| 基于发电机扭矩的轴系快速疲劳损伤评价方法研究 |
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| 引用本文： | 鲁录义,王坤,李汪繁,孙庆,薛成勇.基于发电机扭矩的轴系快速疲劳损伤评价方法研究[J].中国电力,2017,50(5):1-6. |
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| 作者姓名： | 鲁录义 王坤 李汪繁 孙庆 薛成勇 |
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| 作者单位： | 1. 华中科技大学,湖北 武汉 430074; 2. 上海发电设备成套设计研究院,上海 200240; 3. 神华国华呼伦贝尔发电有限公司,内蒙古 呼伦贝尔 021025 |
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| 基金项目： | 国家科技重大专项（2012ZX06002-017-01-04） |
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| 摘 要： | 通过大型汽轮机组的全尺寸模型模态分析结合轴系扭振基础分析,提出了一种基于发电机扭矩的轴系扭振疲劳损伤评估方法,并采用瞬态分析的方法进行了验证。该方法可绕开测速齿轮和扭振传感器,直接利用发电机端电磁转矩进行疲劳损伤评价,同时也可与基于汽轮机机头扭角数据的轴系扭振损伤评估方法相配合,提高电厂轴系扭振疲劳损伤评估的可靠性和准确性。
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| 关 键 词： | 汽轮机发电机组 轴系扭振 疲劳分析 模态分析 电磁转矩 |
| 收稿时间： | 2017-03-01 |
Study on Fast Assessment of Shafting Fatigue Damage Based on Turbo-Generator Torque |
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| LU Luyi,WANG Kun,LI Wangfan,SUN Qing,XUE Chenyong.Study on Fast Assessment of Shafting Fatigue Damage Based on Turbo-Generator Torque[J].Electric Power,2017,50(5):1-6. |
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| Authors: | LU Luyi WANG Kun LI Wangfan SUN Qing XUE Chenyong |
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| Affiliation: | 1. Huazhong University of Science and Technology, Wuhan 430074, China; 2. Shanghai Power Equipment Research Institute, Shanghai 200240, China; 3. Shenhua Guohua Hulunbuir Electricity Generating Co., Ltd., Hulunbuir 021025, China |
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| Abstract: | Based on the full-scale model analysis coupled with the basic torsional vibration analysis, a method to assess the shafting torsional vibration fatigue damage is proposed and validated by using the transient numerical analysis. The method can evaluate the damage directly by using the generator’s electromagnetic torque instead of the speed measurement gear and the torsional vibration sensor. The results are consistent with those evaluated by the method adopting turbine-end torsion angle data. This method can improve the precision and accuracy of the torsional vibration fatigue damage assessment. |
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| Keywords: | steam turbine-generator torsional vibration fatigue analysis modal analysis electromagnetic torque |
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