Title :
Calculation of Performance of UHVDC Grounding Electrode under the Consideration of the Self-Resistivity of Electrode
Author :
Wang, Jianwu ; Wen, Xishan ; Du, Zhongdong
Author_Institution :
Wuhan Univ., Wuhan
Abstract :
The performance parameters of UHVDC cirque grounding electrode are computed by 3D finite element method when self-resistance of grounding electrode is involved in. This paper compare grounding performance of single-cirque, double-cirques and three-cirques grounding electrode on condition of same electrode length. At the same time, because double-layer soil can instead of a majority of uneven soil, so a series of influencing factor of grounding performance such as electrode´s depth of burial, top-layer soil resistivity and bottom-layer soil resistivity are analyzed when considered uneven soil model.
Keywords :
earth electrodes; electrical resistivity; UHVDC grounding electrode; bottom-layer soil resistivity; double-cirques performance; electrode self-resistivity; single-cirque performance; three-cirques grounding electrode; top-layer soil resistivity; Accuracy; Boundary conditions; Conductivity; Current density; Electrodes; Finite element methods; Grounding; Soil; Steel; Voltage;
Conference_Titel :
Natural Computation, 2007. ICNC 2007. Third International Conference on
Conference_Location :
Haikou
Print_ISBN :
978-0-7695-2875-5
DOI :
10.1109/ICNC.2007.291