新型燃气轮机再热联合循环系统分析与优化  

Analysis and Optimization of a Reheat Combined Cycle System for New Type Gas Turbines

作　　者：付忠广[1] 卢可[1] 郭桦 杨天亮 

机构地区：[1]华北电力大学火力发电国家工程技术研究中心,北京102206 [2]中国国电集团新能源技术研究院,北京102209

出　　处：《热能动力工程》2015年第6期859-864,969,共6页Journal of Engineering for Thermal Energy and Power

基　　金：中央高校基本科研业务费专项资金资助项目(13XS09;2014ZZD04)

摘　　要：提出了一种新型高压再热燃气蒸汽联合循环系统,采用Aspen Plus软件建立高压再热燃气蒸汽联合循环系统模型,对该新型系统进行了热力学计算分析和变工况模拟,深入地研究分析了系统的最高压力对循环效率的影响。结果显示,新系统的联合循环效率达61.22%,比目前以F级燃气轮机机组为主要设备的联合循环系统效率提高3.6%,比GT26再热型燃机也高出近1.2%。新型高压再热系统输出功率可达816.8 MW,较目前F级联合循环机组容量高出73%。A new type high pressure reheat gas-steam combined cycle system was proposed and a model for high pressure reheat gas-steam combined cycle systems was established by using the software Aspen Plus. A thermodynamic calculation and analysis,and off-design condition simulation of the system in question were performed. On this basis,the influence of the highest pressure of the system on the efficiency of the cycle was studied and analyzed in depth. It has been found that the thermal efficiency of the system in question reaches 61. 22%,about 3. 6 percentage points higher than that of a combined cycle system with a currently prevailing F class gas turbine unit serving as the main equipment item and also 1. 2 percentage points higher than that of a combined cycle system with a GT26 reheat type gas turbine serving as the main equipment item. The output power of the system in question can hit 816. 8MW,73%higher than the capacity of a current F class gas turbine combined cycle system.

关 键 词：燃气轮机 联合循环 热力系统 参数优化 

分 类 号：TM611.3[电气工程—电力系统及自动化]