| 水轮发电机组轴心轨迹分解研究 |
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| 引用本文： | 张飞,潘罗平,付婧. 水轮发电机组轴心轨迹分解研究[J]. 南水北调与水利科技（中英文）, 2011, 9(4): 43-46. DOI: 10.3724/SP.J.1201.2011.04043 |
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| 作者姓名： | 张飞 潘罗平 付婧 |
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| 作者单位： | 中国水利水电科学研究院,北京,100038 |
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| 摘 要： | 为探明不同负荷条件下影响混流式水轮发电机组轴心轨迹的因素,通过某电站实测数据分析了机组上导、下导与水导处轴心轨迹的情况。研究表明:不同工况下,水轮发电机组大轴轴心轨迹可以解析出由转频及其倍频确定的合成轴心轨迹。稳定工况下,机组大轴摆度轴心轨迹由转频及其倍频决定,轴心轨迹稳定;尾水管涡带部分负荷区水导处轴心轨迹可以进一步解析出由涡带频率决定的合成轴心轨迹,该轨迹确定了尾水管涡带部分负荷区水导摆度的轴心轨迹趋势,转频及其倍频以及其它因素增加了轴心轨迹的带宽。现场试验数据表明这一分解是合理的。
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| 关 键 词： | 水轮发电机组 轴心轨迹 分解 转频 倍频 特征 |
Research on Shaft Orbit Decomposition of Hydro-power Unit |
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| ZHANG Fei,PAN Luo-ping,FU Jing. Research on Shaft Orbit Decomposition of Hydro-power Unit[J]. South-to-North Water Transfers and Water Science & Technology, 2011, 9(4): 43-46. DOI: 10.3724/SP.J.1201.2011.04043 |
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| Authors: | ZHANG Fei PAN Luo-ping FU Jing |
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| Affiliation: | ZHANG Fei,PAN Luo-ping,FU Jing(China Institute of Water Resources and Hydropower Research,Beijing 100038,China) |
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| Abstract: | In order to find the shaft orbit principle of Francis hydraulic turbine-generator,shaft orbit nearing upper guide,lower guide and turbine guide has been analyzed through field test data on one unit.The research showed that synthesized shaft orbit determined by rotational frequency and its harmonics can be resolved from original shaft orbit.In stable work conditions,synthesized rotational frequency shaft orbit has decisive impact on the evolution of shaft orbit.While in partial load with draft tube vortex em... |
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| Keywords: | hydraulic turbine generator unit shaft orbit decomposition rotational frequency multiple frequencies characteristics |
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