| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective relay device capable of suppressing calculation process to minimum, with improved reliability even in a case a failure occurs on a transfer path or a transfer quality is low.SOLUTION: Current differential protective relay devices 1-0, 2-0 are arranged at an end part of a protective section of a power line TL, for transfer of a current value at the end part each other. The current differential protective relay device 1-0 includes a first transfer part 1-7A which receives first data from a first transfer path 6A, a second transfer part 1-7B which receives second data that contains the information identical with the first data from a second transfer path 6B different from the first transfer path 6A, and a calculation process part 1-10 which is configured to enable receiving of data from the first transfer part 1-7A and the second transfer part 1-7B, for performing current differential calculation that uses first-come data between the first data and the second data as well as a current value at an own end. The first data and the second data both contain a current value at an own end and a current value at the other end measured at the same time. |
