AUTHOR=Hu Yuanchao , Liu Zhixiang , Huang Tao , An Yunzhu , Shen Wentao , Hu Shangmao , Ma Chenghui , An Bingchen , Chen Dan 

TITLE=A New Grounding Resistance Reduction Method for Wind Turbines by Grounding Grid Connection in Limited Areas

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.830628

DOI=10.3389/fenrg.2022.830628

ISSN=2296-598X

ABSTRACT=Restricted by cultivated land vegetation, road construction, and land acquisition compensation costs, grounding electrode extension method is not applicable for grounding resistance reduction of some wind turbines in limited area. A new grounding resistance reduction method is proposed and verified for wind turbines by connecting nearby wind turbine grounding grids. To study the efficiency of proposed method, grounding characteristics of connection grounding grid is calculated. Simulation results indicate that the grounding resistance of connection grounding grid is smaller than that of box extension grounding grid. The grounding characteristics of grounding grid connection are affected by grounding current frequency and material parameters. The grounding grid connection increases the current dispersion area and reduces the ground potential rise of grounding conductor.