超大型火力发电机组冷却水泵优化配置

Optimization of cooling water pump in super-large thermal power units

为了达到节能降耗的目的,对火力发电厂1000MW机组冷却水系统1台机组配3台冷却水泵单元制、1台机组配2台冷却水泵单元制和扩大单元制3种配置进行技术经济比较。从工程费用、冷却水泵的年耗电量及发电机组的微增出力几个方面综合分析讨论认为:1台机组配3台冷却水泵单元制冷却水系统对于双背压凝汽器的超大型机组是较为经济合理的冷却水泵配置和运行方式。

For purpose of energy-saving and cost-reducing, three cooling water pumps for one unit system, two cooling water pumps for one unit system and expanding unit system of 1 000 MW thermal power units were compared in technology and economic. By generally analyzing and discussing on construction costs, annual electrical power consumption of the cooling water pumps and output correction of units, the conclusion was that three cooling water pumps for one unit system would be more economical and rational on scheme and operating for super-large power units with a dual-pressure condenser.