分布式供热输配系统理论解析
Theoretical analysis of distributed heating transmission and distribution systems
摘要：
随着集中供热系统不断扩容，热源布局和管网系统水力工况变得更加复杂，所以管网水力平衡调节技术要求也越来越高，从而使得分布式变频输配技术替代调节阀调节技术应运而生。分布式变频输配技术增强了系统的可调节性，且具有较大的节能潜力。针对供热输配系统进行了理论分析，旨在使分布式变频输配系统在智能化为主导的现代供热系统中应用更广泛、更有效。理论分析计算表明，与集中设计方法相比，分布式变频技术的应用会带来较好的节能效果，逐步凸显其优势。当今热网水力计算软件智能化水平越来越高，对不同的分布式变频系统进行模拟计算与可及性分析，可得到供热系统最优输配设计数据，进而可以提高系统的输送能效。
Abstract：
With the continuous expansion of centralized heating systems, the layout of heat sources and the hydraulic condition of pipe network systems have become more complicated, so the requirements for the hydraulic balance adjustment technology of pipe networks are also higher, which makes the distributed frequency conversion transmission technology instead of the regulating valve technology come into being. The distributed frequency conversion transmission technology enhances the adjustability of the system and has a greater potential for energy saving. Performs the theoretical analysis on the heating transmission system, aiming to make the distributed frequency conversion transmission system more widely and effectively in modern intelligent heating systems. Theoretical analysis and calculation results show that, compared with the centralized design method, the application of distributed frequency conversion technology will bring better energy saving effects and gradually highlight its advantages. With the increasing of intelligence level of heating network hydraulic calculation software, the simulation and accessibility analysis of different distributed frequency conversion systems can obtain the optimal transmission design data and improve the transmission energy efficiency of the heating system.
Keywords:distributed transmission and distribution system, centralized heating system, replace valve with pump, energy efficiency improvement, dynamic adjustment