机组性能偏离设计状态时循环水系统优化分析_张炜光.pdf

第55 卷第3 期 汽 轮 机 技 术 Vol． 55 No． 3 20 13 年6 月 TUＲBINE TECHNOLOGY Jun． 20 13 机组性能偏离设计状态时循环水系统的优化分析 1 1 2 张炜光 ，叶学民 ，吴瑞涛 ( 1 华北电力大学能源动力与机械工程学院 ，保定 07 1003; 2 河北省 电力研究院，石家庄 050021) 摘要:实际运行中的机组一般会不同程度地偏离设计状态，由此导致循环水系统优化失真。以某300MW 机组为对 象，采用静态建模方法分别对汽轮机低压缸效率与凝汽器清洁系数下降的热力系统进行建模，分析了凝汽器主要 热力参数变化对凝汽器性能的影响，确定了循环水系统最优运行方式及经济运行区域图，并实例分析了循环水系 统优化前后对机组效益的影响。 关键词:静态建模方法;热力系统;偏离设计状态;循环水系统;优化运行 分类号:TK267 文献标识码:A 文章编号:1001-5884 (2013)03-0211-04 Optimization Analysis of Circulating Water System in a Unit Deviating Design Point ZHANG Wei-guang1 ，YE Xue-min1 ，WU Ｒui-tao2 (1 School of Energy Power and Mechanical Engineering ，North China Electric Power University ，Baoding 07 1003 ，China ; 2 Hebei Electric Power Ｒesearch Institute ，Shijiazhuang 050021，China) Abstract :The practical performance of units is usually deviated from the design point ，which would distort the optimization of circulating water systems． For a 300MW unit ，the thermal system configuration under the efficiency decrease of low pressure cylinder and the reduction of condenser clean coefficient are respectively established using the steady state modeling software． The effects of thermal parameters on condenser performance are investigated and the optimized operating table and regulation scheme for the circulating water system are suggested． The comparison of economic benefit under four running modes is also analyzed． Key words :steady state modeling ;thermal System ;deviating design point ;circulating water system ;optimal operation 对循环水系统优化产生一定误差。 0 前