Therefore the case studies are conducted to verify the effectiveness of OTC presented in this paper.
In the 22-bus system, the short circuit currents of node 2, node 9, node 10, node 14 and node 15 are limited below the safety threshold after OTC.
In the IEEE 118-bus system, the short circuit currents are successfully limited as well at eight buses
Both case studies demonstrate that the short circuit currents can be effectively limited below the safety threshold by applying the proposed approach, thereby guaranteeing the security of electrical energy transmission.