| 摘要 |
A power generating apparatus of renewable energy type is provided with a rotation shaft 8, a hydraulic pump 12 driven by the rotation shat 8, a hydraulic motor 14 driven by operating oil pressurized by the hydraulic pump 12, a generator 20 and a pitch drive unit 5. When a fault even occurs, a deviation of a state indicating an operation state of the power generating apparatus of renewable energy type 1 from a normal state value being a state value during a normal operation is calculated. When the deviation is not less than a first threshold value, the stop control unit 40 performs by means of a hard-wired circuit at least one of: switching the hydraulic pump 12 to an idle state; switching the hydraulic motor 14 to an idle state; and switching the pitch angle toward a feathering position using the pitch drive mechanism 5. When the deviation is less than the first thresholds and not less than a second threshold which is closer to the normal value than the first threshold, the stop control unit 40 performs by software control all of: switching the hydraulic pump 12 to the idle state; switching the hydraulic motor 14 to the idle state; and switching the pitch angle toward the feathering position using the pitch drive mechanism 5. |
