## 2 Materials and Methods
The highest value of the zero-sequence voltage asymmetry factor occurs at a detuning factor of s = 0%, i.e., at resonance, and is 30-90%. As with the analytical calculation, increasing the value of the detuning factor to 10% reduces the  
Figure 8: Graph of the relationship \(\alpha_{U2}=f(\text{s})\) for an MV line with a 70 mm\({}^{2}\) conductor cross-section for the analytical model. Figure 7: Graph of the relationship \(\alpha_{U2}=f(\text{s})\) for an MV line with a 50 mm\({}^{2}\) conductor cross-section for the analytical model. At the MV buses of the transformer station, the value of the zero-sequence voltage asymmetry factor \(\alpha_{\text{UU}}\) is the smallest and does not depend on the cross-section of the power line conductors. The impact of line construction is only noticeable beyond 2 km and is greater the greater the distance from the station. The variation in \(\alpha_{\text{UU}}\) factor values changes in an approximately rectilinear manner up to a length of about 11 km, after which the relationship becomes increasingly smaller (in lines longer than 19 km, the relationship between voltage asymmetry and line length is negligible). The largest values of the zero-sequence voltage asymmetry factor occur for lines with a conductor cross-section of 35 mm\({}^{2}\) and decrease as the cross-section increases (line resistance decreases) for any detuning factor. It is worth noting that the zero-sequence voltage asymmetry does not depend on the nature of the detuning (whether there will be under- or over-compensation in the grid). Figure 11: Graph of the relationship \(\alpha_{\text{UU}}=\)f(s) for an MV line with a 50 mm\({}^{2}\) conductor cross-section for the computer model. Figure 12: Graph of the relationship \(\alpha_{\text{UU}}=\)f(s) for an MV line with a 70 mm\({}^{2}\) conductor cross-section for the computer model. Figures 16-18 show the waveforms (for different conductor cross-sections), showing the relationship between the negative-sequence voltage asymmetry factor \(\alpha_{\text{U2}}\) and the network detuning factor s at different points on the line. An analysis of the curves shown in Figures 16-18 shows that, as with the analytical calculations, the negative-sequence voltage asymmetry factor \(\alpha_{\text{U2}}\) does not essentially depend on the detuning of the earth fault compensation. Analogously, as before, the values of the \(\alpha_{\text{U2}}\) factor increase with increasing distance from the substation and decrease with increasing conductor cross-section. Figure 4:0 Graph of the dependence of the \(\alpha_{\text{U0}}\) factor on distance from the HV/MV substation for different MV line conductor cross-sections at a detuning factor of s = 0%. Figure 4:1 Graph of the dependence of the \(\alpha_{\text{U0}}\) factor on distance from the HV/MV substation for different MV line conductor cross-sections at a detuning factor of s = \(-\)20%. In order to further determine the influence of the line length on the value of the negative-sequence voltage asymmetry factor \(\alpha_{\text{U2}}\), the relationship waveforms were determined for three values of the detuning factor, s = \(-20\%\), s = \(0\%\) and s = \(20\%\), which are shown in Figures 19-21. Figure 4:2 Graph of the relationship \(\alpha_{\text{U2}}\) =\(f\)(s) for an MV line with a 35 mm\({}^{2}\) conductor cross-section for the computer model. Figure 4:3 Graph of the dependence of the \(\alpha_{\text{U0}}\) factor on distance from the HV/MV substation for different MV line conductor cross-sections at a detuning factor of s = \(20\%\). In the case of the negative-sequence voltage asymmetry factor \(\alpha_{\text{U2}}\), some analogies to the relationships observed in the analysis of the zero-sequence voltage asymmetry factor \(\alpha_{\text{U0}}\) are noticeable. In this case, also up to 1 km from the substation, the cross-section of the wires used in the line is not relevant. For distances between 1 and 14 km, the relationship is approximately rectilinear (in the previous case it was 1 km less).