| 一种电力系统在线动态安全评价模式识别法研究 |
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| 引用本文： | 刘青松,侯锐.一种电力系统在线动态安全评价模式识别法研究[J].嘉兴学院学报,2007,19(3):19-22. |
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| 作者姓名： | 刘青松 侯锐 |
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| 作者单位： | 嘉兴学院机电工程学院,浙江嘉兴,314001 |
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| 摘 要： | 文章讨论了一种应用模式识别进行电力系统在线动态安全评价的方法,利用发电机摇摆过程中转子间的最大相对摇摆角与故障前各发电机输出的有功功率之间存在的连续映射关系,用高阶多项式作为判别函数,来逼近其映射.多项式的系数用最小二乘法拟合确定,结果显示较一般方法学习简单,速度较快,更适合多个预想事故情况下共用.
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| 关 键 词： | 模式识别 动态安全评价 高阶多项式 |
| 文章编号： | 1008-6781（2007）03-0019-04 |
| 收稿时间： | 2007-01-06 |
| 修稿时间： | 2007年1月6日 |
Study of a Pattern Recognition Method for the On-line Dynamic Security Assessment |
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| LIU Qing-song,HOU Rui.Study of a Pattern Recognition Method for the On-line Dynamic Security Assessment[J].Journal of Jiaxing College,2007,19(3):19-22. |
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| Authors: | LIU Qing-song HOU Rui |
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| Abstract: | This paper discusses a pattern recognition method for on-line dynamic security assessment.There are continuous mapping in that maximum relative angle between generator rotors in the swing process and the generator's real power before its operation failure.High order polynomial is used as discriminating function to approximate the continuous mapping.Coefficients of the polynomial are determined by the least square fitting,so its learning is simple and fast.The proposed method is more suitable for multiple contingencies. |
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| Keywords: | pattern recognition dynamic security assessment high order polynomial |
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