Dynamic tuning of dynamic matrix control of steam temperature
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F22B-003/00
F22G-005/12
출원번호
US-0022237
(2011-02-07)
등록번호
US-9447963
(2016-09-20)
발명자
/ 주소
Beveridge, Robert A.
Whalen, Jr., Richard J.
출원인 / 주소
EMERSON PROCESS MANAGEMENT POWER & WATER SOLUTIONS, INC.
대리인 / 주소
Marshall, Gerstein & Borun LLP
인용정보
피인용 횟수 :
1인용 특허 :
123
초록▼
A technique of controlling a steam generating boiler system includes dynamically tuning a rate of change of a disturbance variable (DV) to control operation of a portion of the boiler system, and in particular, to control a temperature of output steam to a turbine. The rate of change of the DV is dy
A technique of controlling a steam generating boiler system includes dynamically tuning a rate of change of a disturbance variable (DV) to control operation of a portion of the boiler system, and in particular, to control a temperature of output steam to a turbine. The rate of change of the DV is dynamically tuned based on a magnitude of an error or difference between an actual and a desired level of an output parameter, e.g., output steam temperature. In an embodiment, as the magnitude of the error increases, the rate of change of the DV is increased according to a function f(x). A dynamic matrix control block uses the dynamically-tuned rate of change of the DV, a current output parameter level, and an output parameter setpoint as inputs to generate a control signal to control a field device that, at least in part, affects the output parameter level.
대표청구항▼
1. A method of dynamically tuning control of a steam generating boiler system, comprising: determining, by an error detector, a presence of an error corresponding to a temperature of output steam, wherein the output steam is generated by the steam generating boiler system for delivery to a turbine,
1. A method of dynamically tuning control of a steam generating boiler system, comprising: determining, by an error detector, a presence of an error corresponding to a temperature of output steam, wherein the output steam is generated by the steam generating boiler system for delivery to a turbine, and the determination of the presence of the error is based on a magnitude of a difference between a signal indicative of a measured temperature of the output steam received at the error detector and a signal indicative of a setpoint received at the error detector;providing, by an output of the error detector to a dynamic matrix controller of a control loop of the steam generating boiler system operating to control the temperature of the output steam, a signal corresponding to the error;receiving, at the dynamic matrix controller, (i) the signal corresponding to the error provided by the output of the error detector, (ii) a signal indicative of a rate of change of a disturbance variable generated by a device used in a portion of the steam generating boiler system, the portion of the steam generating boiler system excluding any devices included in the control loop, (iii) the signal indicative of the measured temperature of the output steam, and (iv) the signal indicative of the setpoint;adjusting, by the dynamic matrix controller based on the signal corresponding to the error, the signal indicative of the rate of change of the disturbance variable;generating, by the dynamic matrix controller, a control signal based on the adjusted signal indicative of the rate of change of the disturbance variable of the portion of the steam generating boiler system; andcontrolling, based on the control signal, a manipulated variable of the control loop of the steam generating boiler system to thereby control the temperature of the output steam. 2. The method of claim 1, wherein determining the presence of the error corresponding to the temperature of the output steam comprises detecting a difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam. 3. The method of claim 1, wherein adjusting the signal indicative of the rate of change of the disturbance variable based on the signal corresponding to the error comprises adjusting the signal indicative of the rate of change of the disturbance variable based on an aggressiveness of tuning determined based on the magnitude of the difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam. 4. The method of claim 3, wherein adjusting the signal indicative of the rate of change of the disturbance variable based on the aggressiveness of the tuning determined based on the magnitude of the difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam comprises increasing a magnitude of an adjustment to the signal indicative of the rate of change of the disturbance variable as the magnitude of the difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam increases. 5. The method of claim 4, wherein adjusting the signal indicative of the rate of change of the disturbance variable based on the aggressiveness of tuning based on the magnitude of the difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam further comprises decreasing the magnitude of the adjustment to the signal indicative of the rate of change of the disturbance variable as the magnitude of the difference between the signal indicative of the setpoint and the signal indicative of the measured temperature of the output steam decreases. 6. The method of claim 1, further comprising: providing the signal indicative of the rate of change of the disturbance variable to a first input of the dynamic matrix controller, andproviding the signal corresponding to the error to a second input of the dynamic matrix controller; andwherein adjusting the signal indicative of the rate of change of the disturbance variable is performed by the dynamic matrix controller based on the signals received at the first input and at the second input. 7. The method of claim 1, further comprising providing a signal indicative of a magnitude of the error to an input of a function block, modifying the signal indicative of the magnitude of the error using a function included in the function block, and generating an output of the function block based on the modified signal indicative of the magnitude of the error; andwherein adjusting the signal indicative of the rate of change of the disturbance variable based on the signal corresponding to the error comprises adjusting the signal indicative of the rate of change of the disturbance variable based on the output of the function block. 8. The method of claim 7, further comprising: providing the signal indicative of the rate of change of the disturbance variable to a first input of the dynamic matrix controller,providing a signal indicative of the output of the function block to a second input of the dynamic matrix controller; andwherein adjusting the signal indicative of the rate of change of the disturbance variable based on the output of the function block comprises adjusting, by the dynamic matrix controller, the signal indicative of the rate of change of the disturbance variable based on the signals received at the first input and at the second input of the dynamic matrix controller. 9. The method of claim 1, wherein: controlling, based on the control signal, the manipulated variable of the control loop of the steam generating boiler system to thereby control the temperature of the output steam comprises providing the control signal to a field device of the control loop of the steam generating boiler system; andthe field device corresponds to one of a plurality of sections of the steam generating boiler system, the plurality of sections including a furnace, a superheater section and a reheater section. 10. The method of claim 1, wherein adjusting the signal indicative of the rate of change of the disturbance variable of the portion of the steam generating boiler system includes adjusting respective values of respective signals indicative of respective rates of change of at least one of: a furnace burner tilt position; a steam flow; an amount of soot blowing; a damper position; a power setting; a fuel to air mixture ratio of a furnace of the steam generating boiler system; a firing rate of the furnace; a spray flow; a water wall steam temperature; a load signal corresponding to one of a target load or an actual load of the turbine; a flow temperature; a fuel to feed water ratio; the temperature of the output steam; a quantity of fuel; a type of fuel, another manipulated variable of the portion of the steam generating boiler system, or a control variable of the portion of the steam generating boiler system.
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Blevins, Terrence L.; Wojsznis, Wilhelm K., Adaptation of advanced process control blocks in response to variable process delay.
Wojsznis,Wilhelm K.; Blevins,Terrence L.; Nixon,Mark J.; Wojsznis,Peter, Adaptive multivariable process controller using model switching and attribute interpolation.
Harpster Joseph W. (Galena OH), Apparatus and method for measuring the air flow component and water vapor component of air/water vapor streams flowing u.
Martz Lyle F. (Verona PA) Plotnick Richard J. (Cherry Hill NJ), Combined cycle electric power plant and a heat recovery steam generator with improved fluid level control therefor.
Reed Terry J. (North Huntingdon PA) Smith Jack R. (Pittsburgh PA) Kiscaden Roy W. (Springfield PA 4), Combined cycle electric power plant having an improved digital/analog hybrid gas turbine control system.
Uram Robert (East Pittsburgh PA), Combined cycle electric power plant with a steam turbine having a sliding pressure main bypass and control valve system.
Heiser Richard S. (Greensburg Pittsburgh) Aanstad Ola J. (Greensburg PA), Combined cycle electric power plant with a steam turbine having a throttle pressure limiting control.
Uram Robert (East Pittsburgh PA) Marano Ross T. (Murrysville PA) Heiser Richard S. (Pittsburgh PA) Surh Jeong Y. (Pittsburgh PA), Combined cycle electric power plant with a steam turbine having an improved valve control system.
Kiscaden Roy W. (Springfield PA) Martz Lyle F. (Verona PA) Uram Robert (East Pittsburgh PA), Combined cycle electric power plant with coordinated plural feedback turbine control.
Lucas, John Michael; Webb, Arthur; Nixon, Mark J.; Jundt, Larry Oscar; Li, Jian; Stevenson, Dennis L.; Ott, Michael George; Koska, Herschel O.; Havekost, Robert Burke, Configuration system using security objects in a process plant.
Martz Lyle F. (Verona PA) Smith Jack R. (Pittsburgh PA) Lebonette Francis A. (Swarthmore PA) Putnam Robert A. (Elverson PA) Berman Paul A. (Plymouth Meeting PA), Control apparatus for controlling the operation of a gas turbine inlet guide vane assembly and heat recovery steam gener.
Reed Terry J. (North Huntingdon PA) Smith Jack R. (Pittsburgh PA), Control apparatus for modulating the inlet guide vanes of a gas turbine employed in a combined cycle electric power gene.
Giras Theodore C. (Pittsburgh PA) Mendez ; Jr. William E. (Murrysville PA) Smith Jack R. (Pittsburgh PA), Electric power plant having a multiple computer system for redundant control of turbine and steam generator operation.
Lucas, John Michael; Nixon, Mark J.; Zhou, Ling; Enver, Alper T.; Webb, Arthur, Graphics integration into a process configuration and control environment.
Martens Alan (Berwyn PA) Myers Gerald A. (Swarthmore PA) McCarty William L. (West Chester PA) Wescott Kermit R. (Kennett Square PA), Heat recovery steam generator outlet temperature control system for a combined cycle power plant.
Wojsznis, Wilhelm K.; Blevins, Terrence L.; Seeman, Richard C.; Nixon, Mark J., Integrated optimal model predictive control in a process control system.
Blevins,Terrence; Nixon,Mark; Lucas,Michael; Webb,Arthur; Beoughter,Ken, Integration of graphic display elements, process modules and control modules in process plants.
Nixon,Mark; Lucas,Michael; Webb,Arthur; Koska,Herschel; Li,Jian; Jundt,Larry; Stevenson,Dennis; Havekost,Robert; Ott,Michael, Module class objects in a process plant configuration system.
Blevins, Terrence L.; Wojsznis, Wilhelm K.; Nixon, Mark J.; Wojsznis, Peter, Multi-objective predictive process optimization with concurrent process simulation.
Blevins, Terrence L.; Chen, Deji; Nixon, Mark J.; McMillan, Gregory K., Non-periodic control communications in wireless and other process control systems.
Blevins, Terrence Lynn; Chen, Deji; Nixon, Mark J.; McMillan, Gregory K., Non-periodic control communications in wireless and other process control systems.
Srinivasan, Jagannathan Seenu, Over temperature and over power delta temperature operating margin recovery method and reactor system employing the same.
Blevins, Terrence L.; Nixon, Mark J.; McMillan, Gregory K., Process plant monitoring based on multivariate statistical analysis and on-line process simulation.
Blevins, Terrence Lynn; Nixon, Mark J.; McMillan, Gregory K., Process plant monitoring based on multivariate statistical analysis and on-line process simulation.
Blevins, Terrence L.; Beoughter, Ken J.; Lucas, J. Michael; Nixon, Mark J., Process plant user interface system having customized process graphic display layers in an integrated environment.
Lucas, J. Michael; Webb, Arthur; Nixon, Mark J.; Jundt, Larry O.; Li, Jian; Stevenson, Dennis L.; Ott, Michael G.; Koska, Herschel O.; Havekost, Robert B., Security for objects in a process plant configuration system.
Marcelle Kenneth A. W. (Schenectady NY) Chiang Kenneth H. (Schenectady NY) Houpt Paul K. (Schenectady NY) Bonissone Piero P. (Schenectady NY) Weiss Joseph (Cupertino CA), Steam turbine fuzzy logic cyclic control method and apparatus therefor.
Ronnen Uri G. (Monroeville PA) Lardi Francesco (Pittsburgh PA), Steam turbine power plant having improved testing method and system for turbine inlet valves associated with downstream.
Giras Theodore C. (Forest Hills PA) Birnbaum Manfred E. (Philadelphia PA), System and method for operating a steam turbine and an electric power generating plant.
Waldron Gerald E. (Pittsburgh PA), System and method for operating a steam turbine with capability for bumplessly changing the system configuration on-line.
Tanco Juan J. (Buenos Aires AR), System and method for operating a steam turbine with digital computer control having improved automatic startup control.
Braytenbah Andrew (Pennsauken NJ) Podolsky Leaman (Wilmington DE), System and method for operating a steam turbine with digital computer control having integrator limit.
Waldron Gerald E. (Pittsburgh PA) Braytenbah Andrew (Pennsauken NJ), System and method for operating a steam turbine with digital computer control having setpoint and valve position limitin.
Giras Theodore C. (Pittsburgh PA) Podolsky Leaman (Wilmington DE), System and method for operating a steam turbine with improved control information display.
Uram Robert (East Pittsburgh PA), System and method for operating a steam turbine with improved organization of logic and other functions in a sampled dat.
Braytenbah ; Andrew ; Podolsky ; Leaman, System and method for operating a steam turbine with protection provisions for a valve positioning contingency.
Uram Robert (East Pittsburgh PA) Giras Theodore C. (Pittsburgh PA), System and method for starting, synchronizing and operating a steam turbine with digital computer control.
Ronnen Uri G. (Monroeville PA) Podolsky Leaman B. (Wilmington DE) Giras Theodore C. (Pittsburgh PA), System and method for transferring the operation of a turbine-power plant between single and sequential modes of turbine.
Heiser Richard S. (Pittsburgh PA) Scott Anthony I. (Greesburg PA), System for operating a steam turbine with bumpless digital megawatt and impulse pressure control loop switching.
Uram Robert (East Pittsburgh PA) Tanco Juan J. (Buenos Aires ARX), Systems and method for organizing computer programs for operating a steam turbine with digital computer control.
Binstock Morton H. (Pittsburgh PA) Podolsky Leaman B. (Wilmington DE) McCloskey Thomas H. (Palo Alto CA), Turbine low pressure bypass spray valve control system and method.
Wojsznis Wilhelm K. (Round Rock TX), Variable horizon predictor for controlling dead time dominant processes, multivariable interactive processes, and proces.
Lucas, J. Michael; Webb, Arthur; Nixon, Mark J.; Jundt, Larry O.; Li, Jian; Stevenson, Dennis L.; Ott, Michael G.; Koska, Herschel O.; Havekost, Robert B., Version control for objects in a process plant configuration system.
Lucas, John Michael; Webb, Arthur; Nixon, Mark J.; Jundt, Larry Oscar; Li, Jian; Stevenson, Dennis L.; Ott, Michael George; Koska, Herschel O.; Havekost, Robert Burke, Version control for objects in a process plant configuration system.
Lucas,J. Michael; Webb,Arthur; Nixon,Mark J.; Jundt,Larry O.; Li,Jian; Stevenson,Dennis L.; Ott,Michael G.; Koska,Herschel O.; Havekost,Robert B., Version control for objects in a process plant configuration system.
Davis Guy E. (Martinez CA) Lardi Francesco (Pittsburgh PA) Ghrist ; III William D. (Washington PA 4), Wide load range system for transferring turbine or plant operation between computers in a multiple computer turbine and.
Jones Donald J. (Pittsburgh PA) Davis Guy E. (Martinez CA), Wide range system for transferring steam generator and turbine operation between computers in a multiple turbine compute.
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