Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network
Aiming at the problem of insufficient sensitivity of existing fault location methods when single-phase grounding fault occurs in resonant grounding system of active distribution network, a fault location algorithm based on Manhattan average distance and cosine similarity is proposed. Firstly, the ne...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2023-03-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/220226219 |
| _version_ | 1797859034146013184 |
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| author | TAO Weiqing LI Xueting HUA Yuting XIAO Songqing WU Yan ZHANG Yingjie |
| author_facet | TAO Weiqing LI Xueting HUA Yuting XIAO Songqing WU Yan ZHANG Yingjie |
| author_sort | TAO Weiqing |
| collection | DOAJ |
| description | Aiming at the problem of insufficient sensitivity of existing fault location methods when single-phase grounding fault occurs in resonant grounding system of active distribution network, a fault location algorithm based on Manhattan average distance and cosine similarity is proposed. Firstly, the neutral point grounding method of distributed generator (DG) is defined and the influence of DG access is analyzed. Secondly, the transient zero-sequence current at both ends of each section of the fault feeder is decomposed by wavelet packet. Then the amplitude similarity is calculated by Manhattan average distance, and the waveform difference is compared based on cosine similarity. As a result, a comprehensive similarity criterion is constructed, and the fault section can be distinguished by comparing with the set threshold. Finally, the simulation model is built in DIgSILENT PowerFactory. Simulation result shows that the proposed method can locate faults accurately under different fault locations, different fault moments and different transition resistances. |
| first_indexed | 2024-04-09T21:22:58Z |
| format | Article |
| id | doaj.art-a5d8db2bf3124f1e83c0e5b4dc1d4496 |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-04-09T21:22:58Z |
| publishDate | 2023-03-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-a5d8db2bf3124f1e83c0e5b4dc1d44962023-03-28T03:31:10ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-03-0142213013810.12158/j.2096-3203.2023.02.015220226219Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution networkTAO Weiqing0LI Xueting1HUA Yuting2XIAO Songqing3WU Yan4ZHANG Yingjie5Anhui Province Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaAnhui Province Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaThe Energy Research Institute of Hefei Comprehensive National Science Center, Hefei 230031, ChinaState Grid Wuhu Power Supply Company of Anhui Electirc Power Co., Ltd., Wuhu 241000, ChinaAnhui Province Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaAnhui Province Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaAiming at the problem of insufficient sensitivity of existing fault location methods when single-phase grounding fault occurs in resonant grounding system of active distribution network, a fault location algorithm based on Manhattan average distance and cosine similarity is proposed. Firstly, the neutral point grounding method of distributed generator (DG) is defined and the influence of DG access is analyzed. Secondly, the transient zero-sequence current at both ends of each section of the fault feeder is decomposed by wavelet packet. Then the amplitude similarity is calculated by Manhattan average distance, and the waveform difference is compared based on cosine similarity. As a result, a comprehensive similarity criterion is constructed, and the fault section can be distinguished by comparing with the set threshold. Finally, the simulation model is built in DIgSILENT PowerFactory. Simulation result shows that the proposed method can locate faults accurately under different fault locations, different fault moments and different transition resistances.https://www.epet-info.com/dlgcjsen/article/abstract/220226219resonant grounding systemfault section locationwavelet packetmanhattan average distancecosine similaritydistributed generator(dg) |
| spellingShingle | TAO Weiqing LI Xueting HUA Yuting XIAO Songqing WU Yan ZHANG Yingjie Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network 电力工程技术 resonant grounding system fault section location wavelet packet manhattan average distance cosine similarity distributed generator(dg) |
| title | Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network |
| title_full | Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network |
| title_fullStr | Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network |
| title_full_unstemmed | Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network |
| title_short | Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network |
| title_sort | fault location of single phase grounding fault based on manhattan average distance and cosine similarity in distribution network |
| topic | resonant grounding system fault section location wavelet packet manhattan average distance cosine similarity distributed generator(dg) |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/220226219 |
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