EMERSON PROCESS MANAGEMENT POWER & WATER SOLUTIONS, INC.
대리인 / 주소
Marshall, Gerstein & Borun LLP
인용정보
피인용 횟수 :
0인용 특허 :
127
초록▼
Embodiments of methods and systems for controlling a load generated by a power generating system may include controlling at least a portion of the system using model-based control techniques. The model-based control techniques may include a dynamic matrix controller (DMC) that receives a load demand
Embodiments of methods and systems for controlling a load generated by a power generating system may include controlling at least a portion of the system using model-based control techniques. The model-based control techniques may include a dynamic matrix controller (DMC) that receives a load demand and a process variable as inputs and generates a control signal based on the inputs and a stored model. The model may be configured based on parametric testing, and may be modifiable. Other inputs may also be used to determine the control signal. In an embodiment, a turbine is controlled by a first DMC and a boiler is controlled by a second DMC, and the control signals generated by the first and the second DMCs are used in conjunction to control the generated load. Techniques to move the power generating system from Proportional-Integral-Derivative based control to model-based control are also disclosed.
대표청구항▼
1. A method of controlling a load generated by a power generating system, comprising: receiving, at inputs of a first dynamic matrix controller, a signal indicative of a current value of a first process variable used in a first section of the power generating system and a signal indicative of a targ
1. A method of controlling a load generated by a power generating system, comprising: receiving, at inputs of a first dynamic matrix controller, a signal indicative of a current value of a first process variable used in a first section of the power generating system and a signal indicative of a target load demand, the first section of the power generating system corresponding to one of a turbine or a boiler;determining, by the first dynamic matrix controller, a value of a first control signal by inputting a value of the target load demand and the current value of the first process variable into a model stored in a memory of the first dynamic matrix controller, the model being descriptive of a behavior of a process response at various values of load demands;generating, by the first dynamic matrix controller, the first control signal; andcontrolling the load generated by the power generating system based on the first control signal and a second control signal generated by a second dynamic matrix controller based on a current value of a second process variable used in a second section of the power generating system and the target load demand, the second section of the power generating system corresponding to the other one of the turbine or the boiler. 2. The method of claim 1: further comprising receiving a signal indicative of a setpoint of the first process variable used in the first section of the power generating system; andwherein determining the value of the first control signal is further based on the signal indicative of the setpoint of the first process variable. 3. The method of claim 2, wherein the method further comprises:receiving the signal indicative of the target load demand, a signal indicative of a setpoint of the second process variable corresponding to the second section of the power generating system, and a signal indicative of the current value of the second process variable at inputs of the second dynamic matrix controller;determining, by the second dynamic matrix controller, a value of the second control signal by inputting the value of the target load demand into a second model stored in a memory of the second dynamic matrix controller, and by using the signal indicative of the setpoint of the second process variable, the signal indicative of the current value of the second process variable, and the second model; andgenerating, by the second dynamic matrix controller, the second control signal. 4. The method of claim 1, wherein one of the first process variable or the second process variable corresponds to a throttle pressure within the power generating system, and the other one of the first process variable or the second process variable corresponds to an amount of fuel delivered to the power generating system. 5. The method of claim 2, wherein determining the value of the first control signal is further based on an additional signal that is indicative of a current value of a disturbance variable and that is received at a respective input of the first dynamic matrix controller. 6. The method of claim 5, wherein determining the value of the first control signal based on the additional signal indicative of the current value of the disturbance variable comprises determining the value of the first control signal based on a signal indicative of at least one of: an amount of soot, a steam temperature, or an amount of burner tilt. 7. The method of claim 1, further comprising: determining at least a portion of a configuration of the model based on parametric testing of at least a part of the power generating system; andstoring the model in the memory of the first dynamic matrix controller. 8. A method of controlling a load of a power generating system, comprising: receiving, at a first dynamic matrix controller, a signal indicative of a current value of a first variable and a signal indicative of a desired value of the first variable, the first variable corresponding to one of a turbine or a boiler of the power generating system;receiving, at a second dynamic matrix controller, a signal indicative of a current value of a second variable and a signal indicative of a desired value of the second variable, the second variable corresponding to the other one of the turbine or the boiler of the power generating system;generating, by the first dynamic matrix controller, a first control signal based on a target load demand, the signal indicative of current value of the first variable, the signal indicative of the desired value of the first variable, and a first model stored in a memory of the first dynamic matrix controller, the first model being descriptive of a behavior of a process response at various values of load demands;generating, by the second dynamic matrix controller, a second control signal based on the target load demand, the signal indicative of the current value of the second variable, the signal indicative of the desired value of the second variable, and a second model stored in a memory of the second dynamic matrix controller; andcontrolling the load of the power generating system based on the first control signal and on the second control signal. 9. The method of claim 8, wherein controlling the load of the power generating system based on the first control signal and on the second control signal comprises: controlling one of a throttle pressure within the power generating system or an amount of fuel delivered to the power generating system based on the first control signal, andcontrolling the other one of the throttle pressure within the power generating system or the amount of fuel delivered to the power generating system based on the second control signal. 10. The method of claim 8, further comprising initiating a cessation of a PID (Proportional-Integral-Derivative) control routine within the power generating system, wherein the PID control routine is based on the first variable; andwherein generating, by the first dynamic matrix controller, the first control signal based on the first variable occurs after the cessation of the PID control routine based on the first variable has been initiated. 11. The method of claim 8, wherein the first variable is a first process variable, the second variable is a second process variable, and at least one of: generating the first control signal is further based on a signal indicative of a current value of a first disturbance variable received at the first dynamic matrix controller;generating the first control signal is further based on a signal indicative of a current value of a first manipulated variable received at the first dynamic matrix controller;generating the second control signal is further based on a signal indicative of a current value of a second disturbance variable received at the second dynamic matrix controller; orgenerating the second control signal is further based on a signal indicative of a current value of a second manipulated variable received at the second dynamic matrix controller. 12. A power generating system, comprising: a first dynamic matrix controller including:respective inputs to receive a signal indicative of a target load demand for the power generating system and a signal indicative of a current value of a first process variable used in one of a turbine or a boiler of the power generating system,a memory storing a first model, wherein the first model is descriptive of a behavior of a process response at various values of load demands,a first dynamic matrix control routine configured to determine a value of a first control signal based on the first model, the current value of the first process variable, and a value of the target load demand, andan output to provide the first control signal to control a load generated by the power generating system; anda second dynamic matrix controller including:respective inputs to receive the signal indicative of the target load demand for the power generating system and a signal indicative of a current value of a second process variable used in the other one of the turbine or the boiler of the power generating system,a memory storing a second model,a second dynamic matrix control routine configured to determine a value of a second control signal based on the second model, the current value of the second process variable, and the value of the target load demand, andan output to provide the second control signal to control the load generated by the power generating system in conjunction with the first control signal. 13. The power generating system of claim 12, wherein: the first dynamic matrix controller further includes a respective input to receive a desired value of the first process variable; andthe first dynamic matrix control routine is configured to determine the value of the first control signal based on the first model, the value of the target load demand, the current value of the first process variable, and the desired value of the first process variable. 14. The power generating system of claim 13, wherein the first dynamic matrix control routine is configured to determine the value of the first control signal based on the first model, the value of the target load demand, the current value of the first process variable, the desired value of the first process variable, and a current value of a disturbance variable used in the power generating system. 15. The power generating system of claim 14, wherein the current value of the disturbance variable corresponds to at least one of: an amount of soot blowing, a steam temperature, or an amount of burner tilt. 16. The power generating system of claim 13, wherein: the second dynamic matrix controller further includes:a respective input to receive a signal indicative of a desired value of the second process variable, andthe second dynamic matrix control routine is configured to determine the value of the second control signal based on the second model, the value of the target load demand, the current value of the second process variable, and the desired value of the second process variable. 17. The power generating system of claim 12, wherein the first dynamic matrix controller and the second dynamic matrix controller are sequentially activated. 18. The power generating system of claim 12, wherein the first model stored in the memory of the first dynamic matrix controller is modifiable in real-time.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (127)
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.
Beveridge, Robert Allen; Whalen, Jr., Richard J., Dynamic matrix control of steam temperature with prevention of saturated steam entry into superheater.
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.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.