基于吸收式机组的长输管网蓄热调峰能力研究  

Study on Heat Storage and Peak Shaving Capacity of Long-distance Pipeline Network based on Absorption Unit

作　　者：李少彬 李永华[1] 董益华 谢英柏[1] LI Shao-bin;LI Yong-hua;DONG Yi-hua;XIE Ying-bai(Department of Power Engineering,North China University of Electric Power,Baoding,China,Post Code:071003;Zhejiang Energy Technology Research Institute Co.,Ltd.,Hangzhou,China,Post Code:311121)

机构地区：[1]华北电力大学动力工程系,河北保定071003 [2]浙能技术研究院有限公司,浙江杭州311121

出　　处：《热能动力工程》2023年第7期52-59,共8页Journal of Engineering for Thermal Energy and Power

摘　　要：针对我国热电厂采用“以热定电”的运行方式导致的“热电耦合”问题,以实际长输管网为例,分别建立蓄热调峰负荷、吸收式换热机组等数学模型,编写Python程序,研究基于吸收式机组的长输管网蓄热调峰能力及其影响因素。研究结果表明:采用吸收式机组的长输管网具有较强的蓄热调峰能力,经过4 h蓄热可提供306.79 MW调峰负荷以及至少14 h的调峰持续时间;长输管网的蓄热调峰能力会随机组供热负荷、调峰时段室外平均温度的增加而增加;相比于传统水-水热交换器,采用吸收式换热机组的长输管网蓄热调峰负荷上限会降低44.62%,但调峰可持续时间增加75%,更适合长时间、低负荷调峰。In view of the"thermoelectric coupling"problem caused by the operation mode of"determining electricity by heat"in China′s thermal power plants,taking the actual long-distance pipeline network as an example,the mathematical models of heat storage and peak shaving load and absorption heat exchanger unit were established respectively,and Python programs were compiled to study the heat storage and peak shaving capacity of long-distance pipeline network based on absorption unit and its influencing factors.The research results show that the long-distance pipeline network with absorption units has a strong capacity of heat storage and peak shaving.After 4 hours of heat storage,306.79 MW peak shaving load and at least 14 hours of peak shaving duration can be provided;the heat storage and peak shaving capacity of long-distance pipeline network will increase with the increase of heating load and outdoor average temperature during peak shaving;compared with the traditional water to water heat exchanger,the upper limit of heat storage peak shaving load of long-distance pipeline network with absorption heat exchanger unit will be reduced by 44.62%,but the duration of peak shaving will increase by 75%,which is more inclined to long time and low load peak shaving.

关 键 词：管网蓄热 热电解耦 长输管网 电网调峰 

分 类 号：TK02[动力工程及工程热物理]