文档介绍：哈尔滨工业大学工学硕士学位论文
摘要
我国能源形势日益严峻,能源问题已经成为制约我国经济社会发展的瓶颈因
素,为此,国家对各个行业“节能减排”工作也更加重视,并且提出了一系列的
指导方针。城市供水系统是一个城市的耗电大户,而我国的泵站效率普遍较低,
管网设计和布局也不甚合理,因而造成了大量的能量浪费。为此,研究城市供水
系统的节能控制问题对我国具有十分重要的现实和长远意义。
首先,针对某水厂原有控制方式的不合理性,提出了采用变频控制方法来实
现对水厂供水系统的供水控制工作,分析了该方法的节能原因,重点比较了工频
泵组合工作,变频恒压控制和变频调压控制这三种方法的优劣。
其次,为了给节能改造项目提供理论依据,建立了供水系统的能耗数学模型,
模型由全网分配能耗模型和水泵组合能耗模型两部分组成,每个模型都是带有线
性约束和非线性约束的节能寻优问题。并结合实际节能改造项目,利用 Matlab
遗传算法工具箱对所建立的模型进行了实例化仿真研究。
最后,以实际工程项目为背景,针对变频控制具有较好的节能效果和控制效
果,设计了供水系统变频控制器,给出了详细的软硬件设计内容。实践证明,在
该控制器的作用下,为水厂节约了 5%的电能,实现了项目要求。

关键词:供水系统;节能;变频控制;能耗模型

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哈尔滨工业大学工学硕士学位论文
Abstract
The energy situation of our country is increasingly serious and the energy
problem has e the bottleneck factors restricting China's economic and social
development .To this end, our state are also paying more attention to the energy
-saving work in various industries, and has proposed a series of guidelines. Urban
water supply system is one kind of the industries which consume energy highly. In
our country , the efficiency of the pump stations is generally low and the design and
layout of the work is not reasonable, which result in a lot of energy waste. So,
to study the energy-saving control problem of the urban water supply systems in our
state has very important practical and long-term significance.
Firstly, based on the irrationality of the original control method for the water
supply of the water plant, the author decides to use variable-frequency control
method to realize the water supply control . In this paper,the author analyses the
energy-saving reason of this kind of method, focus paring the pros and cons
between three control methods, which are general frequency pump parallel operating ,
variable frequency constant pressure control and variable frequency adjustable
pressure control.
Secondly, in order to provide a theoretical basis for the practical energy-saving
project, establish a mathematical model of the energy cons