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AssigneeHitachi, Ltd.
InventorsKyoko Kojima, Mitsuru Saeki, Shinichiro Aikawa
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Provided is a diagnosis technique with high reliability when a state of lubricating oil of a rotary machine such as a wind power generator is diagnosed by a state monitoring sensor. A diagnosis system of lubricating oil includes a lubricating oil utilization device, a lubricating oil tank for storing lubricating oil to be supplied to the lubricating oil utilization device, and a sensor which measures characteristics of the lubricating oil. In this system, the state of the lubricating oil is diagnosed by using sensor data obtained after a time required for air bubbles in the lubricating oil generated at the time of use of the device disappear elapses since the lubricating oil utilization device is regularly or irregularly stopped.
A diagnosis system of lubricating oil of a wind power generator, comprising:
A diagnosis system of lubricating oil of a wind power generator, comprising:
A diagnosis method of lubricating oil of a wind power generator, which includes a nacelle of the wind power generator, a lubricating oil utilization device disposed within the nacelle, a lubricating oil tank, disposed within the nacelle, for storing lubricating oil to be supplied to the lubricating oil utilization device, a circulation line through which lubricating oil circulated between the lubricating oil tank and the lubricating oil utilization device flows, a chromaticity sensor, disposed within the nacelle, which measures characteristics of the lubricating oil, a sensor, disposed within the nacelle, which measures characteristics of the lubricating oil, and a server, disposed within the nacelle, the method comprising:
Dependencies are inferred from the claim text.