Process plant monitoring based on multivariate statistical analysis and on-line process simulation
First Claim
1. A system for on-line monitoring of operation of a process in a process plant having a process control system to control the process in connection with process measurements indicative of the operation of the process, the system comprising:
- a process simulation module to receive one or more process measurements and input at least one of the received process measurements into a model corresponding to one of a plurality of physical devices within the process plant, the model modeling the behavior of the physical device in the process, the simulation module using the model to simulate the operation of the process and generating model data indicative of a simulated representation of the operation of the process, the model data including data of an unmeasurable process parameter;
an analysis module to implement a multivariate statistical analysis of the operation of the process based on the model data and the process measurements;
one or more computer-readable media to store configurations of the process simulation module and the analysis module;
one or more computer-executable execution engines for implementation of the configurations of the process simulation module and the analysis module to enable the on-line monitoring of the process based on communications with the process control system during the operation of the process; and
a process graphic stored in the one or more computer-readable media for use by the one or more execution engines in generating a user interface having a graphic display of the plurality of physical devices modeled by the process simulation module, wherein the graphic display is configured to provide a plurality of display elements representative of current operating conditions of the plurality of physical devices in accordance with the multivariate statistical analysis.
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Accused Products
Abstract
Disclosed are systems and methods for on-line monitoring of operation of a process in connection with process measurements indicative of the operation of the process. In some cases, the operation of the process is simulated to generate model data indicative of a simulated representation of the operation of the process and based on the process measurements. A multivariate statistical analysis of the operation of the process is implemented based on the model data and the process measurements. The output data from the multivariate statistical analysis may then be evaluated during the operation of the process to enable the on-line monitoring of the process involving, for instance, fault detection via classification analysis of the output data.
116 Citations
22 Claims
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1. A system for on-line monitoring of operation of a process in a process plant having a process control system to control the process in connection with process measurements indicative of the operation of the process, the system comprising:
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a process simulation module to receive one or more process measurements and input at least one of the received process measurements into a model corresponding to one of a plurality of physical devices within the process plant, the model modeling the behavior of the physical device in the process, the simulation module using the model to simulate the operation of the process and generating model data indicative of a simulated representation of the operation of the process, the model data including data of an unmeasurable process parameter; an analysis module to implement a multivariate statistical analysis of the operation of the process based on the model data and the process measurements; one or more computer-readable media to store configurations of the process simulation module and the analysis module; one or more computer-executable execution engines for implementation of the configurations of the process simulation module and the analysis module to enable the on-line monitoring of the process based on communications with the process control system during the operation of the process; and a process graphic stored in the one or more computer-readable media for use by the one or more execution engines in generating a user interface having a graphic display of the plurality of physical devices modeled by the process simulation module, wherein the graphic display is configured to provide a plurality of display elements representative of current operating conditions of the plurality of physical devices in accordance with the multivariate statistical analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for on-line monitoring of operation of a process in connection with process measurements indicative of the operation of the process, the method comprising the steps of:
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receiving one or more process measurements; inputting at least one of the received process measurements into a simulation element corresponding to a process device operating in the process, the simulation element modeling the behavior of the process device operating in the process; using at least the simulation element to simulate the operation of the process, the simulation element generating model data indicative of a simulated representation of the operation of the process, based on the at least one of the received process measurements, and including data of an unmeasurable process parameter; implementing a multivariate statistical analysis of the operation of the process based on the model data and the received process measurements; evaluating output data from the multivariate statistical analysis during the operation of the process to enable the on-line monitoring of the process; and generating a user interface having a graphic display of the process, wherein the graphic display provides a plurality of display elements representative of current condition of the operation of the process in accordance with the multivariate statistical analysis, and further wherein the plurality of display elements includes a graphical representation of one or more of the process devices operating in the process. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification