Nuclear Engineering and Technology

  • 제53권5호
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  • Pages.1436-1445
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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A study on the dynamic characteristics of the secondary loop in nuclear power plant

  • Zhang, J. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Yin, S.S. (Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China) ;
  • Chen, L. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Ma, Y.C. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Wang, M.J. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Fu, H. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Wu, Y.W. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Tian, W.X. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Qiu, S.Z. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University) ;
  • Su, G.H. (Shaanxi Key Lab. of Advanced Nuclear Energy and Technology, Xi'an Jiaotong University)
  • 투고 : 2020.04.26
  • 심사 : 2020.11.15
  • 발행 : 2021.05.25
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초록

To obtain the dynamic characteristics of reactor secondary circuit under transient conditions, the system analysis program was developed in this study, where dynamic models of secondary circuit were established. The heat transfer process and the mechanical energy transfer process are modularized. Models of main equipment were built, including main turbine, condenser, steam pipe and feedwater system. The established models were verified by design value. The simulation of the secondary circuit system was conducted based on the verified models. The system response and characteristics were investigated based on the parameter transients under emergency shutdown and overload. Various operating conditions like turbine emergency shutdown and overspeed, condenser high water level, ejector failures were studied. The secondary circuit system ensures sufficient design margin to withstand the pressure and flow fluctuations. The adjustment of exhaust valve group could maintain the system pressure within a safe range, at the expense of steam quality. The condenser could rapidly take out most heat to avoid overpressure.

키워드

과제정보

The authors appreciate the support from National Natural Science Foundation of China (Grant No. 11905168) and China Postdoctoral Science Foundation (Grant No. 2018M643644).

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