//SYS21/F:/PEC/REVISES_10-11-01/075065126-CH001.3D ± 12 ± [1±30/30] 17.11.2001 9:43AM 12 Electrical power systems ± an overview Fig. 1.9 Three-phase thyristor-controlled reactor connected in delta. Fig. 1.10 Three-phase GTO-based STATCOM.