磁极椭圆度对1000mw高精度水轮发电机组不平衡磁拉力的影响

2022 International Conference on Environmental Science and Green Energy (ICESGE) Pub Date : 2022-12-09 DOI:10.1109/ICESGE56040.2022.10180380

Zhenwei Ji, Jiwen Zhang, Zhiwei Hu, Xingxing Huang, Tianyu Zhao, Zhengwei Wang

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引用次数: 0

摘要

转子变形是大型汽轮发电机的关键问题之一。以往的研究主要是计算汽轮发电机的不平衡磁拉力。巨型水轮发电机体积庞大，结构极其复杂，目前对其进行的相关UMP分析较少。本文采用二维瞬态有限元法计算了某1000mw水轮发电机转子的瞬态磁场，揭示了转子变形对其UMP的时域和频域影响。理论计算结果与实测结果吻合较好。研究结果可为结构复杂的大型水轮机组的制造和安装提供有科学价值的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of Magnetic Pole Ovality on the Unbalanced Magnetic Pull of a 1000 MW Hydro-generator Unit Installed with High Precision

Rotor deformation is one of the key problems of large turbine generators. Previous studies mainly calculated the unbalanced magnetic pull (UMP) of turbine generators. Giant hydroelectric generators are huge in size and extremely complex in structure, so there are few relevant UMP analyses about them up to now. This paper uses a two-dimensional transient finite element method to calculate the transient magnetic field and reveal the effect of rotor deformation on the UMP of a 1000 MW hydro-generator in the time and frequency domains. Theoretical calculations are in good agreement with field measurements. The results of this investigation can provide scientifically valuable guidance for the manufacture and installation of structurally complex giant hydraulic turbine units.

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2022 International Conference on Environmental Science and Green Energy (ICESGE)

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