**5. Sensitivity analysis of power system harmonic response**

A sensitivity analysis of all variables involved in location of the parallel and series resonance is performed from (22). Thus, considering the range of the variables, Fig. 10 shows the contour plots of the harmonics where the parallel and series resonance is located. These harmonics are calculated from the expression of *kr*, a, (22), and the τ1 range is fixed from (4) considering the λ*<sup>L</sup>* value. From Fig. 10, it can be noted that

Fig. 10. Contour plots of *kr*, a.

