核电厂低压电缆老化状态监测指标分析与研究  

Analysis and Researchon Monitoring Index of Aging Status of Low-voltage Cable in the Nuclear Power Plant

作　　者：雷成[1] 高帆 杨磊[1] 李亮[1] LEI Cheng;GAO Fan;YANG Lei;LI Liang(Jiangsu Nuclear Power Corporation,Lianyungang 222042,China)

机构地区：[1]江苏核电有限公司,江苏连云港222042

出　　处：《电工技术》2023年第1期132-134,137,共4页Electric Engineering

摘　　要：热老化和辐照老化是核电厂安全壳内低压电缆老化的主要影响因素。通过对样本电缆进行热-辐照联合加速老化试验,测量了电缆的多项状态参数,并建立了各项状态参数随时间的变化曲线,最终分析确定,断裂伸长率、压缩模量和氧化诱导期这三项指标可以作为电缆老化状态监测的基准指标。Thermal aging and irradiation aging are the main factors affecting the aging of low-voltage cables in nuclear power plant containment.Through the study of the heat-irradiation of sample cable joint accelerated aging test,several state parameters of the cable are measured,and the change curve of each state parameter with time is established.The final analysis determined that the three indicators of elongation at break,compression modulus and oxidation induction period can be used as benchmark indicators for cable aging condition monitoring.

关 键 词：老化 断裂伸长率 压缩模量 氧化诱导期 

分 类 号：TM246.9[一般工业技术—材料科学与工程]