Method and system to estimate variables in an integrated gasification combined cycle (IGCC) plant
Patent
·
OSTI ID:1093373
System and method to estimate variables in an integrated gasification combined cycle (IGCC) plant are provided. The system includes a sensor suite to measure respective plant input and output variables. An extended Kalman filter (EKF) receives sensed plant input variables and includes a dynamic model to generate a plurality of plant state estimates and a covariance matrix for the state estimates. A preemptive-constraining processor is configured to preemptively constrain the state estimates and covariance matrix to be free of constraint violations. A measurement-correction processor may be configured to correct constrained state estimates and a constrained covariance matrix based on processing of sensed plant output variables. The measurement-correction processor is coupled to update the dynamic model with corrected state estimates and a corrected covariance matrix. The updated dynamic model may be configured to estimate values for at least one plant variable not originally sensed by the sensor suite.
- Research Organization:
- General Electric Company (Niskayuna, NY)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-07NT43094
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Number(s):
- 8,538,561
- Application Number:
- 13/053,690
- OSTI ID:
- 1093373
- Country of Publication:
- United States
- Language:
- English
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