Registers – Transfer mechanism – Traveling pawl
Patent
1973-12-21
1976-02-10
Gruber, Felix D.
Registers
Transfer mechanism
Traveling pawl
444 1, 290 40R, 415 17, F01d 1702, G05b 1500, G06f 1506
Patent
active
039379345
ABSTRACT:
A digital computer control system is provided for operating a steam turbine in an electric power plant. The computer develops steam valve position signals to control turbine speed and load. Various turbine temperature, pressure and other process parameter signals are coupled to the computer which stores the parameter values along with other parameters such as control loop setpoints in its memory. Another computer at the plant level or at the system dispatch level is coupled to the turbine computer through a data link which includes data link programs in each computer and data transmitter and receiver circuitry connected to the two computers. The higher level computer is the controlling computer on the data link. Control words are used to identify data transmission modes and validity checks are made on transmitted words. Turbine computer core data is accessible and transmittable to either higher level computer. Load demand and load rate are transmitted to the turbine computer from the dispatch computer, and the plant computer transmits setpoints to provide turbine control from the plant level. To check validity, a checksum quantity is generated with respect to predetermined data words at the transmission and receiver ends of the data link. The receiver compares the checksum quantities to validate linked data before such data is permitted to be used for turbine control or other purposes.
REFERENCES:
patent: 3552872 (1971-01-01), Giras et al.
patent: 3555251 (1971-01-01), Shavit
patent: 3561216 (1971-02-01), Moore, Jr.
patent: 3564273 (1971-02-01), Cockrell
patent: 3588265 (1971-06-01), Berry
application of the Prodac 50 System to Direct Digital Control, J. C. Belz, G. J. Kirk, P. S. Radcliffe, IEEE Intl. Conv. Rec. Part 3, 1965, pp. 102-122.
Monitoring and Automatic Control in Steam Power Stations by Process Computer, E. Doetsch & G. Hirschberg, Siemens Review XXXV (1968), No. 12, pp. 471-476.
Gruber Felix D.
Possessky E. F.
Westinghouse Electric Corporation
Wise Edward J.
LandOfFree
System and method for operating a steam turbine with digital con does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for operating a steam turbine with digital con, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for operating a steam turbine with digital con will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-151936