Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable
Currently， submarine cables in operation （hereinafter referred to as “submarine cables”） commonly use insulated or semi-conductive polyethylene sheaths to isolate the three-phase metal sheaths， preventing complete cancellation of the induced voltage between the phases. As a result， significant sheat...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
zhejiang electric power
2025-05-01
|
| Series: | Zhejiang dianli |
| Subjects: | |
| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=c8d8d86c-3004-47cd-b0eb-1948d661e17b |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849735778608873472 |
|---|---|
| author | DENG Honglei HAN Feiyang WANG Pengyu LIAN Jiehui LIU Gang |
| author_facet | DENG Honglei HAN Feiyang WANG Pengyu LIAN Jiehui LIU Gang |
| author_sort | DENG Honglei |
| collection | DOAJ |
| description | Currently， submarine cables in operation （hereinafter referred to as “submarine cables”） commonly use insulated or semi-conductive polyethylene sheaths to isolate the three-phase metal sheaths， preventing complete cancellation of the induced voltage between the phases. As a result， significant sheath circulating currents can develop in the sheath when it is directly grounded at both ends. The thermal effects of these large circulating currents lead to frequent thermal ablation faults at the grounding connection of the metal sheath. Therefore， it is crucial to study the mechanism behind such fault. Using a real-life example of a thermal ablation fault at the metal sheath grounding connection of a submarine cable， the typical characteristics of the fault were analyzed through a disassembly inspection of the fault sample. Electromagnetic transient simulation software and finite element simulation software were used to analyze the temperature field distribution at the contact surface under different contact states between the submarine cable’s metal sheath and the grounding conductor. The simulation results largely replicated the actual fault characteristics， validating the fault mechanism of thermal ablation at the grounding connection of the submarine cable’s metal sheath. This research lays the foundation for the development of anomaly warning technologies for submarine cable grounding systems. |
| format | Article |
| id | doaj-art-e2c9c4a2b5f54c0dae1e9b1ec12f0cb6 |
| institution | DOAJ |
| issn | 1007-1881 |
| language | zho |
| publishDate | 2025-05-01 |
| publisher | zhejiang electric power |
| record_format | Article |
| series | Zhejiang dianli |
| spelling | doaj-art-e2c9c4a2b5f54c0dae1e9b1ec12f0cb62025-08-20T03:07:27Zzhozhejiang electric powerZhejiang dianli1007-18812025-05-0144511211910.19585/j.zjdl.2025050111007-1881（2025）05-0112-08Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cableDENG Honglei0HAN Feiyang1WANG Pengyu2LIAN Jiehui3LIU Gang4School of Electric Power Engineering， South China University of Technology， Guangzhou 510641， ChinaSchool of Electric Power Engineering， South China University of Technology， Guangzhou 510641， ChinaSchool of Automation， Guangdong Polytechnic Normal University， Guangzhou， 510665， ChinaSchool of Electric Power Engineering， South China University of Technology， Guangzhou 510641， ChinaSchool of Electric Power Engineering， South China University of Technology， Guangzhou 510641， ChinaCurrently， submarine cables in operation （hereinafter referred to as “submarine cables”） commonly use insulated or semi-conductive polyethylene sheaths to isolate the three-phase metal sheaths， preventing complete cancellation of the induced voltage between the phases. As a result， significant sheath circulating currents can develop in the sheath when it is directly grounded at both ends. The thermal effects of these large circulating currents lead to frequent thermal ablation faults at the grounding connection of the metal sheath. Therefore， it is crucial to study the mechanism behind such fault. Using a real-life example of a thermal ablation fault at the metal sheath grounding connection of a submarine cable， the typical characteristics of the fault were analyzed through a disassembly inspection of the fault sample. Electromagnetic transient simulation software and finite element simulation software were used to analyze the temperature field distribution at the contact surface under different contact states between the submarine cable’s metal sheath and the grounding conductor. The simulation results largely replicated the actual fault characteristics， validating the fault mechanism of thermal ablation at the grounding connection of the submarine cable’s metal sheath. This research lays the foundation for the development of anomaly warning technologies for submarine cable grounding systems.https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=c8d8d86c-3004-47cd-b0eb-1948d661e17bsubmarine cablesmetal sheathgrounding systemcontact resistancethermal ablation |
| spellingShingle | DENG Honglei HAN Feiyang WANG Pengyu LIAN Jiehui LIU Gang Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable Zhejiang dianli submarine cables metal sheath grounding system contact resistance thermal ablation |
| title | Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable |
| title_full | Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable |
| title_fullStr | Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable |
| title_full_unstemmed | Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable |
| title_short | Analysis of thermal ablation faults in the grounding system of a 35 kV three-core submarine cable |
| title_sort | analysis of thermal ablation faults in the grounding system of a 35 kv three core submarine cable |
| topic | submarine cables metal sheath grounding system contact resistance thermal ablation |
| url | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=c8d8d86c-3004-47cd-b0eb-1948d661e17b |
| work_keys_str_mv | AT denghonglei analysisofthermalablationfaultsinthegroundingsystemofa35kvthreecoresubmarinecable AT hanfeiyang analysisofthermalablationfaultsinthegroundingsystemofa35kvthreecoresubmarinecable AT wangpengyu analysisofthermalablationfaultsinthegroundingsystemofa35kvthreecoresubmarinecable AT lianjiehui analysisofthermalablationfaultsinthegroundingsystemofa35kvthreecoresubmarinecable AT liugang analysisofthermalablationfaultsinthegroundingsystemofa35kvthreecoresubmarinecable |