| 基于状态监测的汽轮发电机定子铁心温度标准值的确定 |
| |
| 引用本文： | 李俊卿,李和明.基于状态监测的汽轮发电机定子铁心温度标准值的确定[J].中国电机工程学报,2004,24(3):156-160. |
| |
| 作者姓名： | 李俊卿 李和明 |
| |
| 作者单位： | 华北电力大学电气工程学院,河北,保定,071003 |
| |
| 基金项目： | 华北电力大学重大项目预研基金(9408 号)资助 |
| |
| 摘 要： | 根据电机的基本理论,首先提出了汽轮发电机定子铁心温度与发电机的有功功率、无功功率、电枢端电压、铁心周围冷却介质温度等运行参数相关的数学模型,然后利用发电机各种正常运行工况下的大量数据,采用最小二乘法对定子铁心温度模型中的参数进行了辨识.利用辨识得到的定子铁心温度模型即可计算发电机在各种正常运行状态下定子铁心温度的标准值,以实现发电机的状态监测和早期故障诊断.最后以邢台电厂的QFSN-220-2型汽轮发电机为例对定子铁心温度模型进行了验证,结果表明该温度模型是正确的.
|
| 关 键 词： | 汽轮发电机 定子铁心 磁密 温度标准值 状态监测 |
| 文章编号： | 0258-8013(2004)03-0156-05 |
| 修稿时间： | 2003年9月8日 |
DETERMINATION OF STANDARD TEMPERATURE OF STATOR IRON-CORE IN TURBOGENERATOR FOR CONDITION MONITORING |
| |
| LI Jun-qing,LI He-ming.DETERMINATION OF STANDARD TEMPERATURE OF STATOR IRON-CORE IN TURBOGENERATOR FOR CONDITION MONITORING[J].Proceedings of the CSEE,2004,24(3):156-160. |
| |
| Authors: | LI Jun-qing LI He-ming |
| |
| Abstract: | In accordance with the basic theory of machine, the temperature model of stator iron-core in turbogenerator is firstly presented. The temperature of stator iron-core is related with the active power, reactive power, stator voltage and temperature of cooling material etc. The parameters of the temperature model of stator iron-core are identified using the Method of Least-Squares. The temperature model can be used to the determination of standard temperature of stator iron-core on various operating conditions in order to monitor generator operating and diagnosis faults. In the end, the temperature model is verified to be correct with the QFSN-220-2 turbo- generator in Xingtai power plant,China. |
| |
| Keywords: | Turbogenerator Stator iron-core Magnetic flux density Standard temperature Condition monitoring |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
