Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods

Mingzhen Li, Chengke Zhou, Wenjun Zhou, Jun Zhang, Liang Zhang, Leiming Yao

Research output: Contribution to journalArticle

9 Downloads (Pure)

Abstract

Among all failures in cable circuits, the failure rate of cable joints is much higher than that in cable bodies. In an effort to reduce cable failure rates and improve the reliability of power cable systems, this paper studies the possibility of increasing the length of a cable section and thus reducing the number of cable joints via alternative sheath bonding methods. As the maximum length of an electrical cable section is governed by the permissible sheath standing voltage, this paper first proposes a precise sheath voltage calculation model without approximations and simplifications. The sheath voltage per unit length has then been calculated for each bonding method using the proposed model. The maximum length of a cable section has then been calculated, based on the permissible sheath standing voltage, for the various sheath bonding methods. Results show that the traditional 500-metre minor section length could be increased to 2.21 km by using the single-point bonding method. The maximum distance can be further lengthened by increasing the physical spacing among the three phase cables. The economic comparison for each bonding method has also been made. Finally, the proposed method has been applied to a HV cable circuit already in operation, and the operational data confirms the feasibility.
Original languageEnglish
Number of pages9
JournalHigh Voltage
DOIs
Publication statusPublished - 17 Jun 2019

Fingerprint

Cables
Electric potential
Networks (circuits)
Economics

Keywords

  • cable circuits
  • high voltage cables
  • bonding methods
  • cable joints

Cite this

@article{ad51f6016fad42c198f9fe8298e81300,
title = "Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods",
abstract = "Among all failures in cable circuits, the failure rate of cable joints is much higher than that in cable bodies. In an effort to reduce cable failure rates and improve the reliability of power cable systems, this paper studies the possibility of increasing the length of a cable section and thus reducing the number of cable joints via alternative sheath bonding methods. As the maximum length of an electrical cable section is governed by the permissible sheath standing voltage, this paper first proposes a precise sheath voltage calculation model without approximations and simplifications. The sheath voltage per unit length has then been calculated for each bonding method using the proposed model. The maximum length of a cable section has then been calculated, based on the permissible sheath standing voltage, for the various sheath bonding methods. Results show that the traditional 500-metre minor section length could be increased to 2.21 km by using the single-point bonding method. The maximum distance can be further lengthened by increasing the physical spacing among the three phase cables. The economic comparison for each bonding method has also been made. Finally, the proposed method has been applied to a HV cable circuit already in operation, and the operational data confirms the feasibility.",
keywords = "cable circuits, high voltage cables, bonding methods, cable joints",
author = "Mingzhen Li and Chengke Zhou and Wenjun Zhou and Jun Zhang and Liang Zhang and Leiming Yao",
note = "Acceptance in SAN AAM: no embargo AAM available on publisher's website at 19/06/19. VOR not permitted according to Sherpa. AAM uploaded. TM 19/06/2019 ^VOR now available from publisher's website. Uploaded this version and removed previous version. ET 23/08/19",
year = "2019",
month = "6",
day = "17",
doi = "10.1049/hve.2019.0011",
language = "English",

}

Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods. / Li, Mingzhen; Zhou, Chengke; Zhou, Wenjun; Zhang, Jun; Zhang, Liang; Yao, Leiming.

In: High Voltage, 17.06.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods

AU - Li, Mingzhen

AU - Zhou, Chengke

AU - Zhou, Wenjun

AU - Zhang, Jun

AU - Zhang, Liang

AU - Yao, Leiming

N1 - Acceptance in SAN AAM: no embargo AAM available on publisher's website at 19/06/19. VOR not permitted according to Sherpa. AAM uploaded. TM 19/06/2019 ^VOR now available from publisher's website. Uploaded this version and removed previous version. ET 23/08/19

PY - 2019/6/17

Y1 - 2019/6/17

N2 - Among all failures in cable circuits, the failure rate of cable joints is much higher than that in cable bodies. In an effort to reduce cable failure rates and improve the reliability of power cable systems, this paper studies the possibility of increasing the length of a cable section and thus reducing the number of cable joints via alternative sheath bonding methods. As the maximum length of an electrical cable section is governed by the permissible sheath standing voltage, this paper first proposes a precise sheath voltage calculation model without approximations and simplifications. The sheath voltage per unit length has then been calculated for each bonding method using the proposed model. The maximum length of a cable section has then been calculated, based on the permissible sheath standing voltage, for the various sheath bonding methods. Results show that the traditional 500-metre minor section length could be increased to 2.21 km by using the single-point bonding method. The maximum distance can be further lengthened by increasing the physical spacing among the three phase cables. The economic comparison for each bonding method has also been made. Finally, the proposed method has been applied to a HV cable circuit already in operation, and the operational data confirms the feasibility.

AB - Among all failures in cable circuits, the failure rate of cable joints is much higher than that in cable bodies. In an effort to reduce cable failure rates and improve the reliability of power cable systems, this paper studies the possibility of increasing the length of a cable section and thus reducing the number of cable joints via alternative sheath bonding methods. As the maximum length of an electrical cable section is governed by the permissible sheath standing voltage, this paper first proposes a precise sheath voltage calculation model without approximations and simplifications. The sheath voltage per unit length has then been calculated for each bonding method using the proposed model. The maximum length of a cable section has then been calculated, based on the permissible sheath standing voltage, for the various sheath bonding methods. Results show that the traditional 500-metre minor section length could be increased to 2.21 km by using the single-point bonding method. The maximum distance can be further lengthened by increasing the physical spacing among the three phase cables. The economic comparison for each bonding method has also been made. Finally, the proposed method has been applied to a HV cable circuit already in operation, and the operational data confirms the feasibility.

KW - cable circuits

KW - high voltage cables

KW - bonding methods

KW - cable joints

U2 - 10.1049/hve.2019.0011

DO - 10.1049/hve.2019.0011

M3 - Article

ER -