| 摘要 |
PROBLEM TO BE SOLVED: To test a series compensating device by small-scaled facility by connecting a charger and a reactor in parallel with a series compensating device through the medium of switches. SOLUTION: A test circuit is constituted by connecting, in parallel with a series compensating device 10, a reactor 15 through the medium of a switch 17, and a charger 16 through the medium of a switch 18. The series compensating device 10 is composed by connecting a series capacitor 11, an overvoltage protecting element 12, and a series circuit of a reactor 13 and semiconductor switch 14 in parallel respectively. A charger 16 charges a series capacitor 11 with a switch 17 released and with a switch 18 on. When the switch 18 is released and the switch 17 is turned on after the completion of the charging, a resonance current flows in a circuit composed of the series compensating device 10 and the reactor 15. Since the current capacity of the charger 16 is smaller than a test current, it becomes possible to make the capacity of a power source smaller than that of the series capacitor 11, and to reduce the capacity of the facility and the size. |
