Analysis and comparison of algorithm and model for power flow calculation with FACTS devices

FACTS (Flexible AC Transmission Systems) that can rapidly control the active power, reactive power and voltage of transmission line, is becoming one of the study focus. But at the same time, some difficulties have been occurred in power flow calculation with FACTS devices. In this paper, the modeling and algorithms for power flow calculation of power system with FACTS devices are classified, the recent research results are summarized, and the features, applications and deficiencies of various algorithms and models are analyzed. Finally, this paper makes discussions on further study in choice of state variables, selection of initial value and exceeding constraint of control variables, and analyses the direction of research on power flow calculation with FACTS.