【摘要】：提出了一種基于原子分解和行波自然頻率的單端故障測距方法,首先采用FIR濾波器對(duì)故障電流進(jìn)行濾波,得到主自然頻率粗略成分,再運(yùn)用原子分解算法辨識(shí)出主自然頻率粗略值,利用該頻率值反饋調(diào)整FIR濾波器的參數(shù)并對(duì)故障電流重新濾波,最后采用原子分解算法精確辨識(shí)行波主自然頻率值并求得故障距離。EMTP聯(lián)合MATLAB的仿真結(jié)果表明,該方法具有很高的測距精度和可靠性,基本不受過渡電阻、故障類型及故障距離的影響。
[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.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;
【基金】：國家“十一五”科技支撐計(jì)劃資助項(xiàng)目(2013BAA-02B01)~~
【分類號(hào)】：TM762.25

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本文編號(hào)：2503305