Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments
The study of incipient faults due to insulation defects in cables is crucial for preventing electrical fires and ensuring personal safety. However, research on incipient faults in low-voltage cables remains relatively underexplored compared to that on medium-voltage cables. This paper focuses on low...
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MDPI AG
2025-04-01
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| author | Chen Zeng Yunhe Wang Miaomiao Wu Yanru Lei Jing Yong Xiaojing Wang |
| author_facet | Chen Zeng Yunhe Wang Miaomiao Wu Yanru Lei Jing Yong Xiaojing Wang |
| author_sort | Chen Zeng |
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| description | The study of incipient faults due to insulation defects in cables is crucial for preventing electrical fires and ensuring personal safety. However, research on incipient faults in low-voltage cables remains relatively underexplored compared to that on medium-voltage cables. This paper focuses on low-voltage cross-linked polyethylene (XLPE) cables and investigates the changes in voltage and current caused by insulation defects in different wet conditions. The main findings are that the voltage applied to the cable with defective insulation shows sub-cycle disturbances that become more frequent. The current in the cable conductor shows a pulsed shape, coincident with the voltage disturbances. Over time, the sub-cycle disturbances gradually disappear, instead, the steady-state leakage current emerges. The wet conditions affect waveforms of the voltage/current disturbance and the frequency of occurrence. The findings provide detailed and unique characteristics of the voltage and current during the cable incipient fault, which are different from those of the incipient fault in the medium-voltage cables. The simulation and analysis support the experimental results. Based on the experimental results, a model is developed for further research on LV-cable incipient fault detection and protection. |
| format | Article |
| id | doaj-art-eab63ccf982f46bfa6cd869d6e0cc96e |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-eab63ccf982f46bfa6cd869d6e0cc96e2025-08-20T02:28:40ZengMDPI AGApplied Sciences2076-34172025-04-01158452410.3390/app15084524Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet EnvironmentsChen Zeng0Yunhe Wang1Miaomiao Wu2Yanru Lei3Jing Yong4Xiaojing Wang5State Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044, ChinaThe study of incipient faults due to insulation defects in cables is crucial for preventing electrical fires and ensuring personal safety. However, research on incipient faults in low-voltage cables remains relatively underexplored compared to that on medium-voltage cables. This paper focuses on low-voltage cross-linked polyethylene (XLPE) cables and investigates the changes in voltage and current caused by insulation defects in different wet conditions. The main findings are that the voltage applied to the cable with defective insulation shows sub-cycle disturbances that become more frequent. The current in the cable conductor shows a pulsed shape, coincident with the voltage disturbances. Over time, the sub-cycle disturbances gradually disappear, instead, the steady-state leakage current emerges. The wet conditions affect waveforms of the voltage/current disturbance and the frequency of occurrence. The findings provide detailed and unique characteristics of the voltage and current during the cable incipient fault, which are different from those of the incipient fault in the medium-voltage cables. The simulation and analysis support the experimental results. Based on the experimental results, a model is developed for further research on LV-cable incipient fault detection and protection.https://www.mdpi.com/2076-3417/15/8/4524low-voltage cableswet environmentincipient faultcharacteristics of voltage and currentincipient fault model |
| spellingShingle | Chen Zeng Yunhe Wang Miaomiao Wu Yanru Lei Jing Yong Xiaojing Wang Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments Applied Sciences low-voltage cables wet environment incipient fault characteristics of voltage and current incipient fault model |
| title | Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments |
| title_full | Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments |
| title_fullStr | Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments |
| title_full_unstemmed | Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments |
| title_short | Experimental Investigation and Modelling of the Incipient Fault of Low-Voltage XLPE Cables in Wet Environments |
| title_sort | experimental investigation and modelling of the incipient fault of low voltage xlpe cables in wet environments |
| topic | low-voltage cables wet environment incipient fault characteristics of voltage and current incipient fault model |
| url | https://www.mdpi.com/2076-3417/15/8/4524 |
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