1000MW超超临界二次再热机组循环水系统运行方式优化

Circulating water systems operation mode optimization of the ultra supercritical 1 000 MW double-reheat unit

循环水系统运行方式优化是指在机组系统配置内通过试验及计算取出最优的循环水泵组合使得电厂的经济性最优。利用冷端系统的试验结果,结合机组微增功率和背压关系曲线以及凝汽器变工况特性,得出机组在不同运行负荷和冷却水进口温度下冷端循环水泵的最佳运行方式,最后验证了该方法具有较强的经济节能意义。

The operation mode optimization of circulating water system means that the optimal circulating water pump combination can be taken out by test and calculation in the unit system configuration to make the power plant economy optimal. Based on the test results of the cold end system, combined with the relationship curve between the micro power and back pressure of the unit and the variable working condition characteristics of the condenser, the optimal operation mode of the cooling end circulating water pump is obtained under different operating loads and inlet temperature of the cooling water. Finally, it is proved that this method has strong economic and energy saving significance.