| 摘要 |
PROBLEM TO BE SOLVED: To quickly execute accident restoration by reducing an operator's burden and improving accuracy in specifying a ground-fault position. SOLUTION: In the airport light power supply system in which the cables are connected to an AC power supply in the looped shape and a light circuit section 5 including a plurality of load devices regarding the light is connected to the cable in series, the fault point specifying device of the airport light power supply system is provided with: a DC power supply 11 for applying a DC voltage to the light circuit section 5 in place of an AC power supply when the accident is generated; a voltage measurement section 13 for measuring earth voltages of each end of the cables through a filter; a storage section 15 for preserving attribute/circuit configuration information of the light circuit section 5 including the cables; an accident position determining section 14 for specifying a position of a load device of the accident point by using a plurality of measured earth voltages and the attribute/circuit configuration information preserved in the storage section; and an external output device 16 for displaying the accident point at the position of the specified load device existing in image data which configure the light circuit section including the cables obtained from the circuit configuration information. COPYRIGHT: (C)2012,JPO&INPIT |
