Study on Visual Monitoring System of Nuclear Power Operating Safety Status Evaluation Base on Real-time Data

Nuclear safety is the main problem that is committed to solving since nuclear power industry appeared. The safety problem of nuclear electrical power plant draws wide attention in the world after the Fukushima accident. While the system of nuclear electrical power plant is very complicated and there is huge information for monitoring, what is directly monitored during the operation is the local information of nuclear electrical power plant and there are not enough materials about the operating state of nuclear electrical power plant. For solving the above problem, this article proposes an evaluation model for the health status of nuclear electrical power plant based on CAE theory and GSN demonstration method and a visual analysis system for evaluating the health status when nuclear power is operated is suggested according to this evaluation model. This evaluation module connects the main safety functions, subfunctions and basic monitoring information together as an evaluation structure of hierarchical nodes with weight allocation and quantity information of health assessment according to the reactivity control, core cooling and the shield for radioactive substance. For the severe deterioration on some nodes of evaluation module during the operating process, this article suggests a kind of variable weight algorithm, which allocates in real-time the weight based on the evaluation value of health of nodes so that an accurate evaluation of the health status of nuclear power operation can be made. This visualized monitoring system uses the visualization method with multi-scale and linking movements of multi views to monitor in real-time the health status of the operating nuclear power and helps users to monitor in real-time and analyze the health status of every main safety function, subfunction and basic monitoring information, so that users can realize the health status of operating nuclear power whether it is the whole or detail. At the same time, the usage method of the system can be detailed in the scene of specific cases and the research of users can be also carried out.