By Topic

Numerical analysis of potential distribution between ground electrodes of HVDC system considering the effect of deep earth layers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Zhang, B. ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Zeng, R. ; He, J. ; Zhao, J.
more authors

The ground potential differences due to the ground return current of a long-distance high-voltage direct-current (HVDC) system may make the grounded transformers in AC substations under DC bias. Complex image method is used to calculate the potential distribution in multilayer earth between ground electrodes of an HVDC system. The effects of the deep earth layers, including the crust, the mantle and the core, on the potential distribution along the earth's surface are analysed. Analysis results show that although the effects of the deep earth layers on the potential distribution near the ground electrode can be neglected, it should be taken into account for the ground potential rise over tens of kilometres away from the ground electrode, which is important for analysing the transformer's DC bias due to the ground return current. The method and the results are useful for analysing the influence of the ground return current from HVDC ground electrode on systems that use grounding technique.

Published in:

Generation, Transmission & Distribution, IET  (Volume:2 ,  Issue: 2 )