Review of Research on Condition Assessment of Nuclear Power Plant Equipment Based on Data-Driven

doi:10.16183/j.cnki.jsjtu.2021.502

Abstract

Abstract:

The condition assessment of the entire life cycle of nuclear power equipment has a significant impact on improving the safety and economy of nuclear power plants. In the past, operation and maintenance of systems, equipment, and structures of domestic nuclear power plants, mostly relied on the alarm mechanism of equipments, the simple threshold judgments of parameters, or the empirical judgments of engineers. With the implementation of online monitoring system in nuclear power plants, a large number of equipment operation data have been accumulated, and the use of data-driven technology to assess the health of equipment has become the focus of attention in the industry. In this paper, the current situation of the online monitoring system of nuclear power equipment was introduced and the common malfunction of nuclear power equipment was analyzed. The condition assessment of nuclear power equipment were categorized into three major problems (i.e., anomaly detection, life prediction, and fault diagnosis), the situation of research and application were summarized respectively, and the application potential of deep learning technology in this field was emphasized. Based on this, the challenges and possible solutions to the condition assessment of nuclear power plant equipment were further analyzed.

Key words: nuclear power equipment, condition assessment, anomaly detection, life prediction, fault diagnosis

CLC Number:

TM623.7

XU Yong, CAI Yunze, SONG Lin. Review of Research on Condition Assessment of Nuclear Power Plant Equipment Based on Data-Driven[J]. Journal of Shanghai Jiao Tong University, 2022, 56(3): 267-278.

Figures/Tables 5

Fig.1

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References 59

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类型	常见设备	主要故障模式
泵	主冷却剂泵、屏蔽泵、离心泵、真空泵、隔膜泵、容积泵等	无法启动或启动后性劣化等
阀门	气动阀、电动阀、手动阀、截止阀、爆破阀、液动阀、卸压阀、安全阀、闸阀等	内漏、外漏、不能开、不能关、堵塞、性能下降(振动、异音)等
热交换器	蒸汽发生器和凝集器,包括板式、管壳式、表面式、混合式等	泄漏、热性能降级、失去完整结构等
容器	反应堆压力容器、主回路稳压器、其他类容器、离子交换柱等	泄漏、腐蚀、失去完整结构等
其他	管道及附件	泄漏、堵塞、性能劣化等

类型	常见设备	主要故障模式
一次设备	变压器、互感器	绝缘不合格、性能劣化(温升过高、异音、放电)等
电机	交流发电机、励磁机、电动机等	无法启动、绝缘不合格、轴承过热、性能劣化(异音、振动大)等
动作机构	断路器、继电器、开关站等	不能动作、误动作、性能劣化(跳闸、动作迟缓、噪声大)等
其他	母线、电缆等	绝缘不合格、性能劣化(绝缘降低、过热、接触电阻过大)等

类型	常见设备	主要故障模式
传感器	核测探测器、液位传感器、流量传感器、温度传感器、速度传感器等	测量漂移、无法正常显示、输出不稳定、相应迟缓、探测器老化等
控制系统	各类微机控制器、模拟量卡件、数字量卡件、网关、交换机、服务器等	卡件故障、服务器、交换机、网关无法工作、控制系统软件异常等