Systems and methods for generating variable ramp rates for turbomachinery

Patent metadata

Field	Value
Publication number	US-2016195026-A1
Application number	US-201514590513-A
Country	US
Kind code	A1
Filing date	Jan 6, 2015
Priority date	Jan 6, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

A system includes a controller configured to receive one or more inputs associated with an operation of a turbine system, derive a set of ramp rates for the turbine system based at least in part on the one or more inputs, and to select a ramp rate from the set of ramp rates. The ramp rate includes a variable ramp rate. The controller is further configured to generate an output signal based on the selected ramp rate.

First claim

1 . A system, comprising:
a controller configured to:
receive one or more inputs associated with an operation of a turbine system;
derive a set of ramp rates for the a turbine system based at least in part on the one or more inputs;
select a ramp rate from the set of ramp rates, wherein the ramp rate comprises a variable ramp rate; and
generate an output signal based on the selected ramp rate.

2 . The system of claim 1 , wherein the controller is configured to receive a user input, a maximum possible ramp rate input, a physics-based model input of the operating parameters of the turbine system, an event detection input, a measured operational parameter input, a scheduling parameter input, or any combination thereof, as the one or more inputs.

3 . The system of claim 1 , wherein the controller is configured to:
receive a first physics-based model input of an operating parameter of the turbine system and a second physics-based model input of operating parameters of an industrial system comprising the turbine system; and derive the set of ramp rates for the turbine system by generating a model based control (MBC) model of each a plurality of tolerable ramp rates for the turbine system.

4 . The system of claim 1 , wherein the controller is configured to derive the set of ramp rates for the turbine system based on a ramp rate tolerability of each component of the turbine system.

5 . The system of claim 1 , wherein the controller is configured to select varying ramp rates from the set of ramp rates over an operational period of the turbine system.

6 . The system of claim 5 , wherein the controller is configured to select the varying ramp rates from the set of ramp rates over a loading or over a ramping period of the turbine system.

7 . The system of claim 1 , wherein the controller is configured to derive a set of respective maximum ramp rates for each component of the turbine system as the set of ramp rates.

8 . The system of claim 7 , wherein the controller is configured to select a lowest ramp rate from the set of respective maximum ramp rates for each component of the turbine system as the selected ramp rate.

9 . The system of claim 1 , wherein the turbine system comprises a gas turbine, a steam turbine, a generator, a compressor, or any combination thereof.

10 . The system of claim 1 , wherein the controller is configured to be programmably retrofitted with instructions to:
derive the set of ramp rates for the turbine system based on the one or more inputs; and select the ramp rate from the set of ramp rates.

11 . A non-transitory computer-readable medium having computer executable code stored thereon, the code comprising instructions to:
cause a controller to receive one or more inputs associated with an operation of a turbine system; cause the controller to derive a set of ramp rates for the turbine system based at least in part on the one or more inputs; cause the controller to select a ramp rate from the set of ramp rates, wherein the ramp rate comprises a variable ramp rate; and cause the controller to generate an output signal based on the selected ramp rate.

12 . The non-transitory computer-readable medium of claim 11 , wherein the code comprises instructions to cause the controller to receive a user input, a maximum possible ramp rate input, a physics-based model input of the operating parameters of the turbine system, an event detection input, a measured operational parameter input, a scheduling parameter input, or any combination thereof, as the one or more inputs.

13 . The non-transitory computer-readable medium of claim 11 , wherein the code comprises instructions to:
cause the controller to receive a physics-based model input of an operating parameter of the turbine system and a physics-based model input of operating parameters of an industrial system comprising the turbine system; and cause the controller to derive the set of ramp rates for the turbine system by generating a model based control (MBC) model of each a plurality of tolerable ramp rates for the turbine system.

14 . The non-transitory computer-readable medium of claim 11 , wherein the code comprises instructions to cause the controller to derive the set of ramp rates for the turbine system based on a ramp rate tolerable by each component of the turbine system.

15 . The non-transitory computer-readable medium of claim 11 , wherein the code comprises instructions to cause the controller to select varying ramp rates from the set of ramp rates over an operational period of the turbine system.

16 . The non-transitory computer-readable medium of claim 15 , wherein the code comprises instructions to cause the controller to select the varying ramp rates from the set of ramp rates over a loading or a ramping period of the turbine system.

17 . The non-transitory computer-readable medium of claim 11 , wherein the code comprises instructions to cause the controller to derive a set of respective maximum ramp rates for each component of the turbine system as the set of ramp rates.

18 . The non-transitory computer-readable medium of claim 17 , wherein the code comprises instructions to cause the controller to elect a lowest ramp rate from the set of respective maximum ramp rates for each component of the turbine system as the selected ramp rate.

19 . A system, comprising:
a gas turbine system; and a controller communicatively coupled to the gas turbine system, comprising:
a selector device configured to:
receive a plurality of inputs associated with an operation of the gas turbine system, wherein the plurality of inputs comprises a first set of model based operational parameters of the gas turbine system and a second set of sensed operational parameters of the gas turbine system;
derive a plurality of ramp rates for the gas turbine system based on the plurality of inputs, wherein the plurality of ramp rates comprises a respective maximum tolerable ramp rate for each component of the gas turbine system; and
select one or more ramp rates of the plurality of ramp rates; and

a ramp controller device configured to receive the selected one or more ramp rates and to generate an output signal based on the selected one or more ramp rates.

20 . The system of claim 19 , wherein the ramp controller device is configured generate a fuel flow command as the output signal, and wherein the fuel flow command is configured to activate an actuator to control a loading of the gas turbine system.

Assignees

• Gen Electric

Inventors

• Sopcic Paige Marie
• Seely William Forrester
• Fuller Jason Dean
• Waugh Daniel Richard

Classifications

• F02C9/28 Primary

  Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed (F02C9/30 - F02C9/38, F02C9/44 take precedence) · CPC title

• F02C3/04

  having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) · CPC title

• F05D2270/309

  Rate of change of parameters · CPC title