CAJ | 학술논문

秦山一期核电厂300 MW反应堆功率棒控棒位系统为模拟仪表控制系统,由于设备老化、维护困难和可靠性下降等原因需要改造.系统改造采用基于CPU冗余、电源冗余和ControlNet现场总线冗余的控制方案.利用PLC控制技术,对其棒控棒位模拟仪表控制系统进行数字化改造设计,克服了系统参数不能实时调整、抗干扰能力差等缺陷,增强了系统的通信能力、集中监控能力及系统可维护性,提高了系统的可靠性和安全性.模块化的程序设计,增强了程序的可读性和实用性,减少了程序扫描时间,保证了系统响应速度.实际反应堆的运行效果验证了设计的合理性.
진산일기핵전엄300 MW반응퇴공솔봉공봉위계통위모의의표공제계통,유우설비노화、유호곤난화가고성하강등원인수요개조.계통개조채용기우CPU용여、전원용여화ControlNet현장총선용여적공제방안.이용PLC공제기술,대기봉공봉위모의의표공제계통진행수자화개조설계,극복료계통삼수불능실시조정、항간우능력차등결함,증강료계통적통신능력、집중감공능력급계통가유호성,제고료계통적가고성화안전성.모괴화적정서설계,증강료정서적가독성화실용성,감소료정서소묘시간,보증료계통향응속도.실제반응퇴적운행효과험증료설계적합이성.
A novel control strategy based on the redundancies of CPU, power supply and ControlNet field-bus is proposed to solve the problems of equipment aging, maintenance and reliabiiity of Qinshan PLC control technology is used to replace its rod control and position indication so that the limitations of being unable to adjust the system parameters online and poor anti-interference capability can be avoided and the system communication, central monitoring, maintainability, reliability and security can be improved. The modular program design can strengthen the readability and practicability, shorten the scanning time and speed the response. The feasibility and rationality of the design have been proved in a practical reactor operation. Finally, the author briefly introduces some feasible ways to enhance the reliability of the reactor digital control system.