波纹金属护套高压单芯电缆线芯护层互感的解析解

Translated title of the contribution: Analytical solution of the mutual inductance of a HV single conductor cable with corrugated metallic sheath

Hang Wang*, Wenjun Zhou*, Jie Chen, Jingxing Cao, Chengke Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this paper, the analytical solution of the mutual inductance between the centre conductor and the sheath of HV single conductor cable with corrugated metallic sheath is deduced based on the Maxwell equations. The parametric equation of the helical and annular corrugated sheath cable is proposed as the limits of surface integral of the magnetic flux within the sheath. The mutual inductances of 110kV cables with 400mm2, 800mm2, 1 200mm2 cross-section are analyzed. The results show that the mutual inductance increases with the increase of the sheath thickness and embossing depth, and decreases with the increase of the geometric mean distance between conductor and sheath. The analytical solution is consistent with the numerical solution. Besides, the approximate solution of mutual inductance calculated by the geometric mean distance is 0.2~0.3% smaller than that of the analytical solution. For a long cable with multiple pitches, the mutual inductance of HV cable with helical and annular corrugated sheath is identical, whilst smaller than that with smooth sheath. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
Translated title of the contributionAnalytical solution of the mutual inductance of a HV single conductor cable with corrugated metallic sheath
Original languageChinese (Simplified)
Pages (from-to)3369-3376
Number of pages8
JournalDiangong Jishu Xuebao/Transactions of China Electrotechnical Society
Volume35
Issue number16
DOIs
Publication statusPublished - 25 Aug 2020

Keywords

  • Corrugated metallic sheath
  • High voltage cable
  • Induced electro-motive force
  • Mutual inductance
  • Sheath current

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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