Power system transient stability enhancement using protection device agent

The critical fault clearing time is an indicator of transient stability margin and it changes with the generator load condition. If the protection devices are capable of operating before the critical clearing time (CCT) and also providing faster auto-reclosing as soon as the fault is cleared, then the system will not loose its synchronism and remain in stable operation. The goal of this paper is to employ the multi-agent technology to enhance transient stability with a switching control algorithm, where the major challenge is to maintain the stability of the system with the protection device agent action. Each protection device agent has switching control algorithm and is capable of operating with the information of critical clearing time to make the system stable and reliable.