Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable
An umbilical cable is a compactly integrated cable consisting of electrical power cables, communication (electric signal) cables, and chemical transposition tubes. An umbilical cable is widely used in developing oil and gas resources of deep and ultra-deep water. With the increment of the length and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/10/3501 |
| _version_ | 1797500238255095808 |
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| author | Runze Cai Shiyou Yang |
| author_facet | Runze Cai Shiyou Yang |
| author_sort | Runze Cai |
| collection | DOAJ |
| description | An umbilical cable is a compactly integrated cable consisting of electrical power cables, communication (electric signal) cables, and chemical transposition tubes. An umbilical cable is widely used in developing oil and gas resources of deep and ultra-deep water. With the increment of the length and the functional integration of umbilical cables, the crosstalk becomes a crucial issue in the cable design, and needs to be evaluated carefully before the fabrication and installation. Moreover, the twisted structure of communication cable cores has incurred extra difficulties to the crosstalk calculation. Nevertheless, it is not an easy task to model the complex twisted structure in existing models and methods of the crosstalk computation. In this regard, this paper proposes a numerical methodology for the crosstalk calculation considering the multi-conductor twisted structure of the cable cores. In the methodology, the four-wire twisted structure is modelled as a cascade of uniform multiconductor transmission line (MTL) sections, each wire section covering a length of 1/4 pitch, with abrupt interchanges of wire positions at the ends. The chain-parameter equation is introduced to describe the voltage and current transfer relationship in each MTL section. To obtain the numerical solutions of the twisted cable system, the port constraint equations and the permutation matrices are also required and developed. The per-unit-length parameters of the umbilical cable system are computed by numerical methods. The feasibility to engineering applications and accuracy of the proposed methodology is validated by experimental results, and the crosstalk characteristics of communication cables in a typical umbilical cable under different operating conditions are investigated. |
| first_indexed | 2024-03-10T03:59:03Z |
| format | Article |
| id | doaj.art-78e35c18a2b84262a21bdd64e98f4afa |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T03:59:03Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-78e35c18a2b84262a21bdd64e98f4afa2023-11-23T10:48:59ZengMDPI AGEnergies1996-10732022-05-011510350110.3390/en15103501Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical CableRunze Cai0Shiyou Yang1College of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaAn umbilical cable is a compactly integrated cable consisting of electrical power cables, communication (electric signal) cables, and chemical transposition tubes. An umbilical cable is widely used in developing oil and gas resources of deep and ultra-deep water. With the increment of the length and the functional integration of umbilical cables, the crosstalk becomes a crucial issue in the cable design, and needs to be evaluated carefully before the fabrication and installation. Moreover, the twisted structure of communication cable cores has incurred extra difficulties to the crosstalk calculation. Nevertheless, it is not an easy task to model the complex twisted structure in existing models and methods of the crosstalk computation. In this regard, this paper proposes a numerical methodology for the crosstalk calculation considering the multi-conductor twisted structure of the cable cores. In the methodology, the four-wire twisted structure is modelled as a cascade of uniform multiconductor transmission line (MTL) sections, each wire section covering a length of 1/4 pitch, with abrupt interchanges of wire positions at the ends. The chain-parameter equation is introduced to describe the voltage and current transfer relationship in each MTL section. To obtain the numerical solutions of the twisted cable system, the port constraint equations and the permutation matrices are also required and developed. The per-unit-length parameters of the umbilical cable system are computed by numerical methods. The feasibility to engineering applications and accuracy of the proposed methodology is validated by experimental results, and the crosstalk characteristics of communication cables in a typical umbilical cable under different operating conditions are investigated.https://www.mdpi.com/1996-1073/15/10/3501umbilical cablecrosstalktwisted structurechain-parameter matrixnumerical calculation |
| spellingShingle | Runze Cai Shiyou Yang Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable Energies umbilical cable crosstalk twisted structure chain-parameter matrix numerical calculation |
| title | Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable |
| title_full | Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable |
| title_fullStr | Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable |
| title_full_unstemmed | Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable |
| title_short | Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable |
| title_sort | analysis and calculation of crosstalk for twisted communication cables in umbilical cable |
| topic | umbilical cable crosstalk twisted structure chain-parameter matrix numerical calculation |
| url | https://www.mdpi.com/1996-1073/15/10/3501 |
| work_keys_str_mv | AT runzecai analysisandcalculationofcrosstalkfortwistedcommunicationcablesinumbilicalcable AT shiyouyang analysisandcalculationofcrosstalkfortwistedcommunicationcablesinumbilicalcable |