## 3 Electrode Station Configuration
### Eighth Electrode Station Configuration--Straight Frames Adapted to a T-Shaped Protective Dam
* The deviation in the maximum developing electric field strength of the electrode station compared to a single frame (26.13 V/m against 24.06 V/m, according to Table 10 in [2]) is of the order of 8.6%, which is significantly greater than that in the seventh configuration (24.84 V/m of Table 6) and smaller compared to the previous ones. * In Figure 30b, regions between the electrode frames are shown, where the electric field strength decreases significantly below 1.25 V/m. However, this does not occur in the area of the frame that is set out of operation, although it does not exceed the value of 2.59 V/m (which is slightly above 2.5 V/m). Practically, no issues arise (regarding the safety of the diver) when maintaining the frames. If it is desired that the frames be below the limit of 2.5 V/m, the respective radius of the central base should be 12 m, while for below 1.25 V/m, it should be 26 m (as it has been established after successive tests with base radii from 11.0 m and above, with a step of 0.5 m). * The developing maximum absolute potentials and the corresponding values of the electrode station resistance, with respect to remote earth, are much better (11.10 kV, 9.51 \(\Omega\)) compared to all other configurations. It behaves even better during symmetrical operation. * The developing absolute potentials at the centre O of the central base take smaller absolute values than the respective maximum absolute potentials, due to field interactions, where the largest values appear near the operating frames. * In field behaviour results, there are now similarities in the case of single-frame non-operation, due to the symmetry of the array layout. Any differences occurring in electric field strength are due to the use of Cartesian coordinates and the simulation step. In terms of determining the absolute potential, the path of integration plays a crucial role. Figure 30: (**a**) Electric field strength, (**b**) area of electric field strength; blue denotes values lower and yellow denotes values higher than the limit of 1.25 V/m, with linear current sources, regarding an electrode station with the 9 th configuration, in the area of Korakia (\(\rho_{S}=\infty\), without dam, \(\rho_{w}=0.25\)\(\Omega\cdot\)m, \(\ell_{p}=0.50\) m, \(d_{fp}=11.00\) m, \(s_{c}=10.00\) m, \(L=2.13\) m, \(\theta_{g}=248^{\circ}\), \(R_{K1}=11.0\) m, \(R_{1}=0\)), \(J_{mt,st}=22\)\(\Lambda/\)m\({}^{2}\) (5-frame operation, excepting no. 6; steady state). \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline  & **Supply Method** & \(J_{\pi}\) & \(d_{\alpha\gamma}\) & \(d_{\alpha\gamma}\) & \(d_{\alpha\gamma}\) & \(d_{\alpha\gamma}\) & \(d_{\alpha\gamma}\) & \(E_{\phi}\) & \(E_{\pi\infty}\) & \(V_{\omega,\max}\) & \(R_{d}\) (\(\Omega\)) & \(V_{\omega}\) (V) \\ \hline  & 6 frames operating & 18.33 & 56.08 & \(-\)56.08 & 56.08 & \(-\)56.08 & - & 22.15 & (\(-\))1323 & 1.133 & \(-\)978 \\ \cline{2-11}  & 5 frames operating & (except for no. 6) & 22.00 & 55.44 & \(-\)57.69 & 58.09 & \(-\)53.37 & 2.59 & 26.11 & 7429 & 6.365 & \(-\)624 \\ \cline{2-11}  & 5 frames operating & (except for no. 5) & 22.00 & 57.69 & \(-\)55.44 & 58.09 & \(-\)53.37 & 2.59 & 26.11 & (\(-\))7193 & 6.163 & \(-\)3490 \\ \cline{2-11}  & 5 frames operating & (except for no. 4) & 22.00 & 58.26 & \(-\)51.93 & 56.81 & \(-\)56.81 & 2.54 & 26.13 & (\(-\))10,823 & 9.273 & \(-\)4267 \\ \cline{2-11}  & 5 frames operating & (except for no. 3) & 22.00 & 57.69 & \(-\)55.44 & 53.37 & \(-\)58.09 & 2.59 & 26.11 & (\(-\))7193 & 6.163 & \(-\)3490 \\ \cline{2-11}  & 5 frames operating & (except for no. 2) & 22.00 & 55.44 & \(-\)57.69 & 53.37 & \(-\)58.09 & 2.56 & 26.11 & 7429 & 6.365 & \(-\)624 \\ \cline{2-11}  & 5 frames operating & (except for no. 1) & 22.00 & 51.93 & \(-\)58.26 & 56.81 & \(-\)56.81 & 2.54 & 26.13 & 11,096 & 9.507 & 6624 \\ \cline{2-11}  & 5 frames operating & (except for no. 6) & 22.00 & 55.47 & \(-\)57.81 & 58.20 & \(-\)53.19 & 2.41 & 25.98 & 7844 & 6.721 & \(-\)833 \\ \cline{2-11}  & 5 frames operating & (except for no.