干式空心电抗器温度场计算与试验分析

发布时间：2018-03-01 12:41

本文关键词： 干式空心电抗器损耗计算流体场温度场有限容积法温升试验　出处：《电工技术学报》2017年03期 　论文类型：期刊论文

【摘要】：基于电磁学和传热学理论,建立干式空心电抗器三维温升计算模型,首次考虑了星形支架损耗对包封热点温度的影响。应用损耗分离方式计算包封和星形支架的热源,采用有限容积法直接求解电抗器流体场与温度场,获得电抗器温度场分布特性,分析并总结包封轴向及径向温度分布规律。计算结果表明:星形支架损耗为包封损耗的3.7%,对包封热点温度的影响约为3 K。最后,通过电抗器温升试验验证了温度场计算的准确性,为干式空心电抗器温升计算以及温升监测提供了理论基础和参考依据。
[Abstract]:Based on the theory of electromagnetism and heat transfer, the three-dimensional temperature rise calculation model of dry hollow reactor is established, and the influence of the loss of the star support on the encapsulation hot spot temperature is considered for the first time. The heat source of the encapsulation and star support is calculated by using the loss separation method. The fluid field and temperature field of reactor are directly solved by the finite volume method, and the temperature field distribution characteristics of reactor are obtained. The distribution of axial and radial temperature of the encapsulation is analyzed and summarized. The calculated results show that the loss of the star support is 3.7% of the encapsulation loss, and the effect on the encapsulation hot spot temperature is about 3K. finally, The accuracy of temperature field calculation is verified by temperature rise test of reactor, which provides theoretical basis and reference basis for temperature rise calculation and temperature rise monitoring of dry hollow reactor.
【作者单位】：国网鄂州供电公司;武汉大学电气工程学院;
【分类号】：TM47

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