Thyristor Controlled Rectifiers for Subway Substations

This paper presents the analysis of subway thyristor controlled rectifier substations. The classical analysis developed for 12 pulse diode bridges is adapted to consider thyristors and simulated. This simulation considers the simultaneous operation of several rectifiers connected to the same distribution network. Simulation results show that the harmonic impact of these rectifiers on the distribution network is considerable and is amplified by the cable capacitances. Measurements taken on a 12 pulse diode rectifier substation confirm this amplification effect