Research on Fuel Management Strategy of Changjiang Nuclear Power Plant under “Large Machine and Small Grid” Operation Environment
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摘要: 昌江核电厂面临的“大机小网”问题突出,机组处于长期低功率运行状态,负荷因子也大幅度低于中国核电所辖机组平均负荷因子,核电机组发电能力未得到充分利用,给机组的安全性和经济性都带来较大的影响。为此,延伸核燃料循环研究对于提升机组安全及经济性就显得更为重要。本文通过分析机组运行客观环境、配合电网调峰的影响、年换料策略的不足,研究昌江核电厂延伸核燃料循环的可行性并对堆芯主要安全参数进行计算,结果表明通过长循环的燃料管理策略可实现提升机组整体利用率的同时,满足机组安全稳定运行的要求。Abstract: The problem that "large machine and small grid" in Hainan Changjiang Nuclear Power Plant is prominent. The load factor is greatly lower than the average level of nuclear power units in China, due to the long-term low power operation, which has great influence on the safety and economy of the unit. It is important for improving the safety and economy to study the extended nuclear fuel cycle. In this paper, the feasibility of the extended nuclear fuel cycle in Changjiang Nuclear Power Plant is studied, and the main safety parameters of the reactor core are calculated. The results show that the long cycle fuel management strategy can enhance the utilization rate of the unit, while meeting the requirements of the safety of the unit.
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Key words:
- Large Machine and Small Grid /
- Fuel management /
- Long fuel cycle
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