基于多维诊断方法的核测仪表电缆老化状态评估  

Aging Condition Assessment of Nuclear Instrumentation Cables Based on Multi-Dimensional Diagnostic Methods

作　　者：王雷 岳腾霄 汪亮 熊剑 WANG Lei;YUE Tengxiao;WANG Liang;XIONG Jian(China Nuclear Power Operation Technology Corporation Ltd.,Wuhan 430223,China;Hainan Nuclear Power Co.,Ltd.,Changjiang 572733,China)

机构地区：[1]中核武汉核电运行技术股份有限公司,武汉430223 [2]海南核电有限公司,昌江572733

出　　处：《电线电缆》2025年第4期53-56,共4页Wire & Cable

摘　　要：某核电厂堆外核测仪表电缆在停冷风阶段发生状态异常,针对该问题,对核电厂堆外核测仪表电缆开展绝缘性能检查与老化状态评估。采用线性共振分析、时域反射测试、介质损耗频谱测试等多维诊断方法,对核测仪表电缆开展局部缺陷定位和整体老化状态评估。研究结果表明,多维诊断方法简单便捷,缺陷定位精确高效。最后,文中提供了核测仪表电缆的状态评估结果,并给出了电缆服役过程中存在问题的改进建议。In response to the abnormal state of nuclear instrumentation cables outside nuclear power plant during cold shutdown phase,insulation performance inspection and aging status evaluation on nuclear instrumentation cables were conducted.Linear resonance analysis,time-domain reflection test,and dielectric loss spectrum test were used to locate local defects and evaluate aging status of nuclear instrumentation cables.Results demonstrated that the multi-dimensional diagnostic methods were simple and convenient,with defect localization being accurate and efficient.Finally,condition evaluation results of nuclear instrumentation cables and improvement suggestions for the problems in cable service process were given.

关 键 词：核测电缆 多维诊断 绝缘性能 状态评估 

分 类 号：TM641[电气工程—电力系统及自动化]