Grounding Performance Analysis of the Substation Grounding Grids by Finite Element Method in Frequency Domain

Author

Qi, Lei ; Cui, Xiang ; Zhao, Zhibin ; Li, Huiqi

Author_Institution

Sch. of Electr. Eng., North China Electr. Power Univ., Baoding

fYear

0

fDate

0-0 0

Firstpage

262

Lastpage

262

Abstract

Based on finite element method (FEM) of ID conductor element coupled with 3D soil element, we take into account the frequency dependent characteristic of the discretized elements to analyze the grounding performance of the substation grounding grids. Compared with A-V formulation of 3D FEM, the proposed method can greatly save the CPU time and the frequency can be considered during FEM modeling. In comparison with the method of moment (MoM) and the measured results, the presented method is proved to be correct and effective. Furthermore, we can calculate the H-field generated by the substation grounding grids with both currents in the underground conductors and leakage currents flowing in the soil

Keywords

conductors (electric); earthing; finite element analysis; frequency-domain analysis; leakage currents; method of moments; power grids; substation protection; 3D FEM; 3D soil element; H-field generation; MoM; conductor element coupling; finite element method; frequency dependent characteristic; frequency domain; grounding performance analysis; leakage currents; method of moment; substation grounding grids; underground conductors; Conductors; Finite element methods; Frequency dependence; Frequency domain analysis; Grounding; Mesh generation; Moment methods; Performance analysis; Soil measurements; Substations;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on

Conference_Location

Miami, FL

Print_ISBN

1-4244-0320-0

Type

conf

DOI

10.1109/CEFC-06.2006.1633052

Filename

1633052