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压水堆核电站汽轮发电机组与核蒸汽供应系统的功率匹配是使燃料棒表面的热负荷小于临界热负荷 ,并留有一定裕度。核电站核蒸汽供应系统的热工设计裕度中有一部分如 4 %可用于增加堆芯热功率和汽轮机出力。压水堆核电机组广泛采用一回路平均温度和二回路蒸汽压力都做适当变化 ,即汽轮机额定蒸汽流量与核蒸汽供应系统额定蒸汽流量相匹配 ,汽轮机最大蒸汽流量与核蒸汽供应系统最大蒸发量相匹配。
The power matching of PWR nuclear power plant and nuclear steam supply system is such that the thermal load on the surface of the fuel rods is less than the critical thermal load and a certain margin is left. Some 4% of the thermal design margin of a nuclear power plant’s nuclear steam supply system can be used to increase the core thermal power and turbine output. The PWR nuclear power unit widely uses the average temperature of the primary circuit and the secondary circuit steam pressure to make proper changes. That is, the rated steam flow of the steam turbine matches the rated steam flow of the nuclear steam supply system. The maximum steam flow of the steam turbine and the maximum evaporation of the nuclear steam supply system are match.