长燃料循环中间量程补偿电压设置优化  

Optimization of Intermediate Range Compensation Voltage Setting for Long Fuel Cycle

作　　者：周磊 吴小璇 徐飘 陈子鸣 沈聪 许进 ZHOU Lei;WU Xiao-xuan;XU Piao;CHEN Zi-ming;SHEN Cong;XU Jin(Nuclear Power Operation Management Co.,Ltd.,CNNP,Haiyan,Zhejiang Prov.314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300

出　　处：《中国核电》2021年第4期581-586,共6页China Nuclear Power

摘　　要：对于压水堆机组,停堆后要等到P6信号触发才能自动投用源量程。P6信号由中间量程确定。中间量程为γ补偿电离室,当补偿电压设置不合适,会导致中间量程处于过分欠补偿或者过分过补偿状态。方家山机组实施长燃料循环后,P6信号对应中间量程电流值降低。又叠加停堆后,γ射线能量对中间量程测量值影响较大。致使P6信号出现较晚,影响大小修主线。For pressurized water reactor units,after shutdown,the source range can be automatically used after the P6 signal appears.The P6 signal is determined by the intermediate range.The intermediate range is theγcompensation ionization chamber.When the compensation voltage setting is not applicable,the intermediate range will be in an over-under-compensated or over-over-compensated state.After the Fangjiashan unit implements a long fuel cycle,the P6 signal corresponding to the intermediate range current value decreases.After the reactor shutdown is superimposed,theγ-ray energy has a greater impact on the intermediate range measurement value.As a result,the P6 signal appears late,which affects the main line.

关 键 词：长燃料循环 P6信号 中间量程 补偿电压 

分 类 号：TM623[电气工程—电力系统及自动化]