Method and system for compressor health monitoring
First Claim
1. A method for compressor health monitoring comprising:
- receiving a plurality of turbine data points, wherein each of the turbine data points comprise one or more operating parameters and at least one of a compressor discharge temperature (CTD), and one or more performance parameters;
categorizing the turbine data points into a plurality of bands based on the one or more operating parameters;
computing a baseline variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a first time window;
computing a current variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a second time window, wherein the second time window is shorter than the first time window;
comparing the baseline variability measure and the current variability measure; and
generating an alarm indicator if the current variability measure deviates from the baseline variability measure by a predefined difference.
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Accused Products
Abstract
A method for monitoring the health of a compressor of a gas turbine is disclosed. The method includes receiving a plurality of turbine data points, wherein the plurality of turbine data points may include one or more operating parameters, at least one of a computer discharge temperature (CTD), and one or more performance parameters. The plurality of turbine data points may be categorized based on the one or more operating parameters. A statistical variability measure of at least one of the CTD and the one or more performance parameters may be computed for each of the plurality of bands. An alarm indicator may be computed based on the at least one statistical variability measure. The method may also include combining two or more of the operating parameters, the CTD and the performance parameters using sensor fusion techniques. The alarm indicator may be computed based on the combined parameters.
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Citations
17 Claims
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1. A method for compressor health monitoring comprising:
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receiving a plurality of turbine data points, wherein each of the turbine data points comprise one or more operating parameters and at least one of a compressor discharge temperature (CTD), and one or more performance parameters; categorizing the turbine data points into a plurality of bands based on the one or more operating parameters; computing a baseline variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a first time window; computing a current variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a second time window, wherein the second time window is shorter than the first time window; comparing the baseline variability measure and the current variability measure; and generating an alarm indicator if the current variability measure deviates from the baseline variability measure by a predefined difference. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for compressor health monitoring comprising:
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a receiving module for receiving a plurality of turbine data points, wherein each of the turbine data points comprise one or more operating parameters and at least one of a compressor discharge temperature (CTD), and one or more performance parameters; a data binning module for categorizing the turbine data points into a plurality of bands based on the one or more operating parameters; a baseline variability module for computing a baseline variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a first time window; a current variability module for computing a current variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a second time window, wherein the second time window is shorter than the first time window; and an alarm module for generating an alarm indicator if the current variability measure deviates from the baseline variability measure by a predefined difference. - View Dependent Claims (8, 9, 10, 11)
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12. A computer program product comprising a non-transitory computer readable medium encoded with computer-executable instructions for monitoring health of a compressor, wherein the computer-executable instructions, when executed, cause one or more processors to:
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receive a plurality of turbine data points, wherein each of the turbine data points comprise one or more operating parameters and at least one of a compressor discharge temperature (CTD), and one or more performance parameters; categorize the turbine data points into a plurality of bands based on the one or more operating parameters; compute a baseline variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a first time window; compute a current variability measure of at least one of the CTD and the one or more performance parameters, for each of the plurality of bands over a second time window, wherein the second time window is shorter than the first time window; compare the baseline variability measure and the current variability measure; and generate an alarm indicator if the current variability measure deviates from the baseline variability measure by a predefined difference. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification