| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission line protection device which can reduce the range to be stopped when a test of the power transmission line protection device is performed.SOLUTION: The power transmission line protection device has: a test setting section which sets test setting information indicating whether the device is in operation or in course of test by receiving an operation input; a communication interface section which transmits the test setting information set by the test setting section to other power transmission line protection device through a transmission path, and receives the test setting information set in the other power transmission line protection device; and a relay operation processing section which performs relay operation, on the basis of the electric quantity detected by a transformer, test setting information set by the test setting section, and the test setting information set by the other power transmission line protection device which is received by the communication interface section. |
