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Dedicated microcomputer-based control system for steam turbine-generators

  • US 4,280,060 A
  • Filed: 06/09/1980
  • Issued: 07/21/1981
  • Est. Priority Date: 06/09/1980
  • Status: Expired due to Term
First Claim
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1. In combination with a turbine-generator set having a feedback control system operative in a manual mode and in a remote supervisory mode for operational control of said turbine-generator, a supervisory control system for providing direction to the feedback control system whereby the turbine-generator is controlled through all phases of operation to provide the quickest turbine-generator response without exceeding allowable levels of thermal or mechanical stress, said supervisory controller comprising:

  • an analog interface subsystem for receiving from said turbine-generator analog signals representing operating parameters thereof and for converting said analog signals to digital data signals;

    a hierarchy of microcomputer subsystems wherein there is a distribution of function between such microcomputer subsystems, said hierarchy including an input and calculations microcomputer for receiving said digital data signals and for deriving therefrom other turbine generator operating parameters including thermal and mechanical stress values imposed on component parts of said turbine-generator, a display and communications microcomputer for inter-communication with peripheral equipment and operating personnel, and a control microcomputer for receiving information from other microcomputers of the hierarchy, for making decisions based on said information, and for providing said feedback control system with control directions; and

    a plurality of shared memory units, each unit of which is shared between at least two microcomputers of the hierarchy and through which information is exchanged and shared between microcomputers of the hierarchy.

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