Wide range system for transferring steam generator and turbine operation between computers in a multiple turbine computer control system
US4057715A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1973 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Nov 6, 1993 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01K13/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric power plant including a steam generator and a steam turbine is operated by a control system including two redundant digital computers. Switching circuitry is provided for coupling one of the computers through interface equipment to the steam generator and the turbine and a generator according to programmed computer control. A data link is established between the computers to transfer manual/automatic status and other needed data from the control computer to the standby computer. A system is provided for detecting when certain hardware and software malfunctions have occurred and for responsively transferring control to the standby computer. The standby computer is tracked to the control computer so that control computer transfer can be made reliably without disturbing the electric power generation process. The turbine control includes a speed control loop which is implemented with computer operations. Startup control is also implemented in startup control loops for the steam generator by means of computer operations. Computer transfers are executed smoothly in the startup control mode at substantially any stage of the startup process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.