Detailed modeling of telecom AC-DC backup generation power systems using voltage-behind-reactance synchronous machine model

This paper focuses on the backup generation units of the telecommunication power systems and presents a fast and accurate model of the alternators used in such systems. The presented model is faster and more accurate as compared to the models existing in the libraries of commonly-used simulation programs. The model is based on a recently developed constant-parameter voltage-behind-reactance (CP-VBR) formulation whose application with power electronic elements is verified in this paper. The formulation of this model is presented for implementation in different simulation programs. The simulation results show that the presented new model is very accurate (about 1% numerical error) for studies of dc backup generation system and is an order-of-magnitude faster than existing classical models. The new model can facilitate the design of ac-dc power systems.