Advanced Special Protection System Modeling for On-Line Applications

Dynamic Security Assessment (DSA) is an important way for ensuring the secure and reliable operation of power systems. The current trend is to perform DSA on line using near real-time data. One of the modeling considerations for DSA is special protection systems (SPS). This paper describes a framework that is designed to model SPS for DSA, particularly with respect to on-line applications. It is based on a modular user-defined modeling concept which provides the functionality and flexibility required. This approach is illustrated with practical SPS models and the simulation applications.