Xenon Stability Analysis for 1000 MWe PWR Core
-
摘要: 由于压水堆堆芯对于总功率振荡具有固有的稳定性,且控制和保护系统对堆芯总功率不稳定提供了保护,因此关于堆芯稳定性的讨论仅限于氙致功率空间振荡(即氙稳定性)以及对径向功率分布和轴向功率分布的影响。本文主要通过三维及一维程序进行多种氙瞬态构造,对轴向氙振荡及径向氙振荡进行分析,以验证百万千瓦级压水堆堆芯在氙振荡方面是固有稳定的或可被控制的。计算结果表明,该堆芯在径向氙振荡方面固有稳定,首循环在轴向振荡方面稳定性较平衡循环略差,但可通过堆芯控制系统进行控制,使堆芯处于一个安全状态,燃料设计限值不被突破。Abstract: Since PWR is inherently stable toward total power oscillations and it is protected by the control and protection system, our analysis focuses on xenon-induced power oscillations, including axial oscillation and radial oscillation. This paper uses 1D and 3D programs to build Xenon transients, and analyzes axial oscillation and radial oscillation, to validate that the core is inherently stable or can be controlled toward xenon-induced oscillations. The results show that the core is inherently stable toward radial xenon-induced oscillations. Stability of the first cycle is worse than that of the equilibrium cycle. But through the operation by the control system, the core can stay safe, and the fuel design limit can be respected.
-
计量
- 文章访问数: 12
- HTML全文浏览量: 4
- PDF下载量: 0
- 被引次数: 0