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首页> 外文期刊>Electric power systems research >Analysis of slots in horizontal plates of T-beams in shell-form power transformers
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Analysis of slots in horizontal plates of T-beams in shell-form power transformers

机译：壳式电力变压器T型梁水平板上的缝隙分析

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摘要

A systematic analysis of the use of slots to reduce stray losses in the horizontal plates of the T-beams in shell-form power transformers is presented. In the paper, the horizontal plate of T-beams is modeled as a rectangular stainless steel plate subjected to a perpendicular uniform magnetic field generated by a Merritt coil. The results are compared with the values given by an analytical formula for calculating the losses in a stainless steel plate without slots. The following important design alternatives are analyzed and discussed: (1) plates with rounded slots; (2) plates with unrounded slots; (3) effect of width and length of one slot; (4) effect of the distance between slots; (5) effect of number of slots. It has been found that substantial loss reduction can be obtained when drilling a few slots. Measurements of flux densities were done for seven shell-form power transformers. Using the measurements we calculated the losses in the plates using formula. Using the results of the design alternatives the efficiency of the use of slots in plates of real T-beams was demonstrated. Finally, a structural analysis was made to study the impact of slots in an experimental slotted T-beam.
机译：提出了使用槽来减少壳式电力变压器中T形梁水平板上的杂散损耗的系统分析。在本文中，将T形梁的水平板建模为矩形不锈钢板，该板受到梅里特线圈产生的垂直均匀磁场的作用。将结果与分析公式给出的值进行比较，以计算不带槽的不锈钢板中的损耗。对以下重要的设计方案进行了分析和讨论：（1）带有圆槽的平板； （2）带有不圆槽的板； （3）一槽宽度和长度的影响； （4）插槽间距离的影响； （5）插槽数量的影响。已经发现，当钻几个槽时，可以大大降低损耗。对七个壳形电力变压器进行了磁通密度的测量。使用测量值，我们使用公式计算了板中的损耗。利用设计方案的结果，证明了在真实T型梁板上使用槽的效率。最后，进行了结构分析，以研究缝隙T型梁在实验中的影响。

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