LIST OF FIGURES

FIG NO PAGE NO

Fig. 1.1 Traditional industrial conception of the electrical

energy supply. 3

Fig. 1.2 New industrial conception of the electrical energy

Supply. 4

Fig. 1.3 Microgrid Configuration. 13

Fig. 2.1 Resistance fault current limiter. 15

Fig. 2.2 Thyristor controlled Series Resonant. 17

Fig. 2.3 Thyristor Controlled Series-Parallel Rectifier. 18

Fig. 2.4 Fault control with a fault-current limiter. 21

Fig. 2.6 Fault-current limiter in the feeder position. 23

Fig. 2.7 Fault-current limiter in the bus-tie position. 23

Fig. 2.8 Fault-current limiter with HTS trigger coil. 25

Fig. 2.9 Inductive fault-current limiter. 26

Fig. 2.10 Schematic diagram of the CRIEPI inductive

FCL (Ichikawa and Okazaki 1995). 28

Fig. 2.11 Configuration of coils in the TEPCO/Toshiba

FCL (Nakade 1994, 34). 29

Fig. 2.12 Typical radial distribution system with relay protection. 32

Fig. 2.13 Radial distribution system with added DG. 32

Fig. 2.14 Novel hybrid fault current limiter/circuit breaker. 35

Fig 2.15 Fault Current Limiter (FCL) on a Diii-transformer. 36

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