The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Reliability Improvement of a Fault Tolerant Digital Governor

내고장성 디지털 조속기의 신뢰성 향상에 관한 연구

  • 신명철 ((주) 미디어 시스텍(Mediasystech Co., Ltd)) ;
  • 전일영 (한국해양대학교 대학원 전기공학과) ;
  • 조성훈 (한국해양대학교 대학원 전기공학과) ;
  • 이성근 (한국해양대학교 전기·전자공학부) ;
  • 김윤식 (한국해양대학교 전기·전자공학부)
  • Published : 2002.05.01
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Abstract

In this paper, fault tolerant digital governor is designed to realize ceaseless controlling and to improve the reliability of control system. Designed digital governor huts duplex I/O module and triplex CPU module and also 2 out of 3 voting algorithm and self diagnostic ability. The Processor module of the system(SIDG-3000) is developed based on 32 Bit industrial microprocessor, which guaranteed high quality of the module and SRAM for data also SRAM for command are separated. The process module also includes inter process communication function and power back up function (SRAM for back-up). System reliability is estimated by using the model of Markov process. It is shown that the reliability of triplex system in mission time can be dramatically improved compared with a single control system Designed digital governor system is applied after modelling of the steam turbine generator system of Buk-Cheju Thermal Power Plant. Simulation is carried out to prove the effectiveness of the designed digital governor system

Keywords

References

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