| 水轮发电机励磁绕组匝间短路转子热应力计算与分析 |
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| 引用本文： | 李俊卿,王罗,李永刚,沈超.水轮发电机励磁绕组匝间短路转子热应力计算与分析[J].航空动力学报,2018,45(8):116-123. |
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| 作者姓名： | 李俊卿 王罗 李永刚 沈超 |
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| 作者单位： | 华北电力大学 电气与电子工程学院,河北 保定071000,华北电力大学 电气与电子工程学院,河北 保定071000,华北电力大学 电气与电子工程学院,河北 保定071000,国网河北省电力公司检修分公司,河北 石家庄050000 |
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| 基金项目： | 河北省自然科学基金项目(E2014502015) |
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| 摘 要： | 以三峡700 MW水轮发电机为例,基于传热学和热应力理论,建立转子磁极三维求解模型,并给出相关的基本假设与边界条件,最后采用有限元方法对热应力进行求解,得到在转子绕组匝间短路情况下的磁极热应力分布。在此计算的基础上,进一步研究了短路匝数变化与匝间短路位置变化对磁极热应力的影响。通过计算研究得出了很多有意义的结论,为匝间短路更深层次的研究奠定了基础,也为电机设计者以及相关研究工作提供一定的参考。
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| 关 键 词： | 水轮发电机 励磁绕组 匝间短路 有限元 热应力 |
| 收稿时间： | 2018/2/6 0:00:00 |
Calculation and Analysis of Rotor Thermal Stress for InterturnShort Circuit of Hydro generator Excitation Winding |
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| LI Junqing,WANG Luo,LI Yonggang and SHEN Chao.Calculation and Analysis of Rotor Thermal Stress for InterturnShort Circuit of Hydro generator Excitation Winding[J].Journal of Aerospace Power,2018,45(8):116-123. |
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| Authors: | LI Junqing WANG Luo LI Yonggang and SHEN Chao |
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| Institution: | School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071000, China,School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071000, China,School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071000, China and State Grid Hebei Maintenance Branch, Shijiazhuang 050000, China |
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| Abstract: | The Three Gorges 700 MW hydrogenerator was used as an example to establish a model of rotor magnetic pole. The thermal stress was solved by finite element method based on the theory of heat transfer and heat stress. Based on the relative basic assumptions and boundary conditions, the distribution of magnetic heat stress in case of winding interturn shortcircuit was given. On the basis of this calculation, the influence of the change of shortcircuit turns and the change of shortcircuit position on the magnetic heat stress was studied. Many meaningful conclusions have been obtained through computational research. The results lay the foundation for further study of the interturn shortcircuit, and provide some reference for the motor designers and related research work. |
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| Keywords: | hydro generator excitation winding interturn short circuit finite element thermal stress |
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