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![Figure 9. Disc slip ring structure diagram [15].](publication/360997843/figure/fig4/AS:1165357905649667@1654854384719/Disc-slip-ring-structure-diagram-15_Q320.jpg)
With the aim to solve the problem of the non-linear phenomenon of the satellite power system under the influence of the space environment factors, which threatens the stability of the power system, in this paper, the abnormal charging and discharging of solar arrays and solar array drive assembly (SADA) induced by the space plasma environment and a...
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... In recent years, mechanism analysis and ground equivalent experiments have confirmed the risk of space arc faults in SADA slip rings [8][9][10]. The power system experiences faults such as reduced solar array power supply capacity, frequent changes in the SR operation modes, reduced bus voltage quality, and even ablation of the solar wings [11], depending on the working conditions and locations of the arc faults. Arc faults can be highly destructive and spread quickly, making them conditions and locations of the arc faults. ...
The solar array drive assembly (SADA) slip ring is a critical link that provides electrical power and electric signal transmission between solar arrays and satellite power systems, which is prone to arc faults in the space environment. If these arc faults cannot be detected and eliminated quickly enough, they will seriously threaten the safety of the satellite power system and the satellite. In this paper, a fast arc detection method based on fractal dimension is proposed that adapts to different operating modes of power systems. The detection method collects the current differential signal data flowing through the SADA slip ring, and, according to the trend of the fractal dimension change in this signal, the fault identification algorithm is designed for different operating modes of the power system to achieve real-time and rapid identification of arc faults. Finally, the effectiveness of the proposed method is demonstrated using test data under several different fault conditions.
