TY - GEN
T1 - Disturbance Identification in Low-Voltage Direct Current Systems Based on Wavelet Transform
AU - Qin, Yifan
AU - Chen, Yong
AU - Li, Jianbiao
AU - Chang, Nana
AU - Song, Guobing
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - Low-voltage direct current (LVDC) system incorporates power electronic converters and new energy sources, which is different from traditional AC distribution systems. Identification of disturbance is crucial for system state monitoring and fault diagnosis. Firstly, this paper theoretically analyzed the transient information generated by capacitor switched on and fault process, clarifying the differences in their frequency characteristics. Secondly, wavelet decomposition and reconstruction techniques were employed to extract transient features in different frequency bands, and the classification and identification of capacitor switched on and fault disturbances were realized based on the differences in frequency characteristics. Finally, the effectiveness of the proposed method was verified through simulation.
AB - Low-voltage direct current (LVDC) system incorporates power electronic converters and new energy sources, which is different from traditional AC distribution systems. Identification of disturbance is crucial for system state monitoring and fault diagnosis. Firstly, this paper theoretically analyzed the transient information generated by capacitor switched on and fault process, clarifying the differences in their frequency characteristics. Secondly, wavelet decomposition and reconstruction techniques were employed to extract transient features in different frequency bands, and the classification and identification of capacitor switched on and fault disturbances were realized based on the differences in frequency characteristics. Finally, the effectiveness of the proposed method was verified through simulation.
KW - Low-voltage direct current system
KW - disturbance identification
KW - transient signal
KW - wavelet transform
UR - https://www.scopus.com/pages/publications/105011731744
U2 - 10.1109/PEDG62294.2025.11060077
DO - 10.1109/PEDG62294.2025.11060077
M3 - 会议稿件
AN - SCOPUS:105011731744
T3 - PEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems
SP - 1302
EP - 1307
BT - PEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2025
Y2 - 28 March 2025
ER -