## 3 Electrode Station Configuration
### General Remarks
* The deviation in the maximum developing electric field strength of the electrode station compared to a single frame (19.08 V/m against 17.96 V/m, according to Table 11 in [2]) is of the order of 6.2%, which is limited and smaller than that of the first configuration (19.08 V/m versus 19.73 V/m of Table 14 in [2]). However, the necessary distances are observed here. * The critical zone of the dam extends beyond it by 29.7 m on the outer side (with a crest width of 5 m and a suspension distance of at least 1 m) along the xOx/  axis (perpendicular to the dam), which is practically identical to the value of the first configuration (against 30.3 m). * The critical zone of the dam extends beyond it by 48 m (i.e., 24 m on either side) along the yOy/  axis (parallel to the dam axis) in the coastal area. This is partly due to the fact that the initially estimated required length of the assumed electrode station is 56.7 m (along the yOy/  axis), the corresponding actual required length is 97.8 m (from the results of the superposition model, according to Table 1), while the available length is only 50 m.
* The developed absolute potentials and the corresponding values of the electrode station resistance, with respect to remote earth, are slightly worse (18.40 kV, 15.76 \(\Omega\)) compared to the initial configuration (17.30 kV and 14.82 \(\Omega\), according to Table 15 in [2]). Summing up, the second configuration only slightly improves the overall results, providing, most importantly, a better exploitation of the water within the protective barrier and achieving slightly better safety conditions for the diver during the maintenance phase at the expense of a more complex construction. Third Electrode Station Configuration--Straight Frames in Two Overlapping Rows, Each Placed Parallel to the Longitudinal Axis of the Dam in Alignment with Each Other  
The corresponding configuration of the electrode station is carried out according to Figure 7, where the straight frame has the characteristics of the basic configuration (\(N_{el\_frame}=13\), \(\ell_{p}=0.50\) m, \(\ell_{f}=6.00\) m). In the case of Korakia, the distance between the frames \(d_{fp}\) (on the xOx/  axis) is 11.0 m, with the consequence that the total width, according to Equation (31), amounts to 11.25 m. The distance between the frames (on the yOy/  axis) is equal to \(s_{c}\), taken here as 10.0 m (against the estimated 8.53 m, according to Table 10 in [2]), due to length availability. Therefore, the total necessary estimated length of protective dam, behind which the array will be situated, by Equation (30), will be equal to 58.0 m. Accordingly, for the case of Stachtoroi, the distance between the frames \(d_{fp}\) (on the xOx/ ) is 8.0 m, resulting in a total width, according to Equation (31), of 8.25 m. The distance between the frames (on the yOy/ ) is equal to \(s_{c}\), taken here as 6.0 m (against the estimated 5.788 m, according to Table 11 in [2]), due to length availability. Therefore, the total necessary estimated length of the protective dam, behind which the array will be situated, according to Equation (30), will be equal to 42.0 m. From the relevant simulation, the results of Table 2 are obtained, which include, depending on the mode of operation:  
* The current density \(J_{st}\) with respect to the peripheral surface;
* The width \(d_{stp\_Ox}\) of the electrode station critical zone, vertical to the dam (along the semi-axis Ox);
* The width \(d_{stp\_Ox/}\) of the electrode station critical zone, vertical to the dam (along the semi-axis Ox/ );
* The length of the electrode station critical zone \(\ell_{cud}\) on the dam above the centre of the dam (on the yOy/  axis);* The length of the electrode station critical zone \(\ell_{c\!d\!l}\) on the dam below the centre of the dam (on the yOy\({}^{\prime}\) axis);
* The maximum electric field strength within the area of the frame that is out of operation \(E_{\!\textit{eff}}\);
* The maximum electric field strength of the arrangement \(E_{max}\).