Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Design of pole-assignment self-tuning controller for steam generator water level in nuclear power plants

원전 증기 발생기 수위 제어를 위한 자기 동조 제어기 설계

  • Choi, Byung-Jae (Dept. of Electrical Electronic Engineering, Korea Advanced Institute of Science and Technology) ;
  • No, Hee-Cheon (Korea Advanced Institute of Science and Technology) ;
  • Kim, Byung-Kook (Dept. of Electrical Electronic Engineering, Korea Advanced Institute of Science and Technology)
  • 최병재 (한국과학기술원 전기 및 전자공학과) ;
  • 노희천 (한국과학기술원 원자력공학과) ;
  • 김병국 (한국과학기술원 전기 및 전자공학과)
  • Published : 1996.12.01
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Abstract

This paper discusses the maintenance of the water level of steam generators at its programmed value. The process, the water level of a steam generator, has the nonminimum phase property. So, it causes a reverse dynamics called a swell and shrink phenomenon. This phenomenon is severe in a low power condition below 15 %, in turn makes the start-up of the power plant too difficult. The control algorithm used here incorporates a pole-assignment scheme into the minimum variance strategy and we use a parallel adaptation algorithm for the parameter estimation, which is robust to noises. As a result, the total control system can keep the water level constant during full power by locating closed-loop poles appropriately, although the process has the characteristics of high complexity and nonlinearity. Also, the extra perturbation signals are added to the input signal such that the control system guarantee persistently exciting. In order to confirm the control performance of a proposed pole-assignment self-tuning controller we perform a computer simulation in full power range.

Keywords

References

  1. BNES Toward efficient full automatic operation of the PWR steam generator with water level adaptive control E. Irving(et al.)
  2. KAIST, Master Thesis A study on Pole-assignment Self-tuning Control for Steam Generator Water Level B.-J. Choi
  3. Int. J. Control v.43 no.6 Self-tuning control application to a nuclear power plant G.-T. Park
  4. Proc. IEE v.127 no.1 Generalized self-tuning controller with pole-assignment A.Y. Allidina(et al.)
  5. Optimal Control Applications & Methods v.7 An implicit pole-assignment self-tuning regulator K.Z. Karam(et al.)
  6. Computer Controlled Systems: Theory and Design K.J. Astrom;B. Wittenmark
  7. Adaptive Filtering Prediction and Control G.C. Gookwin;K.S. Sin
  8. KRC-90Ⅰ-J03 보일러 계수 추정에 의한 최적 보일러 제어기 개발(1) 한전기술연구원
  9. 증기발생기 수위제어 및 보호계통 개선 한전기술안전지원실
  10. '93 종합연구 발표자료 원전 S/G Water Level 제어계통 디지탈화 및 적용연구 문병희