Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System
The single-core alternating current (AC) submarine cable can be provided with an outer sheath that is firmly grounded on both ends of the cable. The circulating currents of the outer sheath are generated to be almost as large as the conductor current. The outer sheaths, which have different structur...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-05-01
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| Series: | Symmetry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-8994/14/6/1088 |
| _version_ | 1797482080293093376 |
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| author | Peng Li Pengcheng Guo |
| author_facet | Peng Li Pengcheng Guo |
| author_sort | Peng Li |
| collection | DOAJ |
| description | The single-core alternating current (AC) submarine cable can be provided with an outer sheath that is firmly grounded on both ends of the cable. The circulating currents of the outer sheath are generated to be almost as large as the conductor current. The outer sheaths, which have different structures and properties, generate unwanted losses, asymmetric distribution of circulating current, and extra heat in the single-core AC submarine cables. The formation mechanism of the circulating currents in the submarine cable sheath and armoring is analyzed from the perspective of electromagnetic shielding using electromagnetic transient theoretical analysis, simulation calculation, and field experiments. Equations for calculating the circulating currents of the sheath and armoring are proposed, and influences of these relationships that include the different material characteristics of the sheath and armoring are analyzed. The influence factors, which include different levels of magnetic armoring permeability, resistivity, and ground resistance of the outer sheath, can affect the symmetrical distribution of the circulating current in the outer sheaths. We propose using the phase differences to determine the material properties of each metallic section in the submarine cable. |
| first_indexed | 2024-03-09T22:23:11Z |
| format | Article |
| id | doaj.art-7bac21919ef44e3b8925c65ddb2e43c9 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T22:23:11Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-7bac21919ef44e3b8925c65ddb2e43c92023-11-23T19:10:40ZengMDPI AGSymmetry2073-89942022-05-01146108810.3390/sym14061088Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable SystemPeng Li0Pengcheng Guo1School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, ChinaThe single-core alternating current (AC) submarine cable can be provided with an outer sheath that is firmly grounded on both ends of the cable. The circulating currents of the outer sheath are generated to be almost as large as the conductor current. The outer sheaths, which have different structures and properties, generate unwanted losses, asymmetric distribution of circulating current, and extra heat in the single-core AC submarine cables. The formation mechanism of the circulating currents in the submarine cable sheath and armoring is analyzed from the perspective of electromagnetic shielding using electromagnetic transient theoretical analysis, simulation calculation, and field experiments. Equations for calculating the circulating currents of the sheath and armoring are proposed, and influences of these relationships that include the different material characteristics of the sheath and armoring are analyzed. The influence factors, which include different levels of magnetic armoring permeability, resistivity, and ground resistance of the outer sheath, can affect the symmetrical distribution of the circulating current in the outer sheaths. We propose using the phase differences to determine the material properties of each metallic section in the submarine cable.https://www.mdpi.com/2073-8994/14/6/1088submarine cablecirculating currentmagnetic field analysiselectromagnetic shielding |
| spellingShingle | Peng Li Pengcheng Guo Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System Symmetry submarine cable circulating current magnetic field analysis electromagnetic shielding |
| title | Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System |
| title_full | Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System |
| title_fullStr | Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System |
| title_full_unstemmed | Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System |
| title_short | Characteristic Analysis of the Outer Sheath Circulating Current in a Single-Core AC Submarine Cable System |
| title_sort | characteristic analysis of the outer sheath circulating current in a single core ac submarine cable system |
| topic | submarine cable circulating current magnetic field analysis electromagnetic shielding |
| url | https://www.mdpi.com/2073-8994/14/6/1088 |
| work_keys_str_mv | AT pengli characteristicanalysisoftheoutersheathcirculatingcurrentinasinglecoreacsubmarinecablesystem AT pengchengguo characteristicanalysisoftheoutersheathcirculatingcurrentinasinglecoreacsubmarinecablesystem |