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\section{Proposed Visualization Technique}  \subsection{Electrical distance based on Thevenin Impedance}  An intuitive method of calculating the distance between two nodes in an electrical system would be the thevenin impedance. We can derive Zbus matrix from the inverse of Ybus matrix The impedance of a line could be calculated from Klien distance mentioned as in [28]. The relevant calculation is given by Klein Z_bus=