Methods and systems for modeling turbine operation

• US 8,639,480 B2
• Filed: 09/20/2010
• Issued: 01/28/2014
• Est. Priority Date: 09/20/2010
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Arnold, Robert Walter, Long, Christopher Eugene, Mosley, Matthew John, Ewens, David Spencer
• Primary Examiner(s): PHAN, THAI Q
• Application Number:
  US12/886,120
• Publication Number:
  US 20120072194A1
• Time in Patent Office: 1,226 Days
• Field of Search: 703/2, 703/6, 428/469, 415/118
• US Class Current: 703/2
• CPC Class Codes: F02C 7/057 Control or regulation conjointly with fuel supply control F02C9/50, with nozzle area control F02K1/16
• CPC Class Codes: F02C 9/00 Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants controlling air intakes F02C7/057; controlling turbines F01D; controlling compressors F04D27/00; controlling in general G05
• CPC Class Codes: F02C 9/28 Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed F02C9/30 - F02C9/38, F02C9/44 take precedence
• CPC Class Codes: F02C 9/42 specially adapted for the control of two or more plants simultaneously
• CPC Class Codes: F05D 2260/81 Modelling or simulation
• CPC Class Codes: F05D 2270/01 Purpose of the control system
• CPC Class Codes: F05D 2270/44 active, predictive, or anticipative

Abstract

Methods and systems for modeling turbine operation are disclosed. In one embodiment a method for modeling turbine operation may include: determining current performance parameters of a turbine; providing at least one external factor for current or future operation of the turbine; and modeling, by a predictive model, at least one operating characteristic of the turbine based at least in part on the current performance parameters of the turbine and the at least one external factor.

Claims

1. A method for modeling turbine operation, comprising:

determining current performance parameters of a turbine, wherein the current performance parameters are provided to a predictive model;

providing at least one external factor for current or future operation of the turbine; and

modeling, by the predictive model, at least one operating characteristic of the turbine based at least in part on the current performance parameters of the turbine and the at least one external factor.

2. The method of claim 1, wherein determining the current performance parameters of the turbine comprises modeling, by a primary model, the current performance parameters of the turbine.

3. The method of claim 2, wherein the predictive model is based at least in part on at least one output from the primary model.

4. The method of claim 1, wherein the at least one external factor comprises at least one of:

(a) ambient temperature;

(b) ambient pressure;

(c) ambient humidity;

or (d) fuel composition.

5. The method of claim 1, wherein modeling the current performance parameters of the turbine comprises modeling at least one of:

(a) a condition associated with turbine degradation;

or (b) a condition associated with turbine efficiency.

6. The method of claim 1, wherein modeling the at least one operating characteristic comprises modeling at least one of:

(a) turbine output;

(b) exhaust temperature;

(c) heat rate;

(d) fuel consumption;

or (e) emissions data for a supplied operating point and based at least in part on the modeled performance parameter of the turbine and the at least one external factor.

7. The method of claim 1, wherein the at least one external factor comprises at least one external factor during the current operation of the turbine, wherein determining the at least one operating characteristic comprises determining at least one operating characteristic for the current operation of the turbine, and further comprising:

adjusting operation of the turbine based on the at least one operating characteristic for the current operation of the turbine, wherein the adjusting is provided via automation or by one or more operator supplied commands to adjust at least one operating point.

8. The method of claim 1, further comprising:

determining a desired turbine operating point different from the current operation of the turbine; and

determining, based on the at least one operating characteristic of the turbine, that the current operation of the turbine does not satisfy the desired turbine operating point;

wherein the desired turbine operating point is dependent on the at least one modeled operating characteristic of the turbine.

9. The method of claim 8, wherein the desired turbine operating point comprises one of:

(a) a fraction of a base load output capability;

(b) a turndown point;

or (c) a peak fire point.

10. The method of claim 1, wherein providing the at least one external factor comprises providing at least one external factor for future operation of the turbine, wherein modeling the at least one operating characteristic of the turbine comprises modeling a future operating characteristic of the turbine based at least in part on the at least one external factor for future operation of the turbine, and further comprising:

outputting the at least one operating characteristic for future operation.

11. The method of claim 10, further comprising:

receiving the at least one external factor for future operation of the turbine as an operator supplied command via a human machine interface.

12. The method of claim 10, wherein determining the performance parameters of the turbine further comprises:

receiving one or more operator supplied performance parameters.

13. A system for modeling turbine operation, comprising:

at least one controller in communication with a turbine configured to;

determine current performance parameters of the turbine, wherein the current performance parameters are provided to a predictive model;

provide at least one external factor for current or future operation of the turbine; and

model, by the predictive model, at least one operating characteristic of the turbine based at least in part on the modeled current performance parameters of the turbine and the at least one external factor.

14. The system of claim 13, wherein the at least one controller is further configured to model, by a primary model, the current performance parameters of the turbine.

15. The system of claim 14, wherein the predictive model is based at least in part on at least one performance parameter modeled by the primary model.

16. The system of claim 13, wherein the at least one controller is further configured to adjust operation of the turbine based on the at least one operating characteristic modeled by the predictive model.

17. The system of claim 13, further comprising a human machine interface, wherein the at least one controller is further configured to present to the human machine interface the at least one operating characteristic.

18. The system of claim 17, wherein the human machine interface is further configured to receive one or more operator supplied commands, and wherein the predictive model is based at least in part on the one or more operator supplied commands.

19. A method for modeling a turbine, comprising:

receiving a plurality of operating parameters associated with the current operation of the turbine, wherein the plurality of operating parameters are provided to a primary model;

modeling, by the primary model, current performance parameters of the turbine based at least in part on the plurality of operating parameters;

receiving a determination of at least one external factor;

providing, as inputs to a predictive model, one or more outputs of the primary model and the at least one external factor, wherein the one or more outputs reflect the current operating state of the turbine; and

modeling, by the predictive model, at least one operating characteristic of the turbine, wherein the at least one operating characteristic of the turbine is based at least in part on the current operating state of the turbine and the at least one external factor.

20. The method of claim 19, wherein the at least one external factor comprises one of:

(a) a representation of at least one current external factor;

or (b) a representation of at least one future external factor; and

wherein;

if the at least one external factor represents at least one current external factor, the at least one operating characteristic represents at least one current operating characteristic of the turbine; and

if the at least one external factor represents at least one future external factor, the at least one operating characteristic represents at least one future operating characteristic of the turbine.