Electric Power ›› 2017, Vol. 50 ›› Issue (11): 127-133.DOI: 10.11930/j.issn.1004-9649.201606156

• Power System • Previous Articles     Next Articles

Estimation and Countermeasures of Floating Conductor Induced Voltage

LIU Lina1, TAO Jiaxiang1, WAN Jian2, XIE Huichun3, YU Jianqin1   

  1. 1. School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China;
    2. Wuhan TV Station, Wuhan 430000, China;
    3. Wuhan Branch of China Electric Power Research Institute, Wuhan 430074, China
  • Received:2016-06-15 Online:2017-11-25 Published:2017-11-29
  • Supported by:
    This work is supported by Science and Technology Projects of SGCC (No. GY71-12-030).

Abstract: A floating conductor below the direct current (DC) transmission lines will produce certain induction voltage and the human body would be affected by transient shock when contacting the conductor. In order to estimate the induction voltage, the total electric field under DC lines is obtained by the Deutsch-based numerical calculation method, and the potential of floating fine conductors in the nominal electric field under DC lines is gotten by the charge simulation method. For the purpose of engineering simplification, a method is proposed for estimating conductor induction potential in the total field by multiplying the potential of floating fine conductors with the potential proportion coefficient. Finally measures are proposed to reduce the induced voltage of floating conductors.

Key words: high voltage direct current transmission line, total electric field, floating fine conductor, induced voltage, estimation

CLC Number: