Positioning Method of 10 kV Distribution Network Based on Wavelet Packet Transformation
In the case of complex distribution network line structures,the fault se ction positioning error is large and the accuracy is low.To this end,a fault section localization method based on wavelet packet transform for 10 kV distribution network is proposed.By using wavelet packet transform to extract the time-frequency characteristics of fault signals in 10 kV distribution networks,the improved wavelet packet energy spectrum relative entropy of each section of the fault path is compared to achieve fault section localization.The results show that the proposed method has a maximum positioning error of 0.2%in six fault sections,and is highly feasible.
wavelet packet transformation10 kV distribution networkfault section positioning
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