Geometrical considerations in the frequency behaviour of grounding systems

Usually, substation grounding grid design is carried out with the aim of meeting the safety restrictions while minimizing its cost. Typically, at low frequency, a best solution based on unequally spaced grids can be obtained. In this paper, the behaviour at several frequencies of this kind of grid was analysed and compared with regular (equally spaced) grids.

[1]  L. Huang,et al.  Study of unequally spaced grounding groups , 1995 .

[2]  Jung-Hoon Kim,et al.  Efficient ground grid designs in layered soils , 1998 .

[3]  J. Cidras,et al.  Frequency analysis of grounding systems , 1998, 8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227).

[4]  J. Cidras,et al.  Genetic algorithm based method for grounding grid design , 1998, 1998 IEEE International Conference on Evolutionary Computation Proceedings. IEEE World Congress on Computational Intelligence (Cat. No.98TH8360).

[5]  B. Thapar,et al.  Simplified equations for mesh and step voltages in an AC substation , 1991 .

[6]  A. F. Otero,et al.  Frequency-dependent grounding system calculation by means of a conventional nodal analysis technique , 1999 .

[7]  V. Gerez,et al.  Evaluation of ground resistance of a grounding grid of any , 1991, IEEE Power Engineering Review.