Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (11): 110603-110603.doi: 10.11889/j.0253-3219.2014.hjs.37.110603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Research on application of PRP to the control network for digital I&C of nuclear reactor

LIU Shaohai1,2 CHEN Yongzhong1,3 HAN Lifeng1,3 ZHANG Ning1,3 XU Haixia1,3   

  1. 1(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China) 2(University of Chinese Academy of Sciences, Beijing 100049, China) 3(Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China)
  • Received:2014-07-21 Revised:2014-08-22 Online:2014-11-10 Published:2014-11-07

Abstract: Background: Only the reliability of Rapid Spanning Tree Protocol (RSTP) and some other redundancy protocols is improved when a single-point failure occurs in the network, then the RSTP might be applied to control network of reactor’s digital instrumentation and control system (I&C). The Parallel Redundancy Protocol (PRP) released in standard IEC62439-3 and applied to the intelligent power transducing station is proposed as a possible solution to provide completely seamless switchover in case of a single-point failure. Purpose: In order to fulfill all the high-reliability requirements of redundancy control network, the PRP is applied to the digital I&C of nuclear reactor. Methods: The principle of achievable high reliability and high availability based on PRP are analyzed in detail, and a software implementation of PRP protocol has been developed based on TCP/IP over Linux in the application layer. Results: Test results show that the high reliability requirements of zero self-healing time and zero packet loss can be realized during the simple data transmitting experiments across the various network nodes. Conclusion: The PRP and the peoposed implementation plan can be employed to achieve high reliability control network for nuclear reactor’s I&C system.

Key words: Parallel redundancy protocol (PRP), IEC 62439-3, Digital instrumentation and control system (I&C), Control network, Reliability