Open AccessWavelet Analysis-Based Simulation Study Of Small-Current Ground Fault System Routing
Author(s) -
Rui Cai,
Yuchen Zhao,
Qian Wang,
Haorui Liu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2031/1/012036
Subject(s) - ground , wavelet , transient (computer programming) , earthing system , arc suppression , electromagnetic coil , fault (geology) , current (fluid) , wavelet transform , line (geometry) , engineering , electric power system , electronic engineering , computer science , power (physics) , electrical engineering , control theory (sociology) , geology , physics , seismology , mathematics , artificial intelligence , geometry , control (management) , quantum mechanics , operating system
Small-current grounding is commonly used in medium-voltage distribution networks in China, including ungrounded neutral points, grounding via arc extinguishing coil and resistance grounding. In this paper, the power system modeling simulation of the grounding system via arc extinguishing coil and the transient characteristics when single-phase grounding occurs are studied. The principles and methods for selecting the wavelet basis function in transient component line selection are given. Wavelet analysis of the line current is carried out. It is verified by simulation that the wavelet analysis method in the small current ground fault selection can compare the difference of different lines.