核电站汽轮发电机组与供汽系统的功率匹配

Power Matching of Turbine-generator Unit to Steam Supply System at Nuclear Power Station

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 the PWR turbine-generator unit at nuclear power station to the nuclear steam supply system indicates that the heat load at the surface of the nuclear bar is forced to be lower than the critical heat load with a certain surplus. In the thermodynamic design surplus in the nuclear steam supply system of the nuclear power station a small part (like 4%) can be used to increase the thermal power of the reactor core and turbine output. The average temperature of the primary loop and steam pressure of the secondary loop widely used for PWR units should be modified appropriately, i.e. the rated steam flow of the turbine matches to the rated steam flow of the nuclear steam supply system and the maximum steam flow of the turbine matches to the maximum steam flow of the nuclear steam supply system.