| 摘要 |
<p>PURPOSE:To improve the reliability in protection for the trouble of a generating line, etc. by installing the first and the second series circuits consisting of the semiconductors series-connected in reverse polarity into an electric passage connecting two tramways with a forward electric power and reverse electric power converters and connecting semiconductor breakers between the both circuits. CONSTITUTION:In an electricity feeding apparatus equipped with a forward electric power converter 2 and an inverse electric power converter 3, the first series circuits 23a-23d consisting of the diodes 21-21d and 22-22d whose cathode sides are connected each other are installed between a power generating line 4 and the d.c. disconnecting devices 10a-10d connected to the first and the second electric tramways 11a,, 14a and 11b, 14b divided by the dead sections 12a and 12b. Further, the second series circuits 26a-26d consisting of the diodes 24a'n24d and 25a-25d whose anode sides are connected each other are interposed between a generating line 8 for regeneration and the d.c. disconnecting devices 10a-10d. Further, GTO thyristor disconnecting devices 29a-29d are connected between the common connecting points 27a-27d and 28a-28d of each series circuit.</p> |
