An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable
Abstract Discharge failure mechanism of the cable buffer layer is investigated in this paper by the analysis of causes and characteristics of partial discharge (PD) behaviours in the case of failure. The obtained results show that both the volume resistivity and the surface resistance of the buffer...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-08-01
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| Series: | IET Science, Measurement & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/smt2.12051 |
| _version_ | 1828237721839075328 |
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| author | Boxue Du Xiaoyu Du Xiaoxiao Kong Jin Li Zhijian Li Xu Li |
| author_facet | Boxue Du Xiaoyu Du Xiaoxiao Kong Jin Li Zhijian Li Xu Li |
| author_sort | Boxue Du |
| collection | DOAJ |
| description | Abstract Discharge failure mechanism of the cable buffer layer is investigated in this paper by the analysis of causes and characteristics of partial discharge (PD) behaviours in the case of failure. The obtained results show that both the volume resistivity and the surface resistance of the buffer layer increase as the relative humidity is elevated. It is found that the electric field distribution inside the buffer layer is distorted when there is poor contact condition and aggravated with the increase of the volume resistivity by the finite element analysis. PD behaviours analysis shows that the PD intensity is closely related to the contact state of the buffer layer, and hence the latter can be reflected by statistical parameters like the maximum pulse amplitude and the average equivalent frequency. The conclusions indicate that the electric field distortion is caused by the variation of the contact state of the buffer layer and the deterioration, which is responsible for the occurrence of PD. Therefore, the PD detection for the suspected faulty cables provides an effective method for the state evaluation of the buffer layer. |
| first_indexed | 2024-04-12T20:52:46Z |
| format | Article |
| id | doaj.art-a430f193481f415ea96fbb8f1b4db75c |
| institution | Directory Open Access Journal |
| issn | 1751-8822 1751-8830 |
| language | English |
| last_indexed | 2024-04-12T20:52:46Z |
| publishDate | 2021-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Science, Measurement & Technology |
| spelling | doaj.art-a430f193481f415ea96fbb8f1b4db75c2022-12-22T03:17:05ZengWileyIET Science, Measurement & Technology1751-88221751-88302021-08-0115650851610.1049/smt2.12051An investigation on discharge fault in buffer layer of 220 kV XLPE AC cableBoxue Du0Xiaoyu Du1Xiaoxiao Kong2Jin Li3Zhijian Li4Xu Li5School of Electrical and Information Engineering Tianjin University Tianjin ChinaSchool of Electrical and Information Engineering Tianjin University Tianjin ChinaSchool of Electrical and Information Engineering Tianjin University Tianjin ChinaSchool of Electrical and Information Engineering Tianjin University Tianjin ChinaEquipment Condition Assessment Center State Grid Tianjin Electric Power Research Institute Tianjin ChinaEquipment Condition Assessment Center State Grid Tianjin Electric Power Research Institute Tianjin ChinaAbstract Discharge failure mechanism of the cable buffer layer is investigated in this paper by the analysis of causes and characteristics of partial discharge (PD) behaviours in the case of failure. The obtained results show that both the volume resistivity and the surface resistance of the buffer layer increase as the relative humidity is elevated. It is found that the electric field distribution inside the buffer layer is distorted when there is poor contact condition and aggravated with the increase of the volume resistivity by the finite element analysis. PD behaviours analysis shows that the PD intensity is closely related to the contact state of the buffer layer, and hence the latter can be reflected by statistical parameters like the maximum pulse amplitude and the average equivalent frequency. The conclusions indicate that the electric field distortion is caused by the variation of the contact state of the buffer layer and the deterioration, which is responsible for the occurrence of PD. Therefore, the PD detection for the suspected faulty cables provides an effective method for the state evaluation of the buffer layer.https://doi.org/10.1049/smt2.12051Dielectric breakdown and dischargesOrganic insulationFinite element analysisPower cablesPower line supports, insulators and connectors |
| spellingShingle | Boxue Du Xiaoyu Du Xiaoxiao Kong Jin Li Zhijian Li Xu Li An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable IET Science, Measurement & Technology Dielectric breakdown and discharges Organic insulation Finite element analysis Power cables Power line supports, insulators and connectors |
| title | An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable |
| title_full | An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable |
| title_fullStr | An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable |
| title_full_unstemmed | An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable |
| title_short | An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable |
| title_sort | investigation on discharge fault in buffer layer of 220 kv xlpe ac cable |
| topic | Dielectric breakdown and discharges Organic insulation Finite element analysis Power cables Power line supports, insulators and connectors |
| url | https://doi.org/10.1049/smt2.12051 |
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