城市集中热网远程监控系统设计

发布时间：2019-07-02 21:02

【摘要】：随着经济的快速发展和人民生活水平的提高,城市基础设施建设正在逐渐呈现出高科技、高效率、低能耗、低污染的特点。作为城市基础设施的重要组成部分之一,城市供热系统正在向集约化、智能化、环保方向发展。作为我国北方冬季采暖供热的最主要的形式,相比较分散供热,集中供热具有无污染、损失小、集约高效等优点,在城市中受到广泛认可和应用。集中供热系统主要有人工巡视和自动监控两种运行管理方式,目前仍以人工巡视为主,不仅工作量大、效率低下,而且就地调节的方式非常落后,无法监控整个管网运行状态,极易出现局部水力失调,导致全网的不稳定,供热质量难以保证。课题研究工作针对某一热电公司集中供热管网远程监控系统的设计要求,开展系统结构设计和系统功能实现等研发工作,主要工作包括:(1)基于国家节能减排的政策背景,对城市集中供热系统的组成、现状及调节控制手段进行介绍;并分析存在的问题,提出相应对策,阐明远程监控系统设计实施的必要性。(2)针对城市集中供热系统整体设计问题,在明确系统组成、换热站的结构和工艺基础上,提出了换热站监控系统设计原则、控制中心拓扑结构、整体构架;对Fuzzy-PID控制等换热站常用的控制策略进行介绍。(3)基于“远程给定+本地控制”的思想,对换热站的控制系统功能进行设计,采用气候模型等控制策略,通过数据采集、通讯等功能设计,实现对电动调节阀、补水泵等的运行参数的调节;基于XSys系统软件平台和西门子S7-1200主控制器,对换热站监控系统进行实现;并对原有系统接入控制中心的实现方法进行讨论。(4)以某一热电公司的具体实现为例,对所设计的集中供热管网远程监控系统的实际运行情况进行简要介绍和说明。运行结果显示,该系统运行状态良好,有效确保了供热系统的安全、稳定、节能运行和城市居民的供热需求。
[Abstract]:With the rapid development of economy and the improvement of people's living standard, the construction of urban infrastructure is gradually showing the characteristics of high technology, high efficiency, low energy consumption and low pollution. As one of the important components of urban infrastructure, urban heating system is developing towards intensive, intelligent and environmental protection. As the most important form of winter heating in northern China, compared with decentralized heating, central heating has the advantages of no pollution, small loss, intensive and efficient, and has been widely recognized and applied in cities. There are two main operation and management modes of central heating system: manual inspection and automatic monitoring. At present, manual inspection is still the main mode of operation. Not only the workload is large, the efficiency is low, but also the way of local adjustment is very backward. It is impossible to monitor the operation state of the whole pipe network. It is easy to have local hydraulic imbalance, resulting in instability of the whole network and difficult to ensure the heating quality. According to the design requirements of the remote monitoring system of the central heating network of a thermal power company, the research and development of the system structure design and the realization of the system function are carried out. The main work includes: (1) based on the national policy background of energy saving and emission reduction, the composition, present situation and regulation and control means of the urban central heating system are introduced; The existing problems are analyzed, the corresponding countermeasures are put forward, and the necessity of the design and implementation of the remote monitoring system is expounded. (2) aiming at the overall design of the urban central heating system, on the basis of defining the system composition, the structure and process of the heat exchange station, the design principle of the monitoring system of the heat exchange station, the topological structure of the control center and the overall framework are put forward. This paper introduces the common control strategies of Fuzzy-PID control and other heat transfer stations. (3) based on the idea of "remote given local control", the control system function of heat exchange station is designed, and the operation parameters of electric control valve and replenishment pump are adjusted by using climate model and other control strategies, such as data acquisition, communication and so on. Based on XSys system software platform and Siemens S7 V1200 main controller, the monitoring system of heat exchange station is realized, and the realization method of the original system access control center is discussed. (4) taking the concrete realization of a thermoelectric company as an example, the actual operation of the designed remote monitoring system of central heating network is briefly introduced and explained. The operation results show that the system is in good condition and effectively ensures the safety, stability, energy saving operation and heating demand of urban residents.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU995;TP277

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