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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_thev= Z_ii Z_(bus)_(thev)= Z_(ii)  + Z_jj Z_(jj)  - Z_ij Z_(ij)  - Z_ji Z_(ji)