| 大型汽轮发电机定子绕组温度水力模型 |
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| 引用本文： | 张锋,李和明,李永刚,牛永会. 大型汽轮发电机定子绕组温度水力模型[J]. 华北电力大学学报(自然科学版), 2003, 30(3): 17-19 |
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| 作者姓名： | 张锋 李和明 李永刚 牛永会 |
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| 作者单位： | 华北电力大学,电力工程系,河北,保定,071003 |
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| 摘 要： | 通过对发电机定子绕组发热及传热分析,用热网络法建立了基于稳态传热的发电机定子绕组温度水力模型,即正常运行条件下(无任何故障,运行状态良好),汽轮发电机定子绕组出水温度标准值的计算方法。为了改进发电机负荷变化时,出水温度滞后于电流变化的问题,提出了温度延时的改进方法。用多种运行工况的数据对温度水力模型进行了检验,通过与实测温度的对比,计算误差不大于2℃。
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| 关 键 词： | 汽轮发电机 温度水力模型 故障诊断 |
| 文章编号： | 1007-2691(2003)03-0017-03 |
| 修稿时间： | 2002-10-24 |
Thermohydraulic model for stator bar of large turbo generator |
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| ZHANG Feng,LI He-ming,LI Yong-gang,NIU Yong-hui. Thermohydraulic model for stator bar of large turbo generator[J]. Journal of North China Electric Power University, 2003, 30(3): 17-19 |
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| Authors: | ZHANG Feng LI He-ming LI Yong-gang NIU Yong-hui |
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| Abstract: | Through analyzing the heat generating and conducting of the stator winding, a thermohydraulic model for the stator bar is built. That is reckoning method for the criterion water temperature at the outlet when the generator is in normal condition. When generator load varies, water outlet temperature changes with current too, but at lower changing rate. The temperature lagging time is proposed. The thermohydraulic model has been verified by measured data and the temperature difference between prediction and measurement is less than 2℃. |
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| Keywords: | turbo generator thermohydraulic model fault diagnosis |
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