Using the topological and state-variable approach, this paper respectively formulates the linear' 3-phase network equations to give a time-domain simulation model of 3-phase thyristor rectifier system. The analysis and calculation on the bus currents and v發tages of the rectifier system has been carried out, and the curve about the capacity of rectifier equipment fitting in with the short circuit capacity of power system is provided. Especially, through the analysis on the system which contains power capacit...