【作者】 张雷；

【导师】 庞哈利；

【作者基本信息】 东北大学 ， 系统工程， 2017， 硕士

【摘要】 随着人们生活水平的不断提高,人们对供暖室内温度的舒适度要求也不断提高。供热公司在尽量满足用户需求的同时,也开始响应国家“节能减排”的政策,注重节约热力资源和提高企业效率。因此,对集中供热管网如何进行有效的监控和建立准确的仿真模型就显得尤为重要。在充分调研公司业务和分析用户需求的基础上,对热网监控系统进行了功能模块设计和数据库设计。论文采用基于Visual Studio 2010的面向对象语言C#与数据库SQL Server 2008为系统开发工具,进行热网监控系统的开发,并对系统的开发过程和主要的模块功能进行了详细的介绍。该系统主要包括数据处理与存储、换热站实时监控、参数实时曲线查询、参数历史曲线查询、历史数据查询、值班管理、权限分配、人事管理等功能,供供热系统管理员使用。在系统实现上,采用C/S模式的三层架构,使系统做到简洁易用,具有良好的拓展性和可靠性;采用面向对象的软件开发方法,提高了软件代码的可重用性和易维护性。对于单热源间接供热系统,建立了由热源、换热站、供水网和回水网所组成的空间网络拓扑结构,根据图论理论和相关定律得到热网的水力工况计算模型,计算出各个管段的流量、压降和流速等。在水力工况的基础上,通过分析热网一次网和二次网热损失对工况的影响,在传统模型的基础上建立了新的热力工况计算模型,计算得到热网各节点温度、换热站出口温度等,进而求出整个热网的水力失调度和热力失调度。本文对于建立的水力工况模型和热力工况模型给出了具体的解法,利用计算机进行编程求解,同时根据实际情况给出了具体的算例分析,并与传统的模型进行了比较。针对于本文中的具体算例,利用建立的水力工况模型和热力工况模型,通过各种不同调节方式进行分析比较,找出其规律及优缺点,经过实验和分析对热网给出了具体的综合调节方案,通过建立的模型仿真计算,调节效果良好。更多还原

【Abstract】 With the rapid improvement of living standard,.people’s demand for the indoor heat supply comfort level is continually increasing.The heating companies had done their best to meet customs’ needs,meanwhile they began to respond to the national "energy-saving emission reduction" policy and focused on saving energy resources and improve the efficiency of enterprises,it is necessary to monitor the network and establish an accurate simulation model for centralized network.On the basis of completely investigating the business processes and analysing the requirement,we have designed the function module design and database design for the heating network monitoring system.The system we have developed based on the Visual Studio 2010’s object-oriented programming language C#and SQL Server 2008.This paper has introduced the designing and developing procedure and modular structure for the system.The system include adequate function,such as data processing and storage,real-time parameter curve display,historical parameter curve display,the query of historical data,duty management,power distribution,personnel management and other function.In the part of system’s realization,three-tier C/S structure is used,which makes system user-friendly and has better expansibility and reliability.For a single source of indirect heating system,spatial network topology is established by heat source,heat exchanger station,water supply pipe network and backwater pipe network.According to the graph theory and other law we can get the hydraulic model,and through it we can calculate the pipe flow,pressure drop and water flow speed.On the basis of hydraulic model calculation we can establish the thermal calculation model by thermodynamics and fluid mechanics knowledge,and through it we can calculated the node temperature and exit temperature of heat exchanger station.We give a specific solution for the hydraulic model and thermal calculation model and give an concrete example according to the actual condition,and compared with previous models.An example for the design model in this paper and the establishment,through the analysis of different modes of regulation of the comparison,find out the rules and the advantages and disadvantages,through experiment and analysis of the network gives the comprehensive regulation of the specific program,and achieved good results.更多还原