Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing
Insulation resistance (IR) is an essential metric indicating insulation conditions of extruded power cables. To deliver reliable IR simulation as a reference for practical cable inspection, in this paper, four IR degradation models for cross-linked polyethylene-insulated cables under thermal ageing...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/5/1062 |
| _version_ | 1797264568402051072 |
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| author | Xufei Ge Fulin Fan Martin J. Given Brian G. Stewart |
| author_facet | Xufei Ge Fulin Fan Martin J. Given Brian G. Stewart |
| author_sort | Xufei Ge |
| collection | DOAJ |
| description | Insulation resistance (IR) is an essential metric indicating insulation conditions of extruded power cables. To deliver reliable IR simulation as a reference for practical cable inspection, in this paper, four IR degradation models for cross-linked polyethylene-insulated cables under thermal ageing are presented. In addition, the influences of methodologies and temperature profiles on IR simulation are evaluated. Cable cylindrical insulation is first divided into sufficiently small segments whose temperatures are simulated by jointly using a finite volume method and an artificial neural network to model the thermal ageing experiment conditions. The thermal degradation of IR is then simulated by dichotomy models that randomly sample fully degraded segments based on an overall insulation (layer) ageing condition estimation and discretization models that estimate the gradual degradation of individual segments, respectively. Furthermore, uniform and non-uniform temperature profiles are incorporated into dichotomy and discretization models, respectively, for a comparison. The IR simulation results are not only compared between different models, but also discussed around the sensitivity of IR simulation to segment sizes and degradation rates. This provides cable assessment engineers with insights into model behaviour as a reference for their selection of appropriate IR degradation models. |
| first_indexed | 2024-04-25T00:30:58Z |
| format | Article |
| id | doaj.art-3e9f55f46e054b90b15e4cd059b9f9da |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-25T00:30:58Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3e9f55f46e054b90b15e4cd059b9f9da2024-03-12T16:43:11ZengMDPI AGEnergies1996-10732024-02-01175106210.3390/en17051062Insulation Resistance Degradation Models of Extruded Power Cables under Thermal AgeingXufei Ge0Fulin Fan1Martin J. Given2Brian G. Stewart3Institute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UKInstitute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UKInstitute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UKInstitute for Energy and Environment, University of Strathclyde, Glasgow G1 1XW, UKInsulation resistance (IR) is an essential metric indicating insulation conditions of extruded power cables. To deliver reliable IR simulation as a reference for practical cable inspection, in this paper, four IR degradation models for cross-linked polyethylene-insulated cables under thermal ageing are presented. In addition, the influences of methodologies and temperature profiles on IR simulation are evaluated. Cable cylindrical insulation is first divided into sufficiently small segments whose temperatures are simulated by jointly using a finite volume method and an artificial neural network to model the thermal ageing experiment conditions. The thermal degradation of IR is then simulated by dichotomy models that randomly sample fully degraded segments based on an overall insulation (layer) ageing condition estimation and discretization models that estimate the gradual degradation of individual segments, respectively. Furthermore, uniform and non-uniform temperature profiles are incorporated into dichotomy and discretization models, respectively, for a comparison. The IR simulation results are not only compared between different models, but also discussed around the sensitivity of IR simulation to segment sizes and degradation rates. This provides cable assessment engineers with insights into model behaviour as a reference for their selection of appropriate IR degradation models.https://www.mdpi.com/1996-1073/17/5/1062extruded power cablesinsulation resistancethermal ageingdichotomy modelsdiscretization modelsinsulation temperature profiles |
| spellingShingle | Xufei Ge Fulin Fan Martin J. Given Brian G. Stewart Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing Energies extruded power cables insulation resistance thermal ageing dichotomy models discretization models insulation temperature profiles |
| title | Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing |
| title_full | Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing |
| title_fullStr | Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing |
| title_full_unstemmed | Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing |
| title_short | Insulation Resistance Degradation Models of Extruded Power Cables under Thermal Ageing |
| title_sort | insulation resistance degradation models of extruded power cables under thermal ageing |
| topic | extruded power cables insulation resistance thermal ageing dichotomy models discretization models insulation temperature profiles |
| url | https://www.mdpi.com/1996-1073/17/5/1062 |
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