Automated Critical Clearing Time calculation for analyzing faults at Entergy

This paper describes the implementation of Critical Clearing Time (CCT) software at Entergy for transient stability analysis. The software utilizes a fast time-domain simulation method to compute critical clearing time under different fault conditions. The framework presented in this paper allows for automated critical clearing time computations that eliminates manual time-consuming cut-and-try critical clearing time calculations. The paper discusses how automatic CCT computations are applied at Entergy for addressing various protection system concerns.