Research on Improving Electromagnetic Environment of Mixed-Voltage Double-Circuit DC Transmission Line on the Same Tower
In order to improve the increasingly serious electromagnetic impact of high-voltage direct current transmission lines,a new scheme for the layout of hybrid double circuit direct current transmission lines is proposed.The new scheme of line layout weakens the electromagnetic impact of DC transmission lines on the environment by changing the spatial geometric structure of pole conductors and reconstructing the spatial distribution of positive and negative ions after corona discharge of pole conductors.Studying its electromagnetic environment is of great significance.This article is based on the Kaptzov hypothesis and uses COMSOL multi physics field coupling to calculate the ion current concentration,synthetic electric field,corridor width,and changes in synthetic electric field under different wind speeds for DC transmission lines under the new scheme and conventional layout.The results indicate that selecting a suitable new layout scheme can effectively improve the electromagnetic environment impact and save transmission corridor resources.In addition,the unique low range asymmetric electromagnetic environment of DC lines under the new scheme layout has excellent wind resistance and stability.
NETL
NSTL
万方数据
维普
