| 摘要 |
A power generating apparatus of renewable energy type 1 is provided with: a hydraulic pump 6 configured to be driven by rotation of a rotation shaft; a hydraulic motor 8 configured to be driven by operating oil pressurized by the hydraulic pump 6; a generator 9 connected to the hydraulic motor 8; a closed-cycle circulation path 10 for circulating the operating oil; an accumulator 18, 19 including an oil chamber 18a, 19a in communication with the circulation path 10, a gas chamber 18b, 19b and a diaphragm 18c, 19c; an oil tank 15; a gas-pressure obtaining unit 22, 23 for obtaining a pressure of the gas; an oil-amount measuring unit 21 for measuring an amount of the operating oil in the oil tank 15; a threshold determination unit 31 for determining a threshold value based on change in volume of the gas chamber which is calculated from the pressure of the gas; a comparison unit 32 for comparing the threshold value with the measured amount of the operating oil; and a leak determination unit 33 for determining leak of the operating oil based on a comparison result. |
