摘要
针对国内某核电厂执行堆外中子注量率测量通道周期试验异常触发反应堆自动停堆实例,制定了核电厂电气厂房正常照明系统电源对过程仪表系统干扰测试方案。测试方案主要包括:照明灯通断的干扰测试;本组220 V(AC)检修电源箱的干扰测试;220 V(AC)电缆安全距离的干扰测试以及过程仪表机柜接地体系。根据干扰测试结果对反应堆自动停堆事件产生的原因进行分析。改进方案从增大源项距离、屏蔽源项以及接地系统优化3个方面抑制干扰信号,有效消除及降低了信号的干扰幅度。
Based on the abnormal trip of one domestic nuclear power plant reactor during the test of neutron flux measurement channels, Test scheme is established for the interference of the power source of the normal lighting system in the electrical building of the nuclear power station on the process instrumentation system, including the lights on/off interference test, the 220 V（AC） power supply box interference test, the safe distance between 220 V（AC） cable, process instrumentation system cabinet interference test and the cabinet ground check. Based on the test results, the causes of reactor trip is analyzed and the improvement program is proposed, including source term distance method, source term shielding method and grounding system correction. Some measures were verified that it can improve the ability of anti-electromagnetic interference.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2016年第6期71-74,共4页
Nuclear Power Engineering
关键词
干扰
过程仪表系统
超温保护通道
电气厂房正常照明系统
Electromagnetic interference, Process instrumentation system, Over temperature protection channel, Normal lighting system in electrical building
