulation software ; verified the calculation results by the test data and reliable , in the range of allowable error inside ;

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Power transformers
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