Such resonance is typically modeled by connecting lumped
capacitance elements externally to the low frequency
transformer model to represent the winding and inter-winding
capacitances. This can be achieved by adding capacitance
elements to the traditional equivalent circuit shown in
Figure 3. When modeling inductive VTs, it is very common
to refer all winding impedances and capacitances to one
voltage level, as shown in Figure 5 [11]. This equivalent
circuit bears some similarity to the high frequency equivalent
circuit for a two winding transformer shown in [12].