新增用户场景下热网水泵运行仿真研究  

Simulation Research on Operation of Heating Network Water Pumps in New User Scenarios

作　　者：刘鸣寰 李硕勋 杨光[2] 王海[2] LIU Minghuan;LI Shuoxun;YANG Guang;WANG Hai

机构地区：[1]中国市政工程华北设计研究总院有限公司第六设计研究院,天津300381 [2]同济大学机械与能源工程学院,上海201804

出　　处：《煤气与热力》2025年第4期15-22,共8页Gas & Heat

基　　金：国家重点研发计划-国际合作“基于数字孪生的供热系统全网动态优化及低碳智慧调控关键技术研究”(2021YFE0116200)。

摘　　要：以实际管网为研究对象,构建单热源枝状管网、多热源环状管网仿真模型。分别对动力集中式系统、分布式变频系统、联合式供热系统(零压差点位于管网中端)在新增用户场景下的水泵(含热源水泵、热力站水泵)运行特性进行研究。采用动力集中式系统时:无论单热源枝状管网还是多热源环状管网,新增用户易使热源水泵频率有所增长,但增长幅度均保持在较低水平。采用分布式变频系统时:单热源枝状管网的热力站水泵频率增长幅度随新用户接入位置的后移有所提升,管网后端新增用户对热力站(特别是管网后端热力站)水泵频率增长幅度的影响比管网前端、中端新增用户大。对于多热源环状管网,新增用户所在一侧的热力站水泵频率变化较为剧烈,而另一侧热力站水泵频率变化幅度较小。新增用户附近热力站水泵频率增幅最大。采用联合式供热系统时:无论单热源枝状管网还是多热源环状管网,新增用户均易导致管网后端热力站水泵频率大幅增长。对于多热源环状管网,新增用户导致部分调峰热源水泵频率出现较大幅度下降。若采用联合式供热系统,应关注对水力工况变化较为敏感的调峰热源、热力站,以保证管网安全稳定运行。Taking the actual pipe network as the research object,the simulation models for single‐heat source branch pipe network and multi‐heat source ring pipe network were constructed.The operation characteristics of water pumps(including heat source pumps and heating station pumps)of the centralized power system,the distributed frequency conversion system and the combined heating system(with zero pressure drop located at the middle end of the pipeline network)in new user scenarios were studied respectively.When the centralized power system is adopted:whether it is a single heat source branch pipe network or a multi‐heat source ring pipe network,the new users are easy to increase the frequency of heat source pumps,but the growth rate remains at a relatively low level.When the distributed frequency conversion system is adopted:the frequency growth rate of water pumps in the heating station of the single heat source branch pipe network increases with the backward movement of new user access positions,and the influence of the new users at the back end of the pipe network on the frequency growth rate of water pumps in the heating station(especially the heating station at the back end of the pipe network)is greater than that of the new users at the front end and middle end of the pipe network.For the multi‐heat source ring pipe network,the frequency of water pumps in the heating station on the side where the new user is located changes more drastically,while the frequency of water pumps in the heating station on the other side changes less.The frequency growth rate of water pumps in the heating station near the new users increases the most.When the combined heating system is adopted:whether it is a single heat source branch pipe network or a multi‐heat source ring pipe network,the new users are likely to lead to a significant increase in the frequency growth rate of water pumps in the heating station at the back end of the pipe network.For the multi‐source ring pipe network,the new users lead to a significant decr

关 键 词：动力集中式系统 分布式变频系统 联合式供热系统 新增用户 水泵频率 

分 类 号：TU995.3[建筑科学—供热、供燃气、通风及空调工程]