A Decentralized Fault Section Location Method Using Autoencoder and Feature Fusion in Resonant Grounding Distribution Systems

Li, Zi Jing; Lin, Shuyue; Guo, Mou Fa; Tang, J.

Abstract

In industrial applications, the existing fault location methods of resonant grounding distribution systems suffer from low accuracy due to excessive dependence on communication, lack of field data, difficulty in artificial feature extraction and threshold setting, etc. To address these problems, this study proposes a decentralized fault section location method, which is implemented by the primary and secondary fusion intelligent switch (PSFIS) with two preloaded algorithms: autoencoder (AE) and backpropagation neural network. The relation between the transient zero-sequence current and the derivative of the transient zero-sequence voltage in each section is analyzed, and its features are extracted adaptively by using AE, without acquiring network parameters or setting thresholds. The current and voltage data are processed locally at PSFISs throughout the whole procedure, making it is insusceptible to communication failure or delay. The feasibility and effectiveness of the approach are investigated in PSCAD/EMTDC and real-time digital simulation system, which is then validated by field data. Compared with other methods, the experiment results indicate that the proposed method performs well in various scenarios with strong robustness to harsh on-site environment and roughness of data.

Citation

Li, Z. J., Lin, S., Guo, M. F., & Tang, J. (2022). A Decentralized Fault Section Location Method Using Autoencoder and Feature Fusion in Resonant Grounding Distribution Systems. IEEE systems journal, https://doi.org/10.1109/JSYST.2022.3151630

• Journal Article Type: Article
• Acceptance Date: Feb 7, 2022
• Online Publication Date: Mar 4, 2022
• Publication Date: 2022
• Deposit Date: Apr 29, 2022
• Publicly Available Date: May 12, 2022
• Journal: IEEE Systems Journal
• Print ISSN: 1932-8184
• Electronic ISSN: 1937-9234
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1109/JSYST.2022.3151630
• Keywords: Autoencoder (AE); Backpropagation neural network; Fault section location; Resonant grounding (RG) distribution systems
• Public URL: https://hull-repository.worktribe.com/output/3983665