In this section, the case study is based on a 22-bus AC power system, as is shown in Fig. 5 [24].
The base value of short circuit currents is 3.6 kA [24]. In practice, the relationship between the short circuit current and the interrupting capacity is shown in (13). hf is the coefficient of aperiodic components, reflecting the influence of the aperiodic
short circuit currents. In this paper, hf=1.1.