基于Haar小波的输电线路故障快速分类方法

2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America Pub Date : 2006-08-01 DOI:10.1109/TDCLA.2006.311465

K. Silva, K. Dantas, B. A. Souza, N. Brito, F. Costa, J.A.C.B. Silva

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引用次数: 20

摘要

提出了Haar小波变换在输电线路故障分类中的应用。通过分析相电流细节系数的能量进行故障相位识别。此外，通过对中性点电流平滑系数的分析，可以将接地故障区分为相接地故障。用emtp模拟的故障对算法进行了评价。结果表明，该方法能够在故障发生后的前半个周期内，准确地识别出各种电力系统运行状态下的输电线路故障

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Haar Wavelet-Based Method for Fast Fault Classification in Transmission Lines

The application of Haar wavelet transform for fault classification in transmission lines is proposed. The faulted phases identification is carried out by the analysis of the energy of the detail coefficients of the phase currents. In addition, by the analysis of the smooth coefficients of the neutral current, the ground faults can be distinguished from phase to phase ones. The algorithm was evaluated with EMTP-simulated faults. The obtained results reveal that the proposed method can accurately identify transmission line faults from a wide variety of power system operating conditions, within the first half-cycle after the beginning of the fault

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来源期刊

2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America

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