Gabriel Kron developed tensorial analysis of networks (TAN) in 1939 to deal with electrical machines. This formalism has been extended to applications in the Electromagnetic Compatibility (EMC) domain. Using such a topological approach to deal with complex systems is particularly relevant in the design phases compared to numerical approaches and allows a problem to be studied in an abstract way. In this paper the robust mathematical approach is synthesized. Then, after explaining how cords are added to the TAN method, we apply the formalism to three typical examples.