基于RBD的核电站数字化保护系统可靠性指标预计方法研究

摘要

本文研究了核电站数字化保护系统的可靠性指标体系及指标计算原理，给出了基于RBD的数字化保护系统可靠性指标预计方法，并将该方法应用于阳江核电厂5、6号机组数字化保护系统的可靠性指标预计中。工程实践表明，该方法不仅可以评估系统的可靠性指标，还能通过定量分析找出系统的薄弱环节，并提出改进方案以供设计人员参考，从安全性、可靠性定量分析的角度为系统设计改进提供依据。%This paper provides the available method of reliability prediction for digital protection system by analyzing the reliability parameters of the nuclear power plant digital protection system. On the basis of researching the method of RBD, an effective reliability prediction method is applied in the Yang Jiang 5&6 nuclear power plant digital protection system. In view point of project application, the result proves that the above methods can effectively evaluate the reliability, as well as the design guidance for the designer by analyzing the system’s weakness. Above all, this method can quantitatively provide the guidance as the design improvement.