Dynamic security assessment using time-domain simulator

In this paper, implementation of power system dynamic security assessment (DSA) into a time domain simulation environment is described. The paper discusses general characteristics of DSA in time domain and presents a framework for software implementation. The implemented DSA system is user oriented and enables simple investigation of power system security in normal or contingency provoked system conditions. Using continuous processing, DSA is fully automated and can process any number of cases without user interaction, however, with some user established security constraints. If a security violation is detected, the contingency is documented and more detailed case study is possible. The paper presents methodology of implementation of DSA into well established simulator PSStradeNETOMAC, an overview of the considered power system security constraints and visualization options developed. The paper concludes with a case study. The DSA system was tested for performance on a generic single processor computer.