TY - GEN
T1 - A Method of Small Current Grounding Fault Diagnosis Based on Catastrophe Value
AU - Chen, Lei
AU - Zhang, Longhui
AU - Liu, Feng
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - The distribution network usually adopts the operation mode of ungrounded neutral point or grounded through arc suppression coil to improve the stability of the system, but under these two working modes, the output current signal of the system is weak when a single-phase grounding fault occurs, which leads to the difficulty of fault diagnosis. In order to realize the diagnosis of small current grounding fault under these two working modes and improve the accuracy of small current grounding fault diagnosis technology in distribution automation (DA) system, through the analysis of the transient characteristics of the system when grounding fault occurs, combined with the relationship between the transient zero sequence current of fault line and non-fault line and the relationship between transient zero sequence voltage and zero sequence current when grounding fault occurs, Based on the sudden change value of zero sequence voltage and zero sequence current, a small current grounding fault identification method is presented. MATLAB is used to simulate the small current grounding system model of distribution network with ungrounded neutral and grounded through arc suppression coil, and the simulation results are analyzed to verify the accuracy of the proposed discrimination method.
AB - The distribution network usually adopts the operation mode of ungrounded neutral point or grounded through arc suppression coil to improve the stability of the system, but under these two working modes, the output current signal of the system is weak when a single-phase grounding fault occurs, which leads to the difficulty of fault diagnosis. In order to realize the diagnosis of small current grounding fault under these two working modes and improve the accuracy of small current grounding fault diagnosis technology in distribution automation (DA) system, through the analysis of the transient characteristics of the system when grounding fault occurs, combined with the relationship between the transient zero sequence current of fault line and non-fault line and the relationship between transient zero sequence voltage and zero sequence current when grounding fault occurs, Based on the sudden change value of zero sequence voltage and zero sequence current, a small current grounding fault identification method is presented. MATLAB is used to simulate the small current grounding system model of distribution network with ungrounded neutral and grounded through arc suppression coil, and the simulation results are analyzed to verify the accuracy of the proposed discrimination method.
KW - MATLAB
KW - distribution automation
KW - ground fault
KW - neutral point operation mode of distribution network
KW - small current grounding system
UR - http://www.scopus.com/inward/record.url?scp=85161367364&partnerID=8YFLogxK
U2 - 10.1007/978-981-99-1576-7_40
DO - 10.1007/978-981-99-1576-7_40
M3 - 会议稿件
AN - SCOPUS:85161367364
SN - 9789819915750
T3 - Springer Proceedings in Physics
SP - 435
EP - 447
BT - Proceedings of the 4th International Symposium on Plasma and Energy Conversion, ISPEC 2022
A2 - Dai, Dong
A2 - Zhang, Cheng
A2 - Fang, Zhi
A2 - Lu, Xinpei
PB - Springer Science and Business Media Deutschland GmbH
T2 - 4th International Symposium on Plasma and Energy Convention, ISPEC 2022
Y2 - 14 October 2022 through 16 October 2022
ER -