  Kron reduction is a network-reduction method that eliminates nodes with zero
current injections from electrical networks operating in sinusoidal steady
state. In the time domain, the state-of-the-art application of Kron reduction
has been in networks with transmission lines that have constant R/L ratios.
This paper considers RL networks without such restriction and puts forth a
provably exact time-domain generalization of Kron reduction. Exemplifying
empirical tests on a wye-delta network are provided to validate the analytical
results.
