DEVICE AND METHOD FOR DETECTING BROKEN LINE SECTION IN DISTRIBUTION LINE

PROBLEM TO BE SOLVED: To provide a device for detecting broken line section in a distribution line, capable of realizing cost reduction with a simple structure, excellent durability and high reliability. SOLUTION: This device for detecting broken line section in the distribution line comprises a detection voltage generator 3 arranged in a system power source 1 side of the distribution line 2, and feeding a current with a predetermined frequency between phases of the distribution line 2 by superimposing a detection voltage with the predetermined frequency different from a commercial frequency between the phases of the distribution line; a plurality of series resonance circuit devices 7 which are arranged between the phases of the distribution line, being distributed at a voluntary position of a load side from the detection voltage generator 3 and which has only a resistance component by series resonance at the predetermined frequency; and a current detecting device 6 for detecting the magnitude of the predetermined frequency current flowing between the phases of the distribution line 2 through the series resonance circuit device 7. The broken line section is determined by the magnitude of the current detected by the current detection device 6. COPYRIGHT: (C)2004,JPO&NCIPI