US3924140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for monitoring and controlling industrial gas turbine power plants including facility for dynamic calibration control instrumentation
Assignee: Westinghouse Electric Corp
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Filing: 1972-03-14
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Granted: 1975-12-02
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Expires: 1992-03-14
Abstract
Abstract A gas turbine power plant having a hybrid digital computer control system is provided with an industrial gas turbine which drives a rotating brushless exciter generator coupled to a power system through a breaker. Control inputs representative of selected operating parameters are continuously available to provide highly responsive control over a broad range of gas turbine and generator operating conditions. Predictable errors are effectively eliminated by means of programmed computer operations to thereby ensure highly accurate control variable derivation essential to maintaining gas turbine operation at or near design limits while providing synchronized operation of turbine and generator.
Inventors
- 👤 Robert A Yannone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:36
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/04; H02P2101/00; H02P2101/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
207 words
A gas turbine electric power plant comprising: a. a gas turbine including compressor, combustion and turbine elements; b. a generator drivably coupled to said turbine for generating electric power; c. means for supplying fuel to said gas turbine combustion element; d. means for selectively coupling said generator to an external power system; e. means for controlling the operation of said plant including a computer and means for operating said computer to effect control action by said control means in a predetermined manner, said control means also including means for actuating said coupling means when a particular selected parameter of said actuating means reaches a predetermined value to effect coupling of said generator to the external power system; f. means, responsively coupled to said control means, for operating said fuel supply means to cause fuel to be supplied to said combustion element in controlled quantities, and g. detection means responsively connected to said actuating means, said coupling means and said control means for monitoring the actual value of said selected parameter at the time said coupling means is actuated and for generating one or more dynamic calibration signals representative of the difference between the predetermined and actual values of said selected parameter for use by said control means.
Claim 2
Dependent Claim
207 words
A gas turbine electric power plant comprising: a. a gas turbine including compressor, combustion and turbine elements; b. a generator drivably coupled to said turbine for generating electric power; c. means for supplying fuel to said gas turbine combustion element; d. means for selectively coupling said generator to an external power system; e. means for controlling the operation of said plant including a computer and means for operating said computer to effect control action by said control means in a predetermined manner, said control means also including means for actuating said coupling means when a particular selected parameter of said actuating means reaches a predetermined value to effect coupling of said generator to the external power system; f. means, responsively coupled to said control means, for operating said fuel supply means to cause fuel to be supplied to said combustion element in controlled quantities, and g. detection means responsively connected to said actuating means, said coupling means and said control means for monitoring the actual value of said selected parameter at the time said coupling means is actuated and for generating one or more dynamic calibration signals representative of the difference between the predetermined and actual values of said selected parameter for use by said control means.
Claim 3
Dependent Claim
60 words
An electric power plant as set forth in claim 1 which further includes means for generating a first time-based signal representative of the output of said generator and means for generating a second time-based signal representative of the external power system voltage, and wherein said detection means includes means for detecting phase angle differences between said first and second signals.
Claim 4
Dependent Claim
48 words
An electric power plant as set forth in claim 2 wherein a plurality of calibration values is provided by said detection means and said computer operaTing means further includes means for selecting, subject to a predetermined criterion, an optimal calibration value from among said plurality of calibration values.
Claim 5
Dependent Claim
19 words
An electric power plant as set forth in claim 3 wherein said criterion is related to time of selection.
Claim 6
Dependent Claim
39 words
An electric power plant as set forth in claim 3 wherein said computer operating means further includes means for determining a set of calibration values from among said plurality of calibration values upon which to impose said selection criterion.
Claim 7
Dependent Claim
24 words
An electric power plant as set forth in claim 3 wherein said criterion for selection is related to the occurrence of a predetermined event.
Claim 8
Dependent Claim
22 words
An electric power plant as set forth in claim 6 wherein said criterion for selection is the occurrence of a scheduled event.
Claim 9
Dependent Claim
27 words
An electric power plant as set forth in claim 3 wherein said criterion for selection is directly related to the magnitude of said plurality of calibration values.
Claim 10
Dependent Claim
27 words
An electric power plant as set forth in claim 5 wherein said criterion for selection is directly related to the magnitude of said plurality of calibration values.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |