\documentclass[10pt]{article}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\usepackage{ifluatex,ifxetex}
\ifluatex
  \usepackage{fontspec}
  \setmainfont{Free Serif}
\else\ifxetex
  \usepackage{fontspec}
  \setmainfont{FreeSerif}
\else
  \usepackage{ucs}
  \SetUnicodeOption{mathletters}
  \usepackage[utf8x]{inputenc}
\fi\fi

\usepackage{gnuplot-lua-tikz}
\pagestyle{empty}
\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{\gpbboxborder}
\begin{document}

\begin{tikzpicture}[gnuplot]
%% generated with GNUPLOT 5.4p8 (Lua 5.3; terminal rev. Jun 2020, script rev. 118)
%% Mon Nov  6 17:42:50 2023
\path (0.000,0.000) rectangle (12.500,8.750);
\gpcolor{color=gp lt color border}
\gpsetlinetype{gp lt border}
\gpsetdashtype{gp dt solid}
\gpsetlinewidth{1.00}
\draw[gp path] (1.504,0.985)--(1.684,0.985);
\node[gp node right] at (1.320,0.985) {$0.8$};
\draw[gp path] (1.504,2.228)--(1.684,2.228);
\node[gp node right] at (1.320,2.228) {$0.85$};
\draw[gp path] (1.504,3.470)--(1.684,3.470);
\node[gp node right] at (1.320,3.470) {$0.9$};
\draw[gp path] (1.504,4.713)--(1.684,4.713);
\node[gp node right] at (1.320,4.713) {$0.95$};
\draw[gp path] (1.504,5.956)--(1.684,5.956);
\node[gp node right] at (1.320,5.956) {$1$};
\draw[gp path] (1.504,7.198)--(1.684,7.198);
\node[gp node right] at (1.320,7.198) {$1.05$};
\draw[gp path] (1.504,8.441)--(1.684,8.441);
\node[gp node right] at (1.320,8.441) {$1.1$};
\draw[gp path] (1.504,0.985)--(1.504,1.165);
\node[gp node center] at (1.504,0.677) {$0$};
\draw[gp path] (2.715,0.985)--(2.715,1.165);
\node[gp node center] at (2.715,0.677) {$10000$};
\draw[gp path] (3.927,0.985)--(3.927,1.165);
\node[gp node center] at (3.927,0.677) {$20000$};
\draw[gp path] (5.138,0.985)--(5.138,1.165);
\node[gp node center] at (5.138,0.677) {$30000$};
\draw[gp path] (6.350,0.985)--(6.350,1.165);
\node[gp node center] at (6.350,0.677) {$40000$};
\draw[gp path] (7.561,0.985)--(7.561,1.165);
\node[gp node center] at (7.561,0.677) {$50000$};
\draw[gp path] (8.773,0.985)--(8.773,1.165);
\node[gp node center] at (8.773,0.677) {$60000$};
\draw[gp path] (9.984,0.985)--(9.984,1.165);
\node[gp node center] at (9.984,0.677) {$70000$};
\draw[gp path] (11.196,0.985)--(11.196,1.165);
\node[gp node center] at (11.196,0.677) {$80000$};
\draw[gp path] (1.504,8.441)--(1.504,0.985)--(11.947,0.985);
\node[gp node center,rotate=-270] at (0.108,4.713) {\(V\) (p.u.)};
\node[gp node center] at (6.725,0.215) {Time (sec)};
\node[gp node right] at (8.574,8.287) {$1.1$};
\gpcolor{color=gp lt color axes}
\gpsetlinetype{gp lt axes}
\gpsetdashtype{gp dt axes}
\draw[gp path] (8.758,8.287)--(9.674,8.287);
\draw[gp path] (1.504,8.441)--(1.609,8.441)--(1.715,8.441)--(1.820,8.441)--(1.926,8.441)%
  --(2.031,8.441)--(2.137,8.441)--(2.242,8.441)--(2.348,8.441)--(2.453,8.441)--(2.559,8.441)%
  --(2.664,8.441)--(2.770,8.441)--(2.875,8.441)--(2.981,8.441)--(3.086,8.441)--(3.192,8.441)%
  --(3.297,8.441)--(3.403,8.441)--(3.508,8.441)--(3.614,8.441)--(3.719,8.441)--(3.825,8.441)%
  --(3.930,8.441)--(4.036,8.441)--(4.141,8.441)--(4.247,8.441)--(4.352,8.441)--(4.458,8.441)%
  --(4.563,8.441)--(4.669,8.441)--(4.774,8.441)--(4.880,8.441)--(4.985,8.441)--(5.090,8.441)%
  --(5.196,8.441)--(5.301,8.441)--(5.407,8.441)--(5.512,8.441)--(5.618,8.441)--(5.723,8.441)%
  --(5.829,8.441)--(5.934,8.441)--(6.040,8.441)--(6.145,8.441)--(6.251,8.441)--(6.356,8.441)%
  --(6.462,8.441)--(6.567,8.441)--(6.673,8.441)--(6.778,8.441)--(6.884,8.441)--(6.989,8.441)%
  --(7.095,8.441)--(7.200,8.441)--(7.306,8.441)--(7.411,8.441)--(7.517,8.441)--(7.622,8.441)%
  --(7.728,8.441)--(7.833,8.441)--(7.939,8.441)--(8.044,8.441)--(8.150,8.441)--(8.255,8.441)%
  --(8.361,8.441)--(8.466,8.441)--(8.571,8.441)--(8.677,8.441)--(8.782,8.441)--(8.888,8.441)%
  --(8.993,8.441)--(9.099,8.441)--(9.204,8.441)--(9.310,8.441)--(9.415,8.441)--(9.521,8.441)%
  --(9.626,8.441)--(9.732,8.441)--(9.837,8.441)--(9.943,8.441)--(10.048,8.441)--(10.154,8.441)%
  --(10.259,8.441)--(10.365,8.441)--(10.470,8.441)--(10.576,8.441)--(10.681,8.441)--(10.787,8.441)%
  --(10.892,8.441)--(10.998,8.441)--(11.103,8.441)--(11.209,8.441)--(11.314,8.441)--(11.420,8.441)%
  --(11.525,8.441)--(11.631,8.441)--(11.736,8.441)--(11.842,8.441)--(11.947,8.441);
\gpcolor{color=gp lt color border}
\node[gp node right] at (8.574,7.979) {\(V_{50}\)};
\gpcolor{rgb color={0.000,0.620,0.451}}
\gpsetlinetype{gp lt border}
\gpsetdashtype{gp dt solid}
\draw[gp path] (8.758,7.979)--(9.674,7.979);
\draw[gp path] (1.567,0.985)--(1.577,3.796)--(1.649,3.796)--(1.722,3.796)--(1.795,3.796)%
  --(1.867,3.796)--(1.940,3.796)--(2.013,3.796)--(2.086,3.796)--(2.158,3.796)--(2.231,3.796)%
  --(2.304,4.063)--(2.376,4.063)--(2.449,4.245)--(2.522,4.245)--(2.594,4.320)--(2.667,4.320)%
  --(2.740,4.318)--(2.812,4.318)--(2.885,4.331)--(2.958,4.331)--(3.030,4.329)--(3.103,4.324)%
  --(3.176,4.338)--(3.249,4.375)--(3.321,4.352)--(3.394,4.326)--(3.467,4.311)--(3.539,4.296)%
  --(3.612,4.296)--(3.685,3.900)--(3.757,3.913)--(3.830,3.913)--(3.903,3.660)--(3.975,3.660)%
  --(4.048,3.621)--(4.121,3.643)--(4.193,3.049)--(4.266,3.083)--(4.339,3.083)--(4.412,3.083)%
  --(4.484,2.739)--(4.557,2.739)--(4.630,2.739)--(4.702,2.700)--(4.775,2.722)--(4.848,2.722)%
  --(4.920,2.727)--(4.993,2.254)--(5.066,1.978)--(5.138,1.955)--(5.211,1.955)--(5.284,1.905)%
  --(5.357,1.905)--(5.429,1.905)--(5.502,1.905)--(5.575,1.905)--(5.647,1.922)--(5.720,1.922)%
  --(5.793,1.920)--(5.865,1.633)--(5.938,1.634)--(6.011,1.615)--(6.083,1.441)--(6.156,1.412)%
  --(6.229,1.412)--(6.301,1.404)--(6.374,1.281)--(6.447,1.281)--(6.520,1.279)--(6.592,1.207)%
  --(6.665,1.207)--(6.738,1.205)--(6.810,1.185)--(6.883,1.185)--(6.956,1.180)--(7.028,1.164)%
  --(7.101,1.149)--(7.174,1.132)--(7.246,1.132)--(7.319,1.132)--(7.392,1.132)--(7.465,1.088)%
  --(7.537,1.088)--(7.610,1.089)--(7.683,1.093)--(7.755,1.093)--(7.828,1.076)--(7.901,1.148)%
  --(7.973,1.107)--(8.046,1.107)--(8.119,1.227)--(8.191,1.204)--(8.264,1.187)--(8.337,1.187)%
  --(8.409,1.191)--(8.482,1.199)--(8.555,1.357)--(8.628,1.358)--(8.700,1.377)--(8.773,1.388)%
  --(8.846,1.388)--(8.918,1.388)--(8.991,1.341)--(9.064,1.635)--(9.136,1.635)--(9.209,1.596)%
  --(9.282,1.575)--(9.354,1.566)--(9.427,1.535)--(9.500,1.831)--(9.572,2.350)--(9.645,2.367)%
  --(9.718,2.367)--(9.791,2.367)--(9.863,2.323)--(9.936,2.325)--(10.009,2.940)--(10.081,2.970)%
  --(10.154,2.972)--(10.227,2.972)--(10.299,3.281)--(10.372,3.260)--(10.445,3.260)--(10.517,3.288)%
  --(10.590,3.288)--(10.663,3.288)--(10.736,3.288)--(10.808,3.309)--(10.881,3.706)--(10.954,3.705)%
  --(11.026,3.705)--(11.099,3.705)--(11.172,3.932)--(11.244,3.890)--(11.317,3.888)--(11.390,3.891)%
  --(11.462,3.894)--(11.535,3.894)--(11.608,3.894)--(11.680,3.839)--(11.753,3.839)--(11.826,3.816)%
  --(11.899,3.882)--(11.947,3.884);
\gpcolor{color=gp lt color border}
\node[gp node right] at (8.574,7.671) {$0.9$};
\gpcolor{color=gp lt color axes}
\gpsetlinetype{gp lt axes}
\gpsetdashtype{gp dt axes}
\draw[gp path] (8.758,7.671)--(9.674,7.671);
\draw[gp path] (1.504,3.470)--(1.609,3.470)--(1.715,3.470)--(1.820,3.470)--(1.926,3.470)%
  --(2.031,3.470)--(2.137,3.470)--(2.242,3.470)--(2.348,3.470)--(2.453,3.470)--(2.559,3.470)%
  --(2.664,3.470)--(2.770,3.470)--(2.875,3.470)--(2.981,3.470)--(3.086,3.470)--(3.192,3.470)%
  --(3.297,3.470)--(3.403,3.470)--(3.508,3.470)--(3.614,3.470)--(3.719,3.470)--(3.825,3.470)%
  --(3.930,3.470)--(4.036,3.470)--(4.141,3.470)--(4.247,3.470)--(4.352,3.470)--(4.458,3.470)%
  --(4.563,3.470)--(4.669,3.470)--(4.774,3.470)--(4.880,3.470)--(4.985,3.470)--(5.090,3.470)%
  --(5.196,3.470)--(5.301,3.470)--(5.407,3.470)--(5.512,3.470)--(5.618,3.470)--(5.723,3.470)%
  --(5.829,3.470)--(5.934,3.470)--(6.040,3.470)--(6.145,3.470)--(6.251,3.470)--(6.356,3.470)%
  --(6.462,3.470)--(6.567,3.470)--(6.673,3.470)--(6.778,3.470)--(6.884,3.470)--(6.989,3.470)%
  --(7.095,3.470)--(7.200,3.470)--(7.306,3.470)--(7.411,3.470)--(7.517,3.470)--(7.622,3.470)%
  --(7.728,3.470)--(7.833,3.470)--(7.939,3.470)--(8.044,3.470)--(8.150,3.470)--(8.255,3.470)%
  --(8.361,3.470)--(8.466,3.470)--(8.571,3.470)--(8.677,3.470)--(8.782,3.470)--(8.888,3.470)%
  --(8.993,3.470)--(9.099,3.470)--(9.204,3.470)--(9.310,3.470)--(9.415,3.470)--(9.521,3.470)%
  --(9.626,3.470)--(9.732,3.470)--(9.837,3.470)--(9.943,3.470)--(10.048,3.470)--(10.154,3.470)%
  --(10.259,3.470)--(10.365,3.470)--(10.470,3.470)--(10.576,3.470)--(10.681,3.470)--(10.787,3.470)%
  --(10.892,3.470)--(10.998,3.470)--(11.103,3.470)--(11.209,3.470)--(11.314,3.470)--(11.420,3.470)%
  --(11.525,3.470)--(11.631,3.470)--(11.736,3.470)--(11.842,3.470)--(11.947,3.470);
\gpcolor{color=gp lt color border}
\gpsetlinetype{gp lt border}
\gpsetdashtype{gp dt solid}
\draw[gp path] (1.504,8.441)--(1.504,0.985)--(11.947,0.985);
%% coordinates of the plot area
\gpdefrectangularnode{gp plot 1}{\pgfpoint{1.504cm}{0.985cm}}{\pgfpoint{11.947cm}{8.441cm}}
\end{tikzpicture}
%% gnuplot variables
\end{document}