Dynamic Modeling in OpenDSS: An Implementation Sequence for Object Pascal

This paper presents a procedure to implement user-written models in OpenDSS for dynamic simulations using its predefined generator element and the software's original source code in Object Pascal. The implications on the coding of a dynamic model, the internal structure and the solving algorithm sequence are addressed in order to guide the user through such process. The aforementioned is illustrated by implementing a fourth order synchronous machine as generator model and a second order hydro turbine as shaft model.