Method and system of wind turbine condition monitoring
First Claim
1. A method for monitoring an operating condition of a wind turbine, comprising:
- capturing measurement data and operating condition parameters by various sensors and recording in memory;
assigning the captured measurement data to a correct one of a plurality of bins by;
selecting a subset of the operating condition parameters by a processing unit;
calculating a set of n characterizing moments based on the selected subset of the operating condition parameters by the processing unit, wherein the n characterizing moments comprise a set of values that characterize operational states of the turbine;
defining a finite n-dimensional space, each of the n-dimensional space representing possible values for one of the n characterising moments by the processing unit;
sub-dividing the n-dimensional space into the plurality of bins by the processing unit, each of the bins representing a n-dimensional interval and defining an acceptable range for the set of the n characterizing moments that characterize operational states of the turbine;
defining the n-dimensional interval by n one-dimensional intervals by the processing unit, each of the n one-dimensional intervals representing an interval in one of the n-dimensional space;
determining if the set of the characterising moments falls within the acceptable range for one of the bins by the processing unit;
accepting the set of the characterising moments and the captured measurement data if the set of the characterising moments belongs to the one of the bins by the processing unit;
assigning the captured measurement data to the correct one of the bins based on the acceptable range determination to correlate the captured measurement data with the operational state of the turbine represented by that bin; and
determining if required input values are available for a selected evaluation method from the captured measurement data and evaluating the captured measurement data correlated with operational state of the turbine by bin according to the selected evaluation method.
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Accused Products
Abstract
The invention relates to a method of condition monitoring of a wind turbine. Measurement data and operating condition parameters are captured. A subset of the operating condition parameters is selected. A set of n characterizing moments is calculated based on the subset of operating condition parameters. A finite n-dimensional space each representing possible values for one of the characterising moments is provided. The n-dimensional space is sub-divided into a number of bins each representing a n-dimensional interval defined by n one-dimensional intervals. Each one- dimensional intervals represents an interval in one of the n dimensions. Each bin defines an acceptable range for the set of n characterizing moments. The set of the characterising moments is determined if it belongs to one of the bins. The set of the characterising moments and measurement data are accepted if the set of the characterising moments belongs to one of the bins.
10 Citations
16 Claims
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1. A method for monitoring an operating condition of a wind turbine, comprising:
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capturing measurement data and operating condition parameters by various sensors and recording in memory; assigning the captured measurement data to a correct one of a plurality of bins by; selecting a subset of the operating condition parameters by a processing unit; calculating a set of n characterizing moments based on the selected subset of the operating condition parameters by the processing unit, wherein the n characterizing moments comprise a set of values that characterize operational states of the turbine; defining a finite n-dimensional space, each of the n-dimensional space representing possible values for one of the n characterising moments by the processing unit; sub-dividing the n-dimensional space into the plurality of bins by the processing unit, each of the bins representing a n-dimensional interval and defining an acceptable range for the set of the n characterizing moments that characterize operational states of the turbine; defining the n-dimensional interval by n one-dimensional intervals by the processing unit, each of the n one-dimensional intervals representing an interval in one of the n-dimensional space; determining if the set of the characterising moments falls within the acceptable range for one of the bins by the processing unit; accepting the set of the characterising moments and the captured measurement data if the set of the characterising moments belongs to the one of the bins by the processing unit; assigning the captured measurement data to the correct one of the bins based on the acceptable range determination to correlate the captured measurement data with the operational state of the turbine represented by that bin; and determining if required input values are available for a selected evaluation method from the captured measurement data and evaluating the captured measurement data correlated with operational state of the turbine by bin according to the selected evaluation method. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wind turbine monitoring system for monitoring an operating condition of a wind turbine, comprising:
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a memory that comprises captured measurement data and operating condition parameters and a plurality of bins; and a processing unit that; selects a subset of the operating condition parameters; calculates a set of n characterizing moments based on the selected subset of the operating condition parameters, wherein the n characterizing moments comprise a set of values that characterize operational states of the turbine; defines a finite n-dimensional space, each of the n-dimensional space representing a possible value for one of the n characterising moments; sub-divides the n-dimensional space into the plurality of bins, each of the bins representing a n-dimensional interval and defining an acceptable range for the set of the n characterizing moments that characterize operational states of the turbine; defines the n-dimensional interval by n one-dimensional intervals, each of the n one-dimensional intervals representing an interval in one of the n-dimensional space; determines if the set of the characterising moments falls within the acceptable range for one of the bins; accepts the set of the characterising moments and the captured measurement data if the set of the characterising moments belongs to the one of the bins; assigns the captured measurement data to a correct one of the bins based on the acceptable range determination in order to correlate the captured measurement data with operational state of the turbine represented by that bin; and determines if required input values are available for a selected evaluation method from the captured measurement data and evaluates the captured measurement data correlated with operational state of the turbine by bin according to the selected evaluation method.
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Specification