System and method for operating a compressor assembly
AssigneeGeneral Electric Company
InventorsKyle Louis Miller, Andrew Breeze-Stringfellow
Life of this patent
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Abstract
A turbo machine, a computer-implemented method, and a computer system for operating a compressor assembly are provided. The method includes comparing a first data set and a second data set to determine a first correlation factor, comparing the first correlation factor to a first threshold that at least partially determines whether a stall precursor exists, removing mean values from the first data set and the second data set, comparing the first data set and the second data set each removed of mean values to determine a second correlation factor, and comparing the second correlation factor to the first threshold, and classifying the stall precursor as either a spike stall precursor, a modal stall precursor, or a combination stall precursor.
Claims20
A computer-implemented method for operating a compressor assembly, the method comprising:
- obtaining a first data set over a first period of time;
- obtaining a second data set over a second period of time after the first period of time;
- comparing the first data set and the second data set to determine a first correlation factor;
- comparing the first correlation factor to a first threshold, wherein the first threshold at least partially determines whether a stall precursor exists;
- removing mean values from the first data set and the second data set;
- comparing the first data set and the second data set each removed of mean values to determine a second correlation factor;
- comparing the second correlation factor to the first threshold, wherein comparing the second correlation factor to the first threshold at least partially determines whether the stall precursor comprises one of a spike stall precursor, a modal stall precursor, or a combination stall precursor;
- and
- classifying the stall precursor as either the spike stall precursor, the modal stall precursor, or the combination stall precursor.
A computing system for operating a turbo machine, the computing system configured to perform operations, the operations comprising:
- obtaining a first data set over a first period of time;
- obtaining a second data set over a second period of time after the first period of time, wherein the second period of time is during a revolution of the turbo machine after obtaining the first data set over the first period of time;
- identifying whether a stall precursor exists at the turbo machine;
- identifying a type of stall precursor, wherein the type of stall precursor comprises one of a spike stall precursor, a modal stall precursor, or a combination stall precursor, and wherein identifying the type of stall precursor comprises:
- comparing the first data set and the second data set to provide a first correlation factor;
- removing mean values from the first data set and the second data set;
- determining a second correlation factor by comparing the first data set and the second data set each removed of mean values;
- and
- comparing the second correlation factor to a first threshold;
- and
- generating a control signal based at least on the identified type of stall precursor.
A turbo machine, the turbo machine comprising:
- a compressor assembly, wherein the compressor assembly comprises a sensor positioned at adjacent stages of compressor blade rows, wherein the sensor is configured to obtain a performance parameter of a fluid through the compressor assembly;
- and
- a controller comprising a processor and memory configured to store instructions that, when executed by the processor, causes the processor to perform operations, the operations comprising:
- obtaining, via the sensor, a first data set over a first period of time during rotation of the compressor assembly;
- obtaining, via the sensor, a second data set over a second period of time following the first period of time, wherein the second period of time corresponds to one or more revolutions of the compressor assembly after the first period of time;
- comparing the first data set and the second data set to determine a first correlation factor;
- removing mean values of the first data set and the second data set;
- determining a second correlation factor by comparing the first data set and the second data set each removed of mean values;
- determining a type of stall precursor at the compressor assembly, wherein determining the type of stall precursor is based at least on comparing the first correlation factor to a first threshold and comparing the second correlation factor to a magnitude threshold, and wherein the type of stall precursor is one of a spike stall precursor, a modal stall precursor, or a combination stall precursor;
- and
- operating the compressor assembly based at least on the determined type of stall precursor.
Dependencies are inferred from the claim text.