A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices
The distribution network can continue to operate for a short time once a single-phase grounding fault arises, but if the defect is not monitored and corrected right away, it might cause serious harm. However, the bulk of fault monitoring algorithms struggle to identify faults when applied to complex...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484723007199 |
| _version_ | 1797781877993504768 |
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| author | Dong Liang Zilun Wang Hu Liu Kaiwen Zhang Yang Wang |
| author_facet | Dong Liang Zilun Wang Hu Liu Kaiwen Zhang Yang Wang |
| author_sort | Dong Liang |
| collection | DOAJ |
| description | The distribution network can continue to operate for a short time once a single-phase grounding fault arises, but if the defect is not monitored and corrected right away, it might cause serious harm. However, the bulk of fault monitoring algorithms struggle to identify faults when applied to complex distribution networks with a tree structure. In this article, a fault online monitoring method based on power line communication equipment is proposed. The method identifies the fault by monitoring the change of channel frequency response (CFR) of the distribution network in real-time, locates the fault branch by comparing the change amplitude of CFR of different receiving devices, calculates the impedance amplitude of the fault branch, and combines the relation between impedance and distance to further realize the accurate location of the fault point. A large number of simulations show that the method is accurate and stable, and can effectively monitor both high and low-resistance ground faults. Under the simulation conditions without considering signal interference, the fault branch detection accuracy reaches 100%, and the average error of fault distance localization is 19.38 m (1.98%). Compared with other methods, this method is highly applicable, with good real-time performance and high positioning accuracy. |
| first_indexed | 2024-03-13T00:03:07Z |
| format | Article |
| id | doaj.art-bceb4c6c3528406293b2d4be26397c3a |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-03-13T00:03:07Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-bceb4c6c3528406293b2d4be26397c3a2023-07-13T05:30:06ZengElsevierEnergy Reports2352-48472023-12-01952875298A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devicesDong Liang0Zilun Wang1Hu Liu2Kaiwen Zhang3Yang Wang4Corresponding author.; Xi’an Key Laboratory of Intelligent Energy, Xi’an University of Technology, Xi’an 710065, ChinaXi’an Key Laboratory of Intelligent Energy, Xi’an University of Technology, Xi’an 710065, ChinaXi’an Key Laboratory of Intelligent Energy, Xi’an University of Technology, Xi’an 710065, ChinaXi’an Key Laboratory of Intelligent Energy, Xi’an University of Technology, Xi’an 710065, ChinaXi’an Key Laboratory of Intelligent Energy, Xi’an University of Technology, Xi’an 710065, ChinaThe distribution network can continue to operate for a short time once a single-phase grounding fault arises, but if the defect is not monitored and corrected right away, it might cause serious harm. However, the bulk of fault monitoring algorithms struggle to identify faults when applied to complex distribution networks with a tree structure. In this article, a fault online monitoring method based on power line communication equipment is proposed. The method identifies the fault by monitoring the change of channel frequency response (CFR) of the distribution network in real-time, locates the fault branch by comparing the change amplitude of CFR of different receiving devices, calculates the impedance amplitude of the fault branch, and combines the relation between impedance and distance to further realize the accurate location of the fault point. A large number of simulations show that the method is accurate and stable, and can effectively monitor both high and low-resistance ground faults. Under the simulation conditions without considering signal interference, the fault branch detection accuracy reaches 100%, and the average error of fault distance localization is 19.38 m (1.98%). Compared with other methods, this method is highly applicable, with good real-time performance and high positioning accuracy.http://www.sciencedirect.com/science/article/pii/S2352484723007199Ground faultChannel frequency responseFault recognitionFault location |
| spellingShingle | Dong Liang Zilun Wang Hu Liu Kaiwen Zhang Yang Wang A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices Energy Reports Ground fault Channel frequency response Fault recognition Fault location |
| title | A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| title_full | A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| title_fullStr | A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| title_full_unstemmed | A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| title_short | A novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| title_sort | novel online monitoring method of ground fault in tree form distribution networks based on power line carrier devices |
| topic | Ground fault Channel frequency response Fault recognition Fault location |
| url | http://www.sciencedirect.com/science/article/pii/S2352484723007199 |
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