基于集中质-量调节的综合能源系统供能管网管径优化设计方法及系统经济性分析

摘要

供能管网的投资扣运行损耗对综合能源系统的工程可行性和经济性有重要的影响,因此提出了一套基于集中质-量调节运行模拟的综合能源系统供能管网管径优化设计方法.运行调节根据当前时刻负荷比最大的用户的负荷情况调节综合能源站的供水流量和温度,较好地贴近总负荷曲线;优化设计方法以等年值总投资最小为目标选择最优管径组合,综合考虑了系统初始投资和长期运行费用,提高了总体经济性.选择广州中新知识城某商住混合区作为算例,验证了所提方法的有效性,并分析了供能调节下的运行成本和综合能源系统供能半径对管网规划的影响.%The feasibility and economy of an IES (Integrated Energy System) project is greatly affected by the investment and operational cost of its piping network,for which,a method of optimal diameter sizing based on the centralized quality-quantity regulation is proposed.The temperature and quantity of the water flow supplied by the energy station is regulated according to the load of its user with the maximum load ratio at present moment,in that the total load curve is better matched.With the minimum equivalent annual total cost as its objective,the proposed method selects the optimal combination of pipe diameters to comprehensively consider the initial investment and the long-term operational cost for enhancing the overall economic performance.With the Sino-Singapore Guangzhou Knowledge City as an example,the effectiveness of the proposed method is verified,the operational cost under energy-supply regulation and the influence of IES energy-supply radius on the piping network planning being analyzed.