[특허]Combined cycle electric power plant having an improved digital/analog hybrid gas turbine control system

Combined cycle electric power plant having an improved digital/analog hybrid gas turbine control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-009/04
출원번호	US-0495726 (1974-08-08)
발명자 / 주소	Reed Terry J. (North Huntingdon PA) Smith Jack R. (Pittsburgh PA) Kiscaden Roy W. (Springfield PA 4)
출원인 / 주소	Westinghouse Electric Corp. (Pittsburgh PA 02)
인용정보	피인용 횟수 : 38 인용 특허 : 0

초록 ▼

A digital computer system provides automatic control for a steam turbine and two gas turbines in a combined cycle electric power plant during startup and load modes of operation. The gas turbine automatic control system provides speed, load and blade path temperature control functions in developing an output fuel control signal for application to each gas turbine fuel valve control. An analog control for each gas turbine selectively provides startup and temperature and load control functions as a backup for the automatic gas turbine control, and further provides gas turbine overspeed, surge and other limit controls continuously. An operator panel functions with the analog and digital controls to provide an operator interface with the plant, and an interface circuit ties the digital and analog controls together for bumpless transfer between manual and automatic modes of operation. A sequencer is provided for each gas turbine and it provides gas turbine startup sequence control, gas turbine trip protection and other functions in both the automatic and the backup modes of operation. A gas turbine monitor develops temperature and vibration signals for the sequencer and the fuel controls.

대표청구항 ▼

A combined cycle electric power plant comprising at least one gas turbine, means for generating steam in response to heat energy from said gas turbine, a steam turbine driven by steam supplied to it from said steam generating means, means for generating electric power under the driving power of said turbines, means for controlling the operation of said turbines and said steam generating means, said controlling means including a gas turbine control system having means for controlling the flow of fuel to said gas turbine, digital computer means for generating a fuel control signal during automatic gas turbine operation, a backup analog control for said gas turbine, means for transferring said controlling means between automatic and backup modes of operation, a digital/analog interface circuit for coupling said digital computer means for and said analog control to said fuel flow controlling means, said digital computer means including means for generating a speed control output and a megawatt load control output respectively during automatic speed and load modes of gas turbine operation, said digital computer means further including means for limiting the speed and load outputs to limit blade path temperature, means for generating the computer fuel control signal in response to said speed and load outputs, said analog control including a startup control which applies a fuel control signal to said interface circuit to control speed during startup and to control load during the load mode, a blade path temperature limit control coupled to the input of said interface circuit to hold or run back the fuel control signal output from said interface circuit for blade path temperature limiting and predetermined limit controls being connected between said gas turbine interface circuit and said fuel controlling means to limit the fuel control signal in both the automatic and manual gas turbine modes.

이 특허를 인용한 특허 (38)

Chandler, Christopher, Automated tuning of gas turbine combustion systems.
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Chandler, Christopher, Automated tuning of gas turbine combustion systems.
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Chandler, Christopher, Automated tuning of gas turbine combustion systems.
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Chandler, Christopher, Automated tuning of gas turbine combustion systems.
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Chandler, Christopher, Automated tuning of multiple fuel gas turbine combustion systems.
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McConnell, Robert W.; Trimble, Daniel W.; Lewis, David C., Automatic mode transitions for microturbine generating systems.
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Gainford, David Michael; Holt, Jonathan Edmund; Garner, Stephen Granville, Blade pitch control.
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Edelman Edward C., Command and control system and method for multiple turbogenerators.
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Edelman, Edward C., Command and control system for controlling operational sequencing of multiple turbogenerators using a selected control mode.
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Petzen, John, Control of steam temperature in combined cycle power plant.
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Jerye Bernhard,DEX ; Schwope Alfred,DEX, Control system for controlling the rotational speed of a turbine, and method for controlling the rotational speed of a.
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McManus Kirby L. (Redmond WA) McManus Paul J. (Seattle WA), Control system for electric power plant.
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Gainford, David Michael; Holt, Jonathan Edmund, Controlling propeller rotor overspeed.
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Beveridge, Robert Allen; Whalen, Jr., Richard J., Dynamic matrix control of steam temperature with prevention of saturated steam entry into superheater.
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Beveridge, Robert A.; Whalen, Jr., Richard J., Dynamic tuning of dynamic matrix control of steam temperature.
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Smithe, Alan Roger; Miller, Mackenzie Brooke; Dirkse, Philip J; Shortlidge, Seth, Feedwater heating hybrid power generation.
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Smithe, Alan Roger; Miller, Mackenzie Brooke; Dirkse, Philip J; Shortlidge, Seth, Feedwater heating hybrid power generation.
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Crom, Elden, Gas turbine engine overspeed prevention.
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Wehmeier, Eric J., Gas turbine engine with variable area fan nozzle positioned for starting.
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Gaffney, Peter; Hills, Christopher, Gas turbine sequencing method and system.
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Shortlidge, Seth; Cahill, Gregory J., Hybrid biomass process with reheat cycle.
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Dooley, Kevin Allan, Hybrid control system.
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Shortlidge, Seth; Cahill, Gregory J., Hybrid power generation cycle systems and methods.
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Yuri, Nobuyuki, Method and apparatus for controlling cogeneration system.
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Jerye Bernhard,DEX ; Schwope Alfred,DEX, Method for controlling the rotational speed of a turbine during load shedding.
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Certain, Bernard, Method for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration.
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Zhang, Daili; West, James Anthony, Model based control tuning process for gas turbines.
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Beveridge, Robert Allen, Model-based load demand control.
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Beveridge, Robert Allen, Model-based load demand control.
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Murphy Robert E. (Boise ID), Multiple fixed hydraulic geometry turbine control system.
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Chandler, Christopher, Optimization of gas turbine combustion systems low load performance on simple cycle and heat recovery steam generator applications.
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Ganev, Evgeni; Johnson, Edward L.; Nguyen, Cuong V., Overspeed protection for sensorless electric drives.
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Arita Setsuo,JPX ; Ito Tetsuo,JPX ; Ohga Yukiharu,JPX ; Murata Fumio,JPX ; Higashikawa Yuichi,JPX ; Sato Hideyuki,JPX ; Kudo Mitsuru,JPX ; Yamasawa Yuuzi,JPX, Plant operating and monitoring apparatus.
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Arita Setsuo,JPX ; Ito Tetsuo,JPX ; Ohga Yukiharu,JPX ; Murata Fumio,JPX ; Higashikawa Yuichi,JPX ; Sato Hideyuki,JPX ; Kudo Mitsuru,JPX ; Yamasawa Yuuzi,JPX, Plant operating and monitoring apparatus.
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Brnnstrm Roine (Finspong SEX), Power plant with a gas turbine for operation of a generator.
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Boot, John Christopher; Szudajski, Thomas Giles; Ross, Benjamin Earl, Remote power solution.
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Beveridge, Robert A.; Whalen, Jr., Richard J., Steam temperature control using dynamic matrix control.
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Yoshida, Yasuhiro; Yoshida, Takuya; Yashiki, Tatsuro; Nomura, Kenichiro; Yamanaka, Kazunori; Tomizawa, Masaaki; Takahashi, Yuichi; Suzuki, Fumiyuki, Steam turbine power plant.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Combined cycle electric power plant having an improved digital/analog hybrid gas turbine control system 원문보기

초록 ▼

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Combined cycle electric power plant having an improved digital/analog hybrid gas turbine control system 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (38)

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