大亚湾核电站延伸运行及降功率期间反应堆轴向功率偏差的控制及其计算机模拟分析

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Axial Power Difference Control Strategy and Computer Simulation for GNPS during Stretch-out and Power Decrease

Administrative Departmert of Guangdong Nuclear Power Joint Ventare Co. Itd, Shenzhen, 518124, China

摘要: 针对压水堆核电站反应堆轴向功率偏差控制比较困难的情况,分析了引起轴向功率偏差的影响因素,特别是降功率对轴向功率偏差的影响。根据分析结果提出相应的控制反应堆轴向功率偏差的策略,以保证核电站功率瞬变运行满足核安全的需要。用计算机模拟了不同控制策略下降功率过程轴向功率偏差的变化,并与大亚湾核电站现场测量系统的测量值比较,证明不同控制策略下的计算机模拟分析结果是可信的。
- 轴向功率偏差 /
- 延伸低功率运行 /
- 反应堆控制
Abstract: Successful control of the axial power difference for PWR is crucial to nuclear safety. After analyzing various elements’ effect on the axial power distribution, different axial power deviation control strategies have been proposed to comply with different power decrease scenarios. Application of the strategy to computer simulation shows that our prediction of axial power deviation evolution is comparable to the measurement value, and that our control strategy is effective.
- Axial power difference /
- Extended lower power operation /
- Reactor control