| 基于最小二乘法的自适应电流速断保护中系统参数的实时计算 |
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| 引用本文： | 牛祖蘅,袁兆强.基于最小二乘法的自适应电流速断保护中系统参数的实时计算[J].三峡大学学报(自然科学版),2007,29(5):411-414. |
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| 作者姓名： | 牛祖蘅 袁兆强 |
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| 作者单位： | 三峡大学,电气信息学院,湖北,宜昌,443002 |
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| 摘 要： | 对自适应电流速断保护中实时计算系统参数的算法进行了研究.提出了在系统发生故障时采用带补偿的全波傅氏算法,基于最小二乘法推导全波傅氏算法的补偿分量,并实时计算出系统的等值内电抗,然后再利用记忆在计算机存储器中的故障前的测量电压、电流采样值来计算系统等值内电势的相电势幅值Em.
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| 关 键 词： | 自适应电流速断保护 带补偿的全波傅氏算法 衰减直流分量 |
| 文章编号： | 1672-948X（2007）05-0411-04 |
| 修稿时间： | 2007-04-20 |
Algorithm of Correlative System Parameters of Adaptive Current Instantaneous Trip Protection Based on Least Square Method |
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| Niu Zuheng,Yuan Zhaoqiang.Algorithm of Correlative System Parameters of Adaptive Current Instantaneous Trip Protection Based on Least Square Method[J].Journal of China Three Gorges University(Natural Sciences),2007,29(5):411-414. |
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| Authors: | Niu Zuheng Yuan Zhaoqiang |
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| Abstract: | The algorithm of correlative system parameters of adaptive current instantaneous trip protection is studied.An all-wave Fourier algorithm with compensation when faults occur in power system is presented.The compensate component is derived from least square method.Integrated system equivalent impedance is calculated in real-time;and then to calculate equivalent inner potential with the measured voltage and current in sampling signals before faults occur in computer memory. |
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| Keywords: | adaptive current instantaneous trip protection all-wave Fourier algorithm with compensation decaying DC component |
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