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Steam turbine generator control system

  • US 4,368,520 A
  • Filed: 09/29/1980
  • Issued: 01/11/1983
  • Est. Priority Date: 09/29/1980
  • Status: Expired due to Term
First Claim
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1. A control system for a steam turbine operative to drive an electric generator and having a plurality of steam admission valves which are controllable in position to determine the operating level of the turbine, comprising:

  • (A) a controller including programmable digital computer means operable to receive and store input target set point signals and being responsive to said signals to generate a plurality of digital valve control signals;

    (B) each said steam admission valve including a valve actuation circuit operable, in response to a valve position control signal, to position the valve so as to control its degree of opening;

    (C) position detection means coupled to each said valve to provide respective feedback signals indicative of valve position;

    (D) a plurality of valve position control circuits each including programmable digital computer means operable to receive and store a respective one of said digital valve control signals as well as a respective one of said feedback signals and being responsive to said digital valve control and feedback signals to generate a respective one of said valve position control signals; and

    (E) said programmable digital computer means of said valve position control circuit being additionally operable to transmit selected stored digital information back to said controller.

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