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| The Method of Small Current Grounding Fault Line Selection based on EMD and FIR Filter |
| Yan Yan |
| Guangxi University of Electrical Engineering, Nanning 530004 |
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Abstract Aiming at the single phase to ground fault in small current grounding system, the transient component of zero sequence current of each line is complex, non-stationary, nonlinear, and the serious problem of noise interference, a new fault line selection method for small current grounding system is proposed. This method decomposes the zero sequence current of each line by EMD (empirical mode decomposition) algorithm, extraction of high frequency components, and using FIR filter to filter the high frequency component of zero sequence current of each line, selecting the most obvious effective band. Finally, by comparing the energy of the effective frequency band to select the line. The simulation results show that the method is accurate and reliable.
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Published: 19 April 2017
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| Cite this article: |
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Yan Yan. The Method of Small Current Grounding Fault Line Selection based on EMD and FIR Filter[J]. Electrical Engineering, 2017, 18(4): 56-60.
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http://dqjs.cesmedia.cn/EN/Y2017/V18/I4/56
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2017, Vol. 18 
