ACCIDENT POINT LOCATING SYSTEM FOR DISTRIBUTION LINE AND ACCIDENT SECTION DETACHING SYSTEM

摘要

PURPOSE:To detect an operation point of a ground sensor by short-circuiting a signal line for connecting the sensor and a slave station by an operation of the ground sensor provided on each distribution line supporting object in each distribution section, and measuring a loop resistance value based on a line resistance. CONSTITUTION:For instance, when a ground accident is generated in a third pole in a distribution section (c), a ground sensor 33 detects it and sends it to a slave station 30, and the slave station 30 puts a discrimination code thereto and transmits 11 it to a master station 10 at a high speed. When a detection current of the sensor 33 is feeble, or it is recovered instantaneously, the master station 10 does not detach the accident section (c), but when a ground current is detected 1 continuously, a section switch to be opened and a loop point switch to be turned on are calculated 12 and a command is outputted to a prescribed slave station from the master station 10. First of all, a slave station 60 turns on a loop point switch SW, based on this command, and subsequently, slave stations 30, 40 open a section switch DM2 and DM3. In such a way, the section (c) is detached but power transmission is continued from a substation SS to sections (a), (b), and adaptable power transmission is executed newly to sections (d), (e) from a loop switch side. Accordingly, it does not occur that a service interruption is generated in a sound section.