Interactive Protection System Simulation Using ATP MODELS and C++

This paper presents a new approach for interactive protection system simulation. In this approach, the power system network is modeled by the ATP program while the "compiled foreign model" mechanism of MODELS language is employed to model the digital protective relay in C++ language. This allows "object-oriented" relay modeling as well as building a "seamless" interface between the power system network model and the relay model. An example is used to demonstrate the interactive protection system simulation developed using the new approach