Method and apparatus for detecting faults in steam generator system components and other continuous processes
First Claim
1. A method for detecting a fault in a component of a continuous process, comprising:
- developing a model of said continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods.
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Abstract
A method and apparatus and for detecting faults in components of a continuous process such as a steam generator. A model of the process is developed using a modeling technique such as advanced pattern recognition and the model is used to generate predicted values for a predetermined number of the operating parameters of the process. Statistical process control methods are used to determine if the difference between the predicted and actual measured values for one or more of the parameters exceeds a configured statistical limit. A rule set is used to indicate an actual or probable fault in a component of the continuous process.
24 Citations
29 Claims
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1. A method for detecting a fault in a component of a continuous process, comprising:
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developing a model of said continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A process plant comprising:
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a computing device for detecting a fault in a component of a continuous process operating in said plant, said computing device for developing a model of said continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods. - View Dependent Claims (14, 15, 16, 17)
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18. In a process plant comprising:
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a continuous process having one or more components;
a computing device for detecting a fault in said one or more components of said continuous process, said computing device for developing a model of said continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods. - View Dependent Claims (19, 20, 21)
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22. A computer readable medium having instructions for performing a method for detecting a fault in a component of a continuous process operating in a process plant, said instructions comprising:
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developing a model of said continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods. - View Dependent Claims (23, 24, 25)
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26. An apparatus comprising:
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a processing device for;
developing a model of a continuous process;
generating predicted values for a predetermined number of operating parameters of said continuous process using said model;
comparing the value predicted by said model for each of said predetermined number of operating parameters to a corresponding actual measured value for said operating parameter; and
determining whether differences between said predicted and actual measured values for one or more of said predetermined number of operating parameters exceeds a configured statistical limit using Statistical Process Control (SPC) methods. - View Dependent Claims (27, 28, 29)
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Specification