2025年4月3日 周四
首页 > 过刊浏览>2021年第36卷第3期 >141-147. DOI:10.19781/j.issn.1673-9140.2021.03.019
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12kV开关柜内部构件的涡流损耗研究
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全妤(1995-),女,助理工程师,硕士,主要从事变压器温度场反演和电能表计量研究;E-mail:546851303@qq.com

中图分类号:

TM51

基金项目:

湖北省自然科学基金(ZRMS201800853)


Study on the eddy current loss of internal components of 12 kV switch cabinet
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    摘要:

    在大电流开关柜运行时,涡流损耗所产生的发热现象严重。为研究开关柜中的涡流损耗,首先推导涡流损耗的计算方法,然后借助SolidWorks三维画图软件,根据图纸和现场测量建立开关柜磁场的简化计算模型。其次通过有限元仿真计算软件,分别计算母排在交直流加载条件下的损耗,指出集肤效应和邻近效应对母排发热的影响, 并对整个开关柜进行涡流场仿真计算,得到整个柜体的涡流损耗。最后根据计算结果提出优化建议。研究发现,开关柜柜体涡流损耗很大,总值达到3831.66 W,在开关柜的温升计算中是不可忽略的。

    Abstract:

    In the operation of large current switch cabinet, the thermal phenomena caused by eddy current losses is serious. In order to study the eddy current loss in the switch cabinet, a calculation method of eddy current loss is derived in this paper. Then a simplified switch cabinet model for the magnetic field calculation is established by SolidWorks. In addition, the losses of busbar in AC and DC load conditions are calculated through the finite element simulation software. It is found that the skin effect and proximity effect have influences on the busbar heating. Then the eddy current field of the entire switch cabinet is simulated and the eddy current loss for entire cabinet is obtained. Finally, several optimized suggestions are put forward according to the calculation results. It is found that eddy current loss in switch cabinet is large, which reaches 3 831.66 W. Therefore, the eddy current loss cannot be ignored in the calculation of temperature rise in the switch cabinet.

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全妤,金颀,林桐,等.12kV开关柜内部构件的涡流损耗研究[J].电力科学与技术学报,2021,36(3):141-147.
Quan Yu, Jin Ken, Lin Tong, et al. Study on the eddy current loss of internal components of 12 kV switch cabinet[J]. Journal of Electric Power Science and Technology,2021,36(3):141-147.

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