Abnormality diagnosis apparatus and abnormality diagnosis method for hydraulic operating mechanism

摘要

The abnormality diagnosis device (2) diagnoses an abnormality of the hydraulic operation mechanism (1) that operates turning on and off of the circuit breaker. The abnormality diagnosis device (2) starts when the hydraulic pressure held in the hydraulic operation mechanism (1) drops to the first reference pressure and stops when the hydraulic pressure rises to the second reference pressure. A first counter (21) that is a counter that counts the number of times that an operation has been performed, and a timer that measures an operation interval that is the time from when the boost operation is stopped until the next boost operation is started ( 24) and an abnormality in which the number of boosting operations obtained based on the count result by the counter is corrected based on the operation interval, and the presence or absence of abnormality in the hydraulic operation mechanism is determined using the corrected data of the number of boosting operations And a determination unit (25).