基于原子分解和行波自然频率的单端故障测距方法

发布时间：2019-06-20 14:51

【摘要】：提出了一种基于原子分解和行波自然频率的单端故障测距方法,首先采用FIR滤波器对故障电流进行滤波,得到主自然频率粗略成分,再运用原子分解算法辨识出主自然频率粗略值,利用该频率值反馈调整FIR滤波器的参数并对故障电流重新滤波,最后采用原子分解算法精确辨识行波主自然频率值并求得故障距离。EMTP联合MATLAB的仿真结果表明,该方法具有很高的测距精度和可靠性,基本不受过渡电阻、故障类型及故障距离的影响。
[Abstract]:A single terminal fault location method based on atomic decomposition and traveling wave natural frequency is proposed. Firstly, the fault current is filtered by FIR filter, and the rough components of the main natural frequency are obtained. Then the rough value of the main natural frequency is identified by the atomic decomposition algorithm. The parameters of the FIR filter are adjusted by the feedback of the frequency value and the fault current is refiltered. Finally, the atomic decomposition algorithm is used to accurately identify the main natural frequency value of traveling wave and obtain the fault distance. The simulation results of EMTP joint MATLAB show that the method has high location accuracy and reliability, and is basically not affected by transition resistance, fault type and fault distance.
【作者单位】： 武汉大学电气工程学院;
【基金】：国家“十一五”科技支撑计划资助项目(2013BAA-02B01)~~
【分类号】：TM762.25

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