| 一种基于频率信号扰动的水轮机模型辨识方法 |
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| 引用本文： | 姜莹莹,陈光大,孟佐宏,周海果.一种基于频率信号扰动的水轮机模型辨识方法[J].大电机技术,2010(5). |
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| 作者姓名： | 姜莹莹 陈光大 孟佐宏 周海果 |
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| 作者单位： | 武汉大学,武汉,430072;湖南省电力公司电力试验研究院,长沙,410000 |
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| 摘 要： | 本文提出一种基于频率信号扰动的水轮机模型辨识方法。该方法首先应用GTS-3型水轮机调速系统多功能试验装置,进行水电站机组现场试验。然后,利用MATLAB系统辨识工具箱和遗传算法工具箱提供的相关方法,和现场采集的频率阶跃扰动下的实测数据进行水轮机模型的辨识。在对现场试验数据进行EMD滤波等预处理基础上,采用最小二乘、遗传算法及最小二乘+遗传算法的辨识方法分别对柘溪水电站8号机组的水轮机模型进行辨识,取得了良好的辨识效果。辨识结果表明,利用频率扰动辨识水轮机模型的方法不仅可行,且具有通用性强、易于现场实现及不影响机组正常运行等优点。
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| 关 键 词： | 水轮机 模型辨识 阶跃扰动 最小二乘法 遗传算法 |
A Method for Models Identification of Hydraulic Turbine Based on Frequency Step Disturbance |
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| JIANG Ying-ying,CHEN Guang-da,MENG Zuo-hong,ZHOU Hai-guo.A Method for Models Identification of Hydraulic Turbine Based on Frequency Step Disturbance[J].Large Electric Machine and Hydraulic Turbine,2010(5). |
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| Authors: | JIANG Ying-ying CHEN Guang-da MENG Zuo-hong ZHOU Hai-guo |
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| Affiliation: | JIANG Ying-ying1,CHEN Guang-da1,MENG Zuo-hong2,ZHOU Hai-guo1(1.Wuhan University,Wuhan 430072,China,2.Test Academe of Hunan Power Company,Changsha 410000,China) |
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| Abstract: | A method for the model identification of hydraulic turbine based on the step type frequency disturbance is proposed in this paper.By using the GTS-3 multifunctional tester for hydraulic turbine governing system,the field test with the frequency disturbance is conducted first,and then,after the data were pre-processed by the EMD filter,the least squares algorithm,genetic algorithm,and the combination of the two algorithms,provided by related toolbox of MATLAB,are applied respectively for the off line model i... |
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| Keywords: | hydraulic turbine models identification step disturbance least squares method genetic algorithm |
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