电力学报2024，Vol.39Issue(6)：512-528,17.DOI:10.13357/j.dlxb.2024.054
燃煤机组与内燃机组合系统的运行特性分析
Characteristics Analysis of Combined System of Coal-fired Unit and Internal Combustion Engines
摘要
Abstract
The new power generation system formed by the combination of coal-fired unit and internal combus-tion engines has a strong capacity of peak regulation and frequency regulation,so that it can adapt to the rapid load fluctuations brought by renewable energy in a large proportion.Meanwhile,the thermal economy of coal-fired unit can be further improved by utilizing the high-temperature flue gas and cooling water waste heat of in-ternal combustion engines in the thermal system of coal-fired unit.EBSILON software is used to model the combined system,and the heat consumption rate of coal-fired units is taken as the evaluation index to analyze the operating characteristics of the combustion engine under different load operation and the combination of coal-fired units,and the optimal utilization plan of flue gas and cooling water waste heat under different working con-ditions is obtained.The combination position of high pressure heat exchanger for flue gas waste heat,low pres-sure heat exchanger for flue gas waste heat,cooling water waste heat and coal-fired unit and the intermediate smoke temperature have direct influence on the thermal economy of coal-fired unit.The higher the load rate of combustion engine,the lower the heat consumption rate of coal-fired unit.When the load rate of the internal combustion engine is increased from 30％to 100％,the heat consumption rate of the coal-fired unit is reduced by 3.23％～6.62％compared with the non-combined internal combustion engine,and the heat economy is sig-nificantly improved.关键词
新型发电系统/燃煤机组/内燃机组/余热/热耗率/负荷率Key words
the new power generation/coal-fired unit/internal combustion engine/waste heat/heat consump-tion rate/load rate分类
能源科技引用本文复制引用
朱开轩,张志勇,陈钢,王成,陆利烨,王晓东,张鹏飞,周托..燃煤机组与内燃机组合系统的运行特性分析[J].电力学报,2024,39(6):512-528,17.基金项目
中国华能集团有限公司总部科技项目"煤电集成燃气内燃机调峰调频的关键技术及工程应用研究"(HNKJ22-HF17). （HNKJ22-HF17）
