不同耦合方式下太阳能燃气-蒸汽联合循环热互补系统特性分析

doi:10.3969/j.issn.2097-0706.2025.08.009

摘要/Abstract

摘要：

太阳能与燃气-蒸汽联合循环（GTCC）中的底循环具有很好的热品位匹配性，不同的光热耦合方式对于GTCC的运行特性具有不同的影响。主要利用Ebsilon仿真模拟软件进行参数计算，依次构建了3类太阳能与余热锅炉分级耦合的热力学模型，并基于热力学定律，分析太阳能与以航改型燃气轮机为主机的GTCC互补发电系统的底循环耦合时的静态互补特性，引入一种定量评价指标，对比得出最佳耦合方案，并进一步探究最佳耦合方案下流量配比对系统运行性能的影响。结果表明，在设计工况下，太阳能只耦合在一级受热面时系统发电功率增加最多，相对提高1.08%；在仅耦合在高压受热面的情况下，循环效率相比传统系统提高15.30%，系统排烟温度可下降约11.38%，且20%的质量流量占比热量利用更有效，可降低排烟温度6.30 ℃；随着质量流量占比的增大，系统的发电功率呈下降趋势，最大与最小发电功率之间相差7.102 MW。在可控变化范围内，20%的质量流量占比使系统发电功率最高，耦合在高压受热面的ISCC系统㶲损9.954 MW，㶲效率63.67%。

关键词: 光热太阳能, 燃气-蒸汽联合循环, 航改燃气轮机, 底循环, 热力耦合

Abstract:

Solar energy and the bottom cycle of the gas turbine combined cycle（GTCC） exhibit good thermal quality matching. Different solar thermal coupling methods have varying effects on the operational characteristics of GTCC. Therefore，this paper mainly used Ebsilon simulation software to calculate parameters， successively constructed three types of thermodynamic models for staged coupling of solar energy and waste heat boilers， and analyzed the variation pattern of the static complementarity characteristics of solar energy and the bottom-cycle coupling in the integrated solar combined cycle（ISCC） with aeroderivative gas turbine as the main engine， based on thermodynamic laws. A quantitative evaluation index was introduced to determine the optimal coupling scheme， and the effect of flow ratio on system performance was further explored. The results showed that under the design conditions， the system's power generation increased the most when solar energy was coupled only to the primary heating surface， with an increase of 1.08%. Compared to the traditional system，cycle efficiency could increase by 15.30%，and the exhaust gas temperature could be reduced by approximately 11.38%. A 20% mass flow distribution was more effective than heat utilization， reducing the exhaust gas temperature by 6.30 ℃.As the mass flow distribution ratio continued to increase， the system's power generation showed a decreasing trend， with a 7.102 MW difference between the maximum and minimum power outputs. Within the controllable range of variation， the 20% mass flow distribution ratio resulted in the highest power generation.The ISCC system，coupled to the high-pressure heating surface， exhibited a loss of 9.954 MW and an exergy efficiency of 63.67%.

Key words: solar thermal energy, gas turbine combined cycle, aeroderivative gas turbines, bottom cycle, Thermodynamic system coupling

中图分类号:

TK12：TK51

耿直, 江雨晨, 陈柯宇, 李一帆, 李仁凤, 王璇璇, 孙千胜. 不同耦合方式下太阳能燃气-蒸汽联合循环热互补系统特性分析[J]. 综合智慧能源, 2025, 47(8): 77-88.

GENG Zhi, JIANG Yuchen, CHEN Keyu, LI Yifan, LI Renfeng, WANG Xuanxuan, SUN Qiansheng. Analysis of the characteristics of integrated solar combined cycle under different coupling methods[J]. Integrated Intelligent Energy, 2025, 47(8): 77-88.

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参数	数值
燃气轮机发电功率/MW	24.88
汽轮机发电功率/MW	10.15
循环发电功率/MW	35.03
循环热效率/%	24.10
燃气轮机排烟温度/℃	483.90
循环排烟温度/℃	150.40
烟气质量流量/(kg·s^-1)	79.17

参数	数值
燃气轮机发电功率/MW	24.881
汽轮机发电功率/MW	20.527
联合循环发电功率/MW	45.408
联合循环循环热效率/%	49.70
联合循环排烟温度/℃	119.70
烟气质量流量/(kg·s^-1)	79.17

测量部位	㶲
燃气轮机烟道出口	8.35
余热锅炉烟气出口	2.23