Real-Time Prototyping of Optimal Experiment Design in Power Systems using Modelica and FMI

System identification techniques are incredibly valuable for power system applications. Recent techniques have explored the optimal design for excitation signals in order to maximize an objective function related to an identification procedure. In this context, this paper presents a framework for the deployment of optimal experiment design in power systems using real-time simulation-based experiments. As a first step towards hardware-in-the-loop prototyping of probing experiments, power system models designed with Modelica are exported via FMI standard for deployment in real-time simulators. Results from the real-time simulator show optimized probing signals and provides insights on the chosen optimization weights. The portability of the studied model allows the identification technique to be tested in the real-time simulator environment for probing signal design optimization before field experiments are conducted.