集中供热网蓄热式热电联产机组的综合热力学分析  

A Comprehensive Thermodynamic Analysis of CHP Unit Incorporating Thermal Energy Storage for District Heating Network

作　　者：何烨 李超 高佳圣 周艳[1] HE Ye;LI Chao;GAO Jiasheng;ZHOU Yan(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,Shandong Province,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《动力工程学报》2022年第12期1272-1280,共9页Journal of Chinese Society of Power Engineering

摘　　要：为了改善过饱和期的热量大量冗余的同时不饱和期的热量供给不足的问题,在某600 MW热电联产机组上集成了一个储能辅助循环系统,利用热饱和度和供暖偏差2个指标评价综合供热系统的热经济性,并对该系统进行全局能流分析以及局部区域供暖系统的?分析。结果表明:在不降低综合供热系统电力输出的情况下,该系统可将供暖的热饱和度提升到100%的同时使供热偏差降低0.98百分点;且室外气温越低,综合供热系统的优势越明显。In order to improve the problem of surplus heat in the oversaturation period and insufficient heat supply in the unsaturated period,an auxiliary thermal energy storage system was integrated on a 600 MW coal-fired CHP unit.The thermal economy of the comprehensive heating system was evaluated by using two indexes of thermal saturation and heating deviation,and the global energy flow analysis and the exergy analysis of the local district heating system were conducted.Results show that without reducing the power output of the whole system,it could increase the heat saturation of the heating to 100%meanwhile reduce the heating deviation by 0.98%.The lower the outdoor temperature is,the more obvious the advantages of the integrated heating system will be.

关 键 词：热电联产 储能 热饱和度 供热偏差 

分 类 号：TM621.4[电气工程—电力系统及自动化]