300MW机组发电煤耗影响因素分析

Analysis on influencing factors of 300 MW generator coal consumption

结合国电太原第一热电厂有限责任公司300 MW抽气凝汽式机组相关运行参数进行耗差分析,明确发电煤耗的主要影响因子,并提出合理化降耗建议。其方法是:第一步,假定管道效率在定值条件下,用图表直观描述汽机效率、锅炉效率对该机组发电煤耗的影响程度;第二步,与设计值相比,将汽机效率、锅炉效率的影响因子进行定量化分析,测算出该机组可控损失造成发电煤耗的增量,明确其发电煤耗主要影响因子为:主蒸汽压力、凝汽器真空度、最终给水温度、排烟含氧量、排烟温度,并有针对性地提出合理化降耗措施。

Based on the 300 MW extraction condensing steam turbine operation parameters which belongs to China Electric Taiyuan NO. 1 Thermal Power Plant Limited Liability Company, analyzed the main influencing factors of coal consumption and provided reasonable energy reducing measures. The method includes two steps. At first, assumed pipeline efficiency in constant conditions, with charts intuitive description of steam turbine efficiency and boiler efficiency influence on coal consumption for power generation. Secondly, compared with the designed value, analyze the influencing factors of steam turbine efficiency and boiler efficiency quantitatively and calculate the increment of power generation coal consumption caused by controllable loss. Find that the main infulencing factors are main steam pressure, vacuum degree of condenser, final feed water temperature, oxygen content and exhaust gas temperature. Then, put forward the reasonable measures for reducing energy consumption.