Electric Power ›› 2014, Vol. 47 ›› Issue (6): 1-5.DOI: 10.11930/j.issn.1004-9649.2014.6.1.4

• Power System •     Next Articles

Analysis on the Electromagnetic Coupling Components of UHV AC Double-Circuit on the Same Tower Transmission Lines

WU Jing-wen, ZHANG Long-wei, CAO Bao-jiang, ZHU Jun, WU Guang-ning, SHI Chao-qun   

  1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Revised:2014-03-18 Online:2014-06-18 Published:2015-12-08
  • About author:This work is supported by Science and Technology Project of State Grid Corporation of China (2011-WG-4)
  • Supported by:
    国家电网公司科技资助项目(2011-WG-4)

Abstract: An electromagnetic coupling model of UHV AC double-circuit on the same tower transmission lines is established according to the structure parameters, and used to calculate the electromagnetic component on the overhaul circuit induced by the operating circuit. The influence is analyzed of the transposition forms, fault type, fault location and coupling ground wires on the electromagnetic coupling component. The analysis indicate that the transmission line transposition and the coupling ground wire erection can effectively reduce the electromagnetic coupling component; the electromagnetic coupling components changes little while different line fault occurs; the electromagnetic coupling components reaches the maximum in value when single-phase ground fault occurs in the line’s two ends.

Key words: UHV, double circuit on the same tower, electromagnetic coupling, PSCAD/EMTDC

CLC Number: