Status monitoring for mechanical plants, in particular wind turbines
AssigneeVestas Wind Systems A/S
InventorsJannes Kreutzfeldt, Matthias Schulz
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Abstract
The invention relates to a method for monitoring a status of at least one component of a mechanical plant, in particular of a wind turbine, that comprises the following steps: (i) receiving an evaluation signal that is formed based on values of a measurement quantity recorded in the plant, (ii) determining at least one parameter data set on the basis of the evaluation signal as a function of a signal that is representative for a stress of the plant and/or based on a spectral analysis of the evaluation signal, (iii) evaluation of an indicator signal as a function of at least one parameter data set and determining the status of the component of the plant as a function of the indicator signal.
Claims20
A method for monitoring a status of at least one component of a wind turbine, comprising:
- receiving an evaluation signal that is formed based on values of a measurement quantity recorded by a sensor in the wind turbine;
- determining at least one parameter data set based on at least one of the evaluation signal as a function of a signal that is representative for a stress of the wind turbine or a spectral analysis of the evaluation signal;
- determining a spread of the at least one parameter data set;
- and
- determining the status of the component of the wind turbine as a function of the spread, wherein the status determination is performed independently of the vibration frequencies of at least one of a rotating component of the wind turbine or bearings of the component of the wind turbine that are induced by damage.
A non-transitory computer readable medium storing a computer program comprising a program code that prompts a computer system to perform an operation of monitoring of a status of at least one component of a wind turbine when the computer program is run on the computer system, the operation comprising:
- receiving an evaluation signal that is formed based on values of a measurement quantity recorded by a sensor in the wind turbine;
- determining at least one parameter data set based on at least one of the evaluation signal as a function of a signal that is representative for a stress of the wind turbine or based on a spectral analysis of the evaluation signal;
- determining a spread of the at least one parameter data set;
- and
- determining the status of the component of the wind turbine as a function of the spread, wherein the status determination is performed independently of the vibration frequencies of at least one of a rotating component of the wind turbine or bearings of the component of the wind turbine that are induced by damage.
A monitoring device for monitoring a status of at least one component of a wind turbine, wherein the monitoring device is configured to, at least:
- receive an evaluation signal that is formed based on values of a measurement quantity that is recorded by a sensor in the wind turbine,
- determine at least one parameter data set based on at least one of the evaluation signal as a function of a signal that is representative for the stress of the wind turbine or based on a spectral analysis of the evaluation signal,
- identify a spread of the at least one parameter data set, and
- determine the status of the component of the wind turbine as a function of the spread, wherein the status determination is performed independently of vibration frequencies of at least one of a rotating component of the wind turbine or bearings of the component of the wind turbine induced by damage.
Dependencies are inferred from the claim text.