| 汽轮发电机不对称绕组结构下的绝缘温降计算与分析 |
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| 引用本文： | 顾德宝,李伟力,陈文彪.汽轮发电机不对称绕组结构下的绝缘温降计算与分析[J].大电机技术,2009(2). |
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| 作者姓名： | 顾德宝 李伟力 陈文彪 |
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| 作者单位： | 1. 哈尔滨理工大学,哈尔滨,150040
2. 大庆供电电器设备有限公司,黑龙江,大庆,163453 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 本文首先以一台大型空冷汽轮发电机为例,建立定子径向通风沟内三维流动和传热的物理模型和数学模型;然后给出求解域的边界条件和假设条件,基于CFD原理,采用有限体积法对定子三维流体场、温度场进行数值计算,并对不同主绝缘材料的三维温度场进行比较分析;最后,对定子绕组结构不对称情况下的绝缘温降进行了计算,并对不同主绝缘材料热性能所引起的绝缘温降变化情况进行对比分析,得出一些有益的结论.
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| 关 键 词： | 空冷汽轮发电机 不对称绕组 有限体积法 绝缘温降 主绝缘材料 |
Calculation and Analysis of Insulation Temperature Drop of Large Air-cooled Turbogenerator with Asymmetric Winding |
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| GU De-bao,LI Wei-li,CHEN Wen-biao.Calculation and Analysis of Insulation Temperature Drop of Large Air-cooled Turbogenerator with Asymmetric Winding[J].Large Electric Machine and Hydraulic Turbine,2009(2). |
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| Authors: | GU De-bao LI Wei-li CHEN Wen-biao |
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| Affiliation: | 1.Harbin University of Science and Technology;Harbin 150040;China;2.Power-supply Electrical Equipment Co.Ltd.;Daqing163453;China |
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| Abstract: | Firstly,eddy loss expressions of asymmetric winding for large air cooled turbogenerator,and the 3-D mathematical and physical model of flow and heat transfer inside the stator radial ventilation ducts are established in this paper.Then according to boundary conditions and hypothesis,the 3-D stator temperature field and fluid field are numerically calculated using finite volume method(FVM),and the different temperature field in different main insulation material is analyzed.Finally,the insulation temperature... |
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