Validation Studies on Interfacing Techniques for Connecting Fully Digital and Analog Real Time Simulators

This paper describes interfacing techniques for connecting fully digital and analog real time simulators. Three types of interfacing techniques, which are applicable for long transmission lines, short transmission lines, and transformers, are developed and tested. Further, these interfacing techniques are validated through detailed simulation studies carried out by actually connecting a fully digital real-time simulator (HYPERSIM) and an analog simulator (PSA). The interfacing technique using a transformer is shown to be quite promising for practical applications.