1
Baker Jack M, Dimitroff Vladimir T, Mizen Lawrence R, Gray Russell A: Combined steam turbine and gas turbine power plant control system. General Electric Company, Ahern John F, Mitchell James W, April 22, 1975: US3879616 (71 worldwide citation)

A combined cycle power plant has a number of gas turbines each feeding exhaust gas to an associated heat recovery steam generator to generate steam which is supplied to a common header. Provision can also be made for supplementary firing of the heat recovery steam generator to produce additional ste ...


2
Robert A Yannone, Terry J Reed: System and method for monitoring and controlling operation of industrial gas turbine apparatus and gas turbine electric power plants preferably with a digital computer control system. Westinghouse Electric, E F Possessky, August 11, 1981: US04283634 (66 worldwide citation)

A hybrid digital computer gas turbine power plant control system which may operate in a multiple control loop arrangement is provided with selected process variable monitoring and control and turbine system failure detection means. More specifically, open, shorted, grounded and reversed thermocouple ...


3
Akira Sugano, Eiji Tooyama: Hierarchical-structure plant control system. Hitachi, Craig and Antonelli, August 31, 1982: US04347564 (66 worldwide citation)

Sub-loop controllers arranged around a microprocessor are assigned to operation terminals to be controlled, and connected to a master controller and a host computer through a system bus to be supplied with a control command therefrom. Analog memories for manual control of the operation terminals are ...


4
Norihiko Sugimoto, Nobuhiro Hamada, Ikuro Masuda, Jinichi Sakurai: Plant control system. Hitachi, Antonelli Terry & Wands, February 19, 1985: US04500951 (50 worldwide citation)

In a plant control system, a transmission channel includes loop transmission lines arranged in duplex. Equivalently connected to this transmission channel are a plurality of one-loop controller stations, a backup station backing up a disabled one of the plural controller stations and a display stati ...


5
Ravinder M Bansal, Amand J Hahn: Apparatus for providing a universal interface in a process control system. Honeywell, A A Sapelli, W Udseth, A Medved, September 8, 1992: US05146401 (43 worldwide citation)

A plant control system includes a plant control network for performing the overall supervision of a process being controlled. The plant control network has at least one external bus for operatively connecting a corresponding interface apparatus to the plant control network. Further, each interface a ...


6
Minoru Choka: Plant control system including plant operation simulator. Kabushiki Kaisha Toshiba, Foley & Lardner Schwartz Jeffery Schwaab Mack Blumenthal & Evans, June 19, 1990: US04935886 (28 worldwide citation)

A plant control system having a plant operation simulator, including an actual plant operation control system and a controller for controlling a simulation of a plant operation in a state that at least a partial function of the actual plant operation control system is off-line. The plant operation c ...


7
Rankin Gerald L: Industrial gas turbine power plant control system and method implementing improved dual fuel scheduling algorithm permitting automatic fuel transfer under load. Westinghouse Electric Corporation, Seinberg, April 1, 1975: US3875380 (26 worldwide citation)

A gas turbine power plant is provided with an industrial gas turbine capable of sustained operation on either gas or liquid fuel, or a mixture of the two. One or more of such turbine-generator plants are operated by a hybrid digital computer control system during all turbine operating modes. Improve ...


8
Kazunori Ohmori, Kensuke Kawai: System for determining abnormal plant operation based on whiteness indexes. Kabushiki Kaisha Toshiba, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, December 16, 1986: US04630189 (25 worldwide citation)

In a method and a system for diagnosing a thermal power plant system including a thermal power plant, provided with an automatic power plant control system performing PID control, and a direct digital control system utilizing a control model representing the combination of the plant and the automati ...


9
Reed Terry J, Reuther John F: Digital computer control system and method for monitoring and controlling operation of industrial gas turbine apparatus employing expanded parametric control algorithm. Westinghouse Electric Corporation, Seinberg, February 11, 1975: US3866109 (25 worldwide citation)

A hybrid digital computer gas turbine power plant control system which may operate in a multiple control loop arrangement is provided with a plurality of process sensors at various operating cycle positions. Derivative inputs provide a basis for responsive control system variation of gas turbine par ...


10
Toru Eguchi, Akihiro Yamada, Naohiro Kusumi, Takaaki Sekiai, Masayuki Fukai, Satoru Shimizu: Plant control system and thermal power generation plant control system. Hitachi, Mattingly & Malur PC, July 3, 2012: US08214062 (24 worldwide citation)

The plant control system has a measurement signal data database, a model to estimate the value of measurement signal data used at a time when an operation signal is given to the plant, and an operation signal learning unit to learn a method of generating a model input, which is equivalent to an oper ...