2016年第11期（总第227期）
doi:10.3969/j. issn. 1009 3230.2016.11.006
应用能源技术
双压无再热联合循环系统热力参数优化分析
董帅"，弓学敏"”，崔厚品'，李永强"，王晨”
15
（1.华北电力大学，河北保定071003；2.保定华电电力设计研究院有限公司，河北保定071003；
3.太原市热力公司，山西太原030000）
摘要：文中针对燃气蒸汽联合循环中双压无再热汽水系统的热力参数对循环效率的影响，利用热平衡方程式通过Matlab计算软件建立了汽水系统的计算模型，基于PG9171E型燃气轮机，以底循环效率为目标函数，建立了余热锅炉的高压蒸汽温度上限，排汽湿度，高压蒸汽账到低压蒸汽压力时与低压蒸汽的温差三个约束条件，对系统热力参数进行计算，得到热力参数对系统性能的影响曲线，通过进一步优化，最终得到汽轮机最佳的运行参数。
关键词：双压无再热；Matlab；热力参数；优化中图分类号：TK229.4
文章编号：10093230(2016)110015-05
文献标志码：B
OptimizationofThermodynamicParametersofDoublePressure
Non Reheating Combined Cycle System
GONG Xue min'-2, DONG Shuai', CUI Hou -pin', LI Yong -qiang', WANG Chen'(1.North China Electric Power University,Baoding 071003,Hebei Province,China;
2. Baoding Huadian Electric Power Design Institute Co,Ltd,Baoding 071003Hebei Province, China ;
3.Taiyuan heating company,Taiyuan 030000,Shanxi Province,China)
Abstract: The computational model of steam and water system is established by Matlab computing software using heat balance equation in this paper, in the light of the influence of thermodynamic parameters on the cycle efficiency in double pressure non reheating water system of combined cycle of gas and steam plant. Based on PG9171E type gas turbine, taking bottom cycle efficiency as the objective function, three constraint conditions are established including high pressure steam temperature limitof waste heat boiler, exhaust humidity,temperature difference between high pressure steam expanding to low pressure steam pressure and low pressure steam. The themodynamic parameters of the system are caleulated. The influence of thermal parameters on the system performance is obtained. Through further optimization, the optimum operating parameters of steam turbine are finally obtained.
Key words: Double pressure non reheating water system; Matlab; Thermodynamicparameters; Opti-mization
0引言
燃气蒸汽联合循环发电具有热效率高、三废排放少、占地面积小、水资源消耗少、运行维护方
收稿日期：2016-09-21
修订日期：2016-1020
作者简介：董筛(1991-），男，华北电力大学（保定）硕士
研究生在读，主要从事燃气蒸气联合循环优化工作。
万方数据
便、适于调峰等优点)。在燃气轮机选定的情况下，由于蒸汽系统本身的复杂性以及多样性，需要对蒸汽系统进行合理的选择和优化[2)，最大程度上利用燃气轮机的排气余热，使得联合循环机组能够更加高效安全的运行，以达到节能减耗的目的(3)。
文中选用CE公司的PC9171E型燃气轮机为对象，为其配置双压无再热蒸汽系统，通过Matlab