PURPOSE: To shorten power interruption interval by communicating information each other and detecting faulty section independently through each pole controller then opening each switchgear and preventing closing thereof upon judgement that the section adjoining to the switchgear is faulty.
CONSTITUTION: Assuming that shortcircuit fault occurs in section 3, a switchgear controller 3a detects the shortcircuit fault and transmits fault information to an adjoining switchgear controller 3b. A switchgear controller 3c which does not detect fault receives the fault information from the switchgear controller 3b and informs that it is not detecting a fault to the switchgear controller 3b. The switchgear controllers 3b, 3c open the switchgears 2b, 2c immediately through the logic circuit shown on the drawing thus completing separation of the faulty section 3 instantaneously. By such arrangement, ground fault section or shortcircuit fault section can be separated without interrupting power in the sound section at the source side of the faulty section.
NODA KIYOSHI
NISHIKAWA TAKATSUGU
NARITA KAZUTOYO
FUJISAWA ATSUSHI
| JPS55100027A | 1980-07-30 |