US3911286A - System and method for operating a steam turbine with a control system having a turbine simulator - Google Patents

System and method for operating a steam turbine with a control system having a turbine simulator Download PDF

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US3911286A
US3911286A US396160A US39616073A US3911286A US 3911286 A US3911286 A US 3911286A US 396160 A US396160 A US 396160A US 39616073 A US39616073 A US 39616073A US 3911286 A US3911286 A US 3911286A
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turbine
generating
speed
load
set forth
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US396160A
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Robert Uram
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CBS Corp
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Westinghouse Electric Corp
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/08—Feeding or discharging cards
    • G06K13/0806—Feeding or discharging cards using an arrangement for ejection of an inserted card
    • G06K13/0825—Feeding or discharging cards using an arrangement for ejection of an inserted card the ejection arrangement being of the push-push kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
    • F01D17/24—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical electrical

Definitions

  • ABSTRACT [52] 290/40; 235/15121; 60/646;
  • a steam turbine is provided with an automatic digital 444/1 computer control and a backup analog control which IIII. f i i d and speed control loops during the [58] held of Search 235/5121 15134 1513 positioning of the turbine inlet valves for speed and 235/15 1; 415/17; 60/64 66; 290/40 load control.
  • An operator panel is provided with a test 40 F; 340/1725; 444/1 switch for transferring the turbine operation to backup I control and for connecting the automatic control to a [56]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

A steam turbine is provided with an automatic digital computer control and a backup analog control which function in load and speed control loops during the positioning of the turbine inlet valves for speed and load control. An operator panel is provided with a test switch for transferring the turbine operation to backup control and for connecting the automatic control to a turbine simulator stored in the computer when it is desired to use the on-line computer for training, checkout or maintenance without disturbing the power generation process.

Description

Uram
Oct. 7, 1975 SYSTEM AND METHOD FOR OPERATING A STEAM TURBINE WITH A CONTROL SYSTEM HAVING A TURBINE SIMULATOR OTHER PUBLICATIONS Application of the Prodac 50 System to Direct Digital 1 Inventors: RobertUram, East i b Pa. Control; .I. c. Belz, o. J. Kirk & P. s. Radcliffe, IEEE 1 Int]. Con Ree, Part 3, 1965, 102-122. [73] Assignee: Westinghouse Electric Corporation, pp
pimburgh Pa Momtormg and Automatic Control In Steam Power Stations by Process Computer, E. Doetsch & G. [22] Fil d p 1973 Hirschberg, Siemens Review XXXV (1968), No. 12, 1211 Appl. No.: 396,160 471-476 Primary ExaminerEugene G. Botz Related US Application Data Asszstant Exammer-Edward J. WIse A Attorney, Agent, or FIrmE. F. Possessky [63] ContInuatIon of Scr. No. 247,852, April 26, 1972,
abandoned.
[57] ABSTRACT [52] 290/40; 235/15121; 60/646; A steam turbine is provided with an automatic digital 444/1 computer control and a backup analog control which IIII. f i i d and speed control loops during the [58] held of Search 235/5121 15134 1513 positioning of the turbine inlet valves for speed and 235/15 1; 415/17; 60/64 66; 290/40 load control. An operator panel is provided with a test 40 F; 340/1725; 444/1 switch for transferring the turbine operation to backup I control and for connecting the automatic control to a [56] References C'ted turbine simulator stored in the computer when it is de- UNITED STATES PATENTS sired to use the on-line computer for training, check- 3,552,872 l/l971 Giras et al. 415/17 out or maintenance without disturbing the power gen- 3,555,251 [/1971 Shavit v. 235/151 eration process. 3,561,216 2/1971 Moore, Jr. 60/73 D 3,564,273 2 1971 Cockrcll 415/17 x 39 Clams, 35 Drawing Flgures o e POWER lMPULSE DETECTOR PRESSURE l9 DETECTOR STEAM LOAD GVI - 2 20 11+ Q 22 .4 l I I H.F. LP. L2 :3 lgfig flfi TURBINE TURBINE TURBINE GENERATOR 5151-5 SECTION SECTION SECTION eve l STEAM REHEATER sv lV CONDENSER l ass 1 L L29 J C55 ol ANALOG DIGITAL SPEED SPEED DETECTOR DETECTOR 52 HYDRgl/JLIC 58] 1.59 355% ACTUATOR POSITI N 12. CONTROLS 44 I HYDRAULIC HYDRAULIC GOVVERNOR ACTUIAYI'ORS 56 AcTuAT Rs 49 11/ 7 posmou HIGH PRESSURE CONTROLS HYDRAULIC FLUID SUPPLY Berry 415/17 X U. S. Pat ent Oct. 7,1975 Sheet2 of 28 3,911,286
U.S. Patent -0 ;t. 7,1975 Sheet-4 of 28 3,911,286
mm OE US. Patent Oct. 7,1975 Sheet 5 of 23 3,911,286
US. Patent Oct. 7,1975 Sheet 6 of 28 3,911,286
US. Patent Oct. 7,1975 Sheet 7 Of28 3,911,286
"26 PLANT gm 2 COMMANDER TASK L DATA TAS K LINK I852 INTERRUPT T T ERROR f SE%L\J/%NNCTES OF PANEL LAMPS INTERRUPT PROGRAM "58x VALVE L I852] INTERRUPT PLANT CCI 15 suBROuTINE REFERENCfl .854 III2 m0 H28 I r r sTATus xf af gu PANEL PANEL LOGIC LI mgs TASK TASKS I NTERRUPT CONTACTS I9IO OPERATOR S SPEED PANEL "56 SELECTION TURBINE BUTTONS PROGRAM 2022 TRIP "so DECODER INTERRUPT L|85O f Z5553 I??? #0 TASK I CHANNEL \-20I8 85%? ERROR INTERRUPT I LQCELLEE B2 l CONTROL VALVES 1 MONITOR AUXILIARY TASK sTOP SYNCHRONIZER L 1 INITIAL TASK 52 {I814 sPOLOOP TI PRE-sET r LOAD VALVE FLASH cONTROL POSITON ./|8l2 L TASK OLOsE Gv H36 Hi6 ANALOG SCAN BREAKER H41] TASK OPEN NTERRuPT ATS 34 I L vIsuAL BREAKER DISPLAY TASK II40- ATs PERIODCS CONTAiT1OLtJTPUTS TEST ATS H48 42/ ANALOG H TAS K CONVERSION ANALOG 1 ROUTINE DISPLAY DIGITAL 1/0 PR RAMM R MEssAGE F n44 WRITER CONSOLE TASK LOGGING TRENO TYPEWRITER RECORDER Sheet 11 of 28 3,911,286
U.S. Patent Oct. 7,1975
U.S. Pat ent 00. 7,1975 Sheet '17 of 22 3- 3,911,286
I24 /I I I0 SEQUENCE OF LOG: EVENTS TASK INTERRUPT PROGRAM CONTACT LOGIC mpuvs sures AUXILIARY 32 CONTROL MEL SYNCHRONIZER ANALOG OUTPUTS TASK EVERY TASK w,
sec Hi4 IOI2 ANALOG INPUTS ANALOG so: I
TASK Ans U.S. Pat ent 0m. 7,1975 Sheet 19 of 28 3,911,286
u h #OmuZOU vwdw 0-004 VNQI

Claims (39)

1. A turbine for an electric power generating system comprising: a turbine for driving a plant generator, means for controlling the flow of an energizing fluid to said turbine, means for automatically controlling said flow controlling means to control the turbine speed during and after startup, means for automatically controlling said flow controlling means to control the turbine load after the turbine reaches synchronous speed, said automatic controlling means including means for generating electric signals for said flow controlling means as a function of reference and feedback signals, means for controlling the operation of said flow controlling means in response to the electric signals and in turn the operating state of said turbine, means for generating at least one simulated response to predetermined outputs generated by said automatic controlling means, means for connecting said automatic controlling and said generating means to operate in a simulation mode including means for applying the simulated response to said automatic controlling means, and means for operating said backup control means to control said turbine when said automatic controlling means is placed in the simulation mode.
2. A turbine as set forth in claim 1 wherein the turbine is a steam turbine having inlet steam valves, said flow controlling means includes said valves, and said automatic controlling means provide position control over said valves.
3. A turbine as set forth in claim 2 wherein said simulated response generating means is included as a part of said automatic controlling means.
4. A turbine as set forth in claim 2 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
5. A control system as set forth in claim 4 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
6. A turbine as set forth in claim 2 wherein means are provided for generating a signal representing actual turbine speed, said automatic controlling means includes means for generating a speed demand as a function of a speed reference and the actual turbine speed, and said simulated response generating means includes meanS for generating a simulated turbine speed response as a function of the speed demand and for applying the simulated turbine speed response to speed demand generating means in place of the actual turbine speed when the simulation mode is selected.
7. A turbine as set forth in claim 6 wherein said simulated turbine speed response generating means includes a first order lag function generator to which the speed demand is applied.
8. A turbine as set forth in claim 6 wherein said automatic controlling means includes a digital computer, and computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
9. A turbine as set forth in claim 2 wherein means are provided for generating a signal representing actual turbine load, said automatic controlling means includes means for generating a load demand as a function of a load reference and the actual turbine load, and said simulated response generating means includes means for generating a simulated turbine load response as a function of the load demand and for applying a simulated turbine load response to load demand generating means in place of the actual turbine load when the simulation mode is selected.
10. A turbine as set forth in claim 9 wherein load demand is impulse pressure demand and the actual load is represented by impulse pressure.
11. A turbine as set forth in claim 9 wherein the load demand is an electrical load demand and the actual load is represented by an electrical load signal.
12. A turbine as set forth in claim 9 wherein said load demand generating means includes means for generating an electrical load demand as a function of an electrical load reference and actual electrical load and means for generating an impulse pressurue demand as a function of the electrical load demand and actual impulse pressure, said simulated response generating means includes an impulse pressure response generator and an electrical load response generator, and said electrical load and impulse pressure generators responding respectively to the electrcial load demand and the impulse pressure demand to generate respective simulated generator electrical load and turbine impulse pressure simulation responses for respective application to said electrical load and impulse pressure generators.
13. A turbine as set forth in claim 12 wherein said automatic controlling means includes a digital computer, and said backup control means is an analog control external to the computer.
14. A turbine as set forth in claim 9 wherein said simulated turbine speed response generating means includes a first order lag function generator to which the speed demand is applied.
15. A turbine as set forth in claim 9 wherein means are provided for generating a signal representing actual turbine speed, said automatic controlling means includes means for generating a speed demand as a function of a speed reference and the actual turbine speed, and said simulated response generating means includes means for generating a simulated turbine speed response as a function of the speed demand and for applying the simulated turbine speed response to speed demand generating means in place of the actual turbine speed when the simulation mode is selected.
16. A turbine as set forth in claim 15 wherein said automatic controlling means includes a digital computer, and said backup control means is an analog control external to the computer.
17. A turbine as set forth in claim 9 wherein said automatic controling means includes a digital computer, and said backup control means is an analog control external to the computer.
18. A turbine as set forth in claim 1 wherein an operator panel is provided with means for generating a simulation mode selection signal, means are provided for coupling said selection means to said automatic controlling means and said simulation response generating means.
19. A turbine as set forth in claim 18 wherein the turbine is a steam Turbine having inlet steam valves, said flow controlling means includes said valves, and said automatic controlling means provide position control over said valves.
20. A turbine as set forth in claim 18 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
21. A control system for a steam turbine having inlet steam valves, said control system comprising: means for controlling the flow of an energizing fluid to said turbine, means for automatically controlling said flow controlling means to control the turbine speed during and after startup, means for automatically controlling said flow controlling means to control the turbine load after the turbine reaches synchronous speed, said automatic controlling means including means for generating electric signals for said flow controlling means as a function of reference and feed back signals, means for controlling the operation of said flow controlling means in response to the electrical signals and in turn the operating state of said turbine, means for generating at least one simulated response to predetermined outputs generated by said automatic controlling means, means for connecting said automatic controlling and said generating means to operate in a simulation mode including means for appling the simulated response to said automatic means, and means for operating said backup control means to control said turbine when said automatic controlling means is placed in the simulation mode.
22. A control system as set forth in claim 21 wherein the turbine is a steam turbine having inlet steam valves, said flow controlling means includes said valves, and said automatic controlling means provide position control over said valves.
23. A control system as set forth in claim 22 wherein an operator panel is provided with means for generating a simulation mode selection signal, means are provided for coupling said selection means to said automatic controlling means and said simulation response generating means.
24. A turbine as set forth in claim 21 wherein means are provided for generating a signal representing actual turbine speed, said automatic controlling means includes means for generating a speed demand as a function of a speed reference and the actual turbine speed, and said simulated response generating means includes means for generating a simulated turbine speed response as a function of the speed demand and for applying the simulated turbine speed response to speed demand generating means in place of the actual turbine speed when the simulation mode is selected.
25. A control system as set forth in claim 24 wherein said simulated turbine speed response generating means includes a first order lag function generator to which the speed demand is applied.
26. A control system as set forth in claim 24 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
27. A control system as set forth in claim 24 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
28. A control system as set forth in claim 24 wherein an operator panel is provided with means for generating a simulation mode selection signal, means are provided for coupling said selection means to said automatic controlling means and said simulation response generating means, and said operator panel includes means for generating a speed reference signal and means for coupling the speed reference signal to said automatic controlling means during turbine startup.
29. A control system as set forth in claim 28 wherein means are provided for Automatically generating a speed reference during turbine startup, and said operator panel includes means for generating an automatic startup select signal which is applied to said automatic controlling means.
30. A control system as set forth in claim 28 wherein said operator panel includes means for generating a load reference signal and means for coupling the load reference signal to said automatic controlling means during the turbine load mode.
31. A control system as set forth in claim 21 wherein means are provided for generating a signal representing actual turbine load, said automatic controlling means includes means for generating a load demand as a function of a load reference and the actual turbine load, and said simulated response generating means includes means for generating a simulated turbine load response as a function of the load demand and for applying the simulated turbine load response to load demand generating means in place of the actual turbine load when the simulation mode is selected.
32. A control system as set forth in claim 31 wherein load demand is impulse pressure demand and the actual load is represented by impulse pressure.
33. A control system as set forth in claim 31 wherein the load demand is an electrical load demand and the actual load is represented by an electrical load signal.
34. A control system as set forth in claim 31 wherein said load demand generating means includes means for generating an electrical load demand as a function of an electrical load reference and actual electrical load and means for generating an impulse pressure demand as a function of the electrical load demand and actual impulse pressure, said simulated response generating means includes an impulse pressure response generator and an electrical load response generator, and said electrical load and impulse pressure generators responding respectively to the electrical load demand and the impulse pressure demand to generate respective simulated generator electrical load and turbine impulse pressure simulation responses for respective application to said electrical load and impulse pressure generators.
35. A control system as set forth in claim 34 wherein said automatic controlling means includes a digital computer, said computer incudes said simulated response generating means, and said backup control means is an analog control external to the computer.
36. A control system as set forth in claim 31 wherein said simulated turbine speed response generating means includes a first order lag function generator to which the speed demand is applied.
37. A control system as set forth in claim 31 wherein means are provided for generating a signal representing actual turbine speed, said automatic controlling means includes means for generating a speed demand as a function of a speed reference and the actual turbine speed, and said simulated response generating means includes means for generating a simulated turbine speed response as a function of the speed demand and for applying the simulated turbine speed response to speed demand generating means in place of the actual turbine speed when the simulation mode is selected.
38. A control system as set forth in claim 31 wherein said automatic controlling means includes a digital computer, said computer includes said simulated response generating means, and said backup control means is an analog control external to the computer.
39. A control system as set forth in claim 31 wherein an operator panel is provided with means for generating a simulation mode selection signal, means are provided for coupling said selection means to said automatic controlling means and said simulation response generating means, and said operator panel includes means for generating a load reference signal and means for coupling the load reference signal to said automatic controlling means during the turbine load mode.
US396160A 1972-04-26 1973-09-11 System and method for operating a steam turbine with a control system having a turbine simulator Expired - Lifetime US3911286A (en)

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029951A (en) * 1975-10-21 1977-06-14 Westinghouse Electric Corporation Turbine power plant automatic control system
FR2332563A1 (en) * 1975-11-21 1977-06-17 Gen Electric ENERGY GENERATOR CONTROL SYSTEM
US4096699A (en) * 1977-02-23 1978-06-27 Westinghouse Electric Corp. Auxiliary manual turbine controller
US4270055A (en) * 1972-11-15 1981-05-26 Westinghouse Electric Corp. System and method for transferring the operation of a turbine-power plant between single and sequential modes of turbine valve operation
US4490808A (en) * 1981-04-02 1984-12-25 Hydro Quebec Electronic simulator for the simulation of a hydro-turbine
US4794544A (en) * 1987-03-26 1988-12-27 Woodward Governor Company Method and apparatus for automatically index testing a kaplan turbine
US5621654A (en) * 1994-04-15 1997-04-15 Long Island Lighting Company System and method for economic dispatching of electrical power
US20020123870A1 (en) * 2000-12-27 2002-09-05 Jeffrey Chan Method and system for analyzing performance of a turbine
US20050102126A1 (en) * 2002-10-10 2005-05-12 Satoshi Tanaka Control logic simulation-verification method and simulation-verification personal computer
US20050285574A1 (en) * 2004-06-25 2005-12-29 Huff Frederick C Method and apparatus for providing economic analysis of power generation and distribution
US20070282588A1 (en) * 2006-05-31 2007-12-06 Powersmiths International, Inc. Electric power system training simulation software and process for electric power system training
US20120040299A1 (en) * 2010-08-16 2012-02-16 Emerson Process Management Power & Water Solutions, Inc. Dynamic matrix control of steam temperature with prevention of saturated steam entry into superheater
US20120130553A1 (en) * 2010-11-19 2012-05-24 General Electric Company Safety instrumented system (sis) for a turbine system
US20140209289A1 (en) * 2013-01-30 2014-07-31 Ge Oil & Gas Esp, Inc. Remote power solution
CN104074562A (en) * 2013-03-27 2014-10-01 株式会社日立制作所 Steam turbine power plant
US9163828B2 (en) 2011-10-31 2015-10-20 Emerson Process Management Power & Water Solutions, Inc. Model-based load demand control
US9335042B2 (en) 2010-08-16 2016-05-10 Emerson Process Management Power & Water Solutions, Inc. Steam temperature control using dynamic matrix control
US9447963B2 (en) 2010-08-16 2016-09-20 Emerson Process Management Power & Water Solutions, Inc. Dynamic tuning of dynamic matrix control of steam temperature
EP3876059A1 (en) * 2020-03-04 2021-09-08 General Electric Company Systems, program products, and methods for detecting thermal stability within gas turbine systems
US20220029454A1 (en) * 2020-07-22 2022-01-27 General Electric Company Control of power generation system during on-line maintenance using multiple maintenance modes

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US3552872A (en) * 1969-04-14 1971-01-05 Westinghouse Electric Corp Computer positioning control system with manual backup control especially adapted for operating steam turbine valves
US3555251A (en) * 1967-12-06 1971-01-12 Honeywell Inc Optimizing system for a plurality of temperature conditioning apparatuses
US3561216A (en) * 1969-03-19 1971-02-09 Gen Electric Thermal stress controlled loading of steam turbine-generators
US3564273A (en) * 1967-11-09 1971-02-16 Gen Electric Pulse width modulated control system with external feedback and mechanical memory
US3588265A (en) * 1968-04-19 1971-06-28 Westinghouse Electric Corp System and method for providing steam turbine operation with improved dynamics

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US3564273A (en) * 1967-11-09 1971-02-16 Gen Electric Pulse width modulated control system with external feedback and mechanical memory
US3555251A (en) * 1967-12-06 1971-01-12 Honeywell Inc Optimizing system for a plurality of temperature conditioning apparatuses
US3588265A (en) * 1968-04-19 1971-06-28 Westinghouse Electric Corp System and method for providing steam turbine operation with improved dynamics
US3561216A (en) * 1969-03-19 1971-02-09 Gen Electric Thermal stress controlled loading of steam turbine-generators
US3552872A (en) * 1969-04-14 1971-01-05 Westinghouse Electric Corp Computer positioning control system with manual backup control especially adapted for operating steam turbine valves

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270055A (en) * 1972-11-15 1981-05-26 Westinghouse Electric Corp. System and method for transferring the operation of a turbine-power plant between single and sequential modes of turbine valve operation
US4029951A (en) * 1975-10-21 1977-06-14 Westinghouse Electric Corporation Turbine power plant automatic control system
FR2332563A1 (en) * 1975-11-21 1977-06-17 Gen Electric ENERGY GENERATOR CONTROL SYSTEM
US4096699A (en) * 1977-02-23 1978-06-27 Westinghouse Electric Corp. Auxiliary manual turbine controller
US4490808A (en) * 1981-04-02 1984-12-25 Hydro Quebec Electronic simulator for the simulation of a hydro-turbine
US4794544A (en) * 1987-03-26 1988-12-27 Woodward Governor Company Method and apparatus for automatically index testing a kaplan turbine
US5621654A (en) * 1994-04-15 1997-04-15 Long Island Lighting Company System and method for economic dispatching of electrical power
US20020123870A1 (en) * 2000-12-27 2002-09-05 Jeffrey Chan Method and system for analyzing performance of a turbine
US7275025B2 (en) * 2000-12-27 2007-09-25 General Electric Company Method and system for analyzing performance of a turbine
US20050102126A1 (en) * 2002-10-10 2005-05-12 Satoshi Tanaka Control logic simulation-verification method and simulation-verification personal computer
US20050285574A1 (en) * 2004-06-25 2005-12-29 Huff Frederick C Method and apparatus for providing economic analysis of power generation and distribution
US7288921B2 (en) * 2004-06-25 2007-10-30 Emerson Process Management Power & Water Solutions, Inc. Method and apparatus for providing economic analysis of power generation and distribution
US7474080B2 (en) 2004-06-25 2009-01-06 Emerson Process Management Power & Water Solutions, Inc. Method and apparatus for providing economic analysis of power generation and distribution
US20080004721A1 (en) * 2004-06-25 2008-01-03 Emerson Process Management Power & Water Solutions, Inc. Method and Apparatus for Providing Economic Analysis of Power Generation and Distribution
US7385300B2 (en) 2004-06-25 2008-06-10 Emerson Process Management Power & Water Solutions, Inc. Method and apparatus for determining actual reactive capability curves
US8014992B2 (en) * 2006-05-31 2011-09-06 William H Smith Electric power system training simulation software and process for electric power system training
US20070282588A1 (en) * 2006-05-31 2007-12-06 Powersmiths International, Inc. Electric power system training simulation software and process for electric power system training
US9447963B2 (en) 2010-08-16 2016-09-20 Emerson Process Management Power & Water Solutions, Inc. Dynamic tuning of dynamic matrix control of steam temperature
US20120040299A1 (en) * 2010-08-16 2012-02-16 Emerson Process Management Power & Water Solutions, Inc. Dynamic matrix control of steam temperature with prevention of saturated steam entry into superheater
US9217565B2 (en) * 2010-08-16 2015-12-22 Emerson Process Management Power & Water Solutions, Inc. Dynamic matrix control of steam temperature with prevention of saturated steam entry into superheater
US9335042B2 (en) 2010-08-16 2016-05-10 Emerson Process Management Power & Water Solutions, Inc. Steam temperature control using dynamic matrix control
US20120130553A1 (en) * 2010-11-19 2012-05-24 General Electric Company Safety instrumented system (sis) for a turbine system
US8744634B2 (en) * 2010-11-19 2014-06-03 General Electric Company Safety instrumented system (SIS) for a turbine system
US10190766B2 (en) 2011-10-31 2019-01-29 Emerson Process Management Power & Water Solutions, Inc. Model-based load demand control
US9163828B2 (en) 2011-10-31 2015-10-20 Emerson Process Management Power & Water Solutions, Inc. Model-based load demand control
US20140209289A1 (en) * 2013-01-30 2014-07-31 Ge Oil & Gas Esp, Inc. Remote power solution
US9394770B2 (en) * 2013-01-30 2016-07-19 Ge Oil & Gas Esp, Inc. Remote power solution
CN104074562A (en) * 2013-03-27 2014-10-01 株式会社日立制作所 Steam turbine power plant
EP3876059A1 (en) * 2020-03-04 2021-09-08 General Electric Company Systems, program products, and methods for detecting thermal stability within gas turbine systems
US11585234B2 (en) 2020-03-04 2023-02-21 General Electric Company Systems, program products, and methods for detecting thermal stability within gas turbine systems
US20220029454A1 (en) * 2020-07-22 2022-01-27 General Electric Company Control of power generation system during on-line maintenance using multiple maintenance modes
US11489364B2 (en) * 2020-07-22 2022-11-01 General Electric Company Control of power generation system during online maintenance using multiple maintenance modes

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