摘要
如何开展反应堆控制保护系统测量设备的现场校准工作,特别是核测系统的2个非标设备-功率测量保护装置和周期测量保护装置,输入信号跨8个数量级,输出周期信号又按非线性刻度。由于信号在测量、转换和传输过程中引入的误差,使得同一个信号在保护系统和计算机系统的显示值不一致。作者根据研究堆调试阶段核测设备校准的经验,提出了核测系统测量设备的校准方法。核测功保输出的预报警信号向保护系统测量结果修正,这样能保证预报警触发信号与保护触发信号之比为1.05∶1.1的关系。保护系统校准周期保护触发动作点,保证堆功率增长周期为10 s时保护系统送出事故信号。校准结果不仅满足了保护系统触发精度的要求,也使同一个监测参数在不同位置的示值较为一致。
It＇s difficult to carry out the on-site calibration of the measuring equipment of nuclear reactor control and protection system,especially to carry out calibration of power measuring protection equipment and period measuring protection equipment,the input signals range from reactor intermediate range to reactor full level,or from 10-11A to 10-4A,the output period signal scaled by 1/T function.Because of the errors introduced during signal measurement,conversion and transmission,the same signal has difference display value in the protection system and the distributed control system（DCS）.This paper presents a calibration method of Neutron Flux Measurement Instrumentation（NFMI） based on author＇s experience calibrating NFMI in the commissioning of research reactors.Through modifying measurement software,we can ensure the signals keep 1.05∶1.1 relation between the alarm system and protection system.The period protection trigger action point calibrated by specific software to ensure the protection system sending accident trigger action once the reactor power period below 10s.Results of calibration meet the accuracy requirements of the protection system triggering,the monitoring parameter values also display more consistent in different systems.
出处
《核科学与工程》
CSCD
北大核心
2010年第4期344-349,共6页
Nuclear Science and Engineering
关键词
反应堆
核测功保
核测周保
nuclear reactor
power measuring protection equipment
period measuring and protection equipment
