1000MW燃煤机组双压凝汽器冷端系统运行优化

Operation Optimization of the Cold End System with Dual-pressure Condenser of 1000 MW Coal-fired Unit

以淮南平圩第三发电有限责任公司1000MW燃煤机组双压凝汽器冷端系统为研究对象,考虑运行过程中的实时参数,建立全工况实时冷端优化模型。基于历史运行数据,验证模型的准确性,分析负荷、循环水进水温度以及清洁系数等实时状态参数的变化对冷端优化计算结果的影响,并得到计算工况下的最佳循环水泵运行方式及节能潜力。计算结果表明,63.44%的计算工况获得了节能效果,累计收益可达604.16MW·h,在高负荷和高进水温度的工况下,更需要合理确定循环水泵最佳运行方式。

Taking the cold end system with dual-pressure condenser of 1000 MW coal-fired unit of Huainan Pingwei No.3 Power Generation Co.,Ltd.as the research object,considering real-time parameters during operation,the full working conditions real-time optimization model was established.Based on the historical operation data,the accuracy of the model was verified,the influence of changes in real-time state parameters such as load,circulating water inlet temperature and clean coefficient on the optimization calculation results was analyzed,and the optimal circulating pump operation mode and energy saving potential under calculated working conditions were obtained.The calculation results showed that,63.44%of the calculation conditions had achieved energy saving effect,and the cumulative income could reach 604.16 MW•h,it is more necessary to reasonably determine the optimal operation modes of the circulating water pump under the working conditions of high load and high inlet water temperature.