中圖分類號： TM773
文獻標識碼： A
DOI：10.16157/j.issn.0258-7998.212354
中文引用格式： 王毅，李曙，李松濃，等. 基于自校驗孿生神經網絡的故障區(qū)段定位方法[J].電子技術應用，2022，48(7)：60-66，73.
英文引用格式： Wang Yi，Li Shu，Li Songnong，et al. Fault segment location method based on self-checking siamese convolutional neural network[J]. Application of Electronic Technique，2022，48(7)：60-66，73.

Fault segment location method based on self-checking siamese convolutional neural network

Abstract： For medium voltage distribution network segment positioning method, aiming at the inaccurate positioning problem caused by environmental factors such as the system neutral point grounding way, the size of the distance and the transition resistance, as well as human factors such as current transformer polarity unknown or incorrect erection smart meters and so on, this paper puts forward a kind of stationary wavelet polarity check the fault section locating method based on siamese convolutional neural network(S-CNN). Firstly, the transient characteristics of zero-sequence current are analyzed, and the localization defects of traditional linear correlation method are pointed out. Secondly, the stationary wavelet transform(SWT) is used to solve the problems of signal synchronization and equipment reverse connection. Finally, S-CNN is introduced to perform similarity matching for upstream and downstream signals of the fault point, and the model can be trained to locate the fault segment accurately. The simulation results show that this method has strong anti-interference ability and high recognition rate for blind area.

Key words : ground fault；fault location；similarity analysis；stationary wavelet transform；siamese convolutional neural network