Preprint of the paper: "Computer Analysis of Earthing Systems in Horizontally or Vertically Layered Soils" I. Colominas, J. Gómez-Calviño, F. Navarrina, M. Casteleiro (2001) Electric Power Systems Research, 59, 149-156. http://caminos.udc.es/gmni
0 o o o o 0 e o o K 0 0 Ld Ld o
K K ; 0 K γ 1 γ 2 γ 1 γ 2 K o K K K q > q)( q K q K q q q d 1 d 1 q q + + q > > > >
K KK K ; KK K ; ; 7 [ & 7 7 7)d 7)d )d [ & 7,7,7 q ~ )d q)( q,7 q,7 K q 7 K ; ~ ~ > i [ & & q p & 7 7)d #)d )d q)( #q i7 # i #)d #q i7 i KK q 7 # K ; # ; # i ; # i # p p > 7
7 1 1 1 d d d d d 1 d d
d d d 1 d d d d d 1 d
Y(m) 200.00 150.00 100.00 50.00 0.00 0.00 50.00 100.00 150.00 200.00 250.00 X (m) Y(m) 200.00 150.00 100.00 50.00 0.00 0.00 50.00 100.00 150.00 200.00 250.00 X (m)
Y(m) 200.00 150.00 100.00 50.00 0.00 0.00 50.00 100.00 150.00 200.00 250.00 X (m) Y(m) 200.00 150.00 100.00 50.00 0.00 0.00 50.00 100.00 150.00 200.00 250.00 X (m)
8.0 8.5 9.0 9.5 10.0 10.5 G.P.R.=10kV D C A B 8.0 8.5 9.0 9.5 10.0 10.5 0. 50. 100. 150. 200. 250. x (y=97.0) (m) G.P.R.=10kV C 0. 50. 100. 150. 200. A D B y (x=115.0) (m)