【作者】 马玉涛；

【导师】 王晓；

【作者基本信息】 东南大学 ， 制冷及低温工程， 2006， 硕士

【摘要】 随着国民经济的发展,对能源的需求量越来越大,同时伴随着对环境的重视,对能源的品质要求也逐渐提高。在所有能源中,天然气无疑是比较清洁的一种能源。“西气东输”工程的建设,标志着我国天然气工业进入了迅速发展的阶段。随着燃气事业的发展和供气区域的扩大,供气优化调度问题显得尤为重要。为了保证燃气管网的运行安全,提高城市燃气管网供气系统的效率,改善其运行管理水平和用户供气的质量,最大限度的扩大燃气用户数量及类型,提高管网的利用率,本文利用美国国家仪器公司的虚拟测控平台LabVIEW(Laboratory Virtual Instrument Engineering Workbench)。编制了一套燃气管网负荷的虚拟仪器动态监测、优化系统。在此平台上开发的燃气管网负荷动态监测、优化系统软件能够实现全面及时采集到的燃气管网供燃气系统的温度、压力、流量等参数,监测参数变化趋势,建立数据库存储数据,对燃气负荷、压力、温度的上下限的调节控制,实现数据采集、数据监测、数据储存与越限报警等,从而了解各种用户用气特点,及整个管网的负荷特点,并通过建立优化收益和预测数学模型研究如何尽量使燃气管网在满负荷或接近满负荷状态下运行,即负荷曲线平稳,提高燃气管网系统利用率,达到燃气管网系统的优化管理,节能高效的运行。以上研究对解决燃气负荷的时变性和差异性等对燃气管网负荷的影响具有重要意义。仿真软件采用虚拟仪器LabVIEW与数据库等编程语言编制,WINDOWS界面。更多还原

【Abstract】 With the development of the national economy, the demand of the energy is creasing. At the same time, because people pay more attention to the environment ,the requirement about quality of the energy enhance . In all the energy, natural gas undoubtedly is the most clean energy. The project of“natural gas in west area transporting to east area”indicated that our country’s natural gas industry will develop rapidly. The optimization of natural gas pipe network system design is very important to the development and usage of natural gas.In order to ensure the natural gas pipe network system operate safely, enhance the efficiency of the natural gas pipe network system , the level of management and quality of feeding, enlarge the number and sort of the users. We design a virtual instrument monitoring and optimization system in the virtual monitoring and control platform of National Instruments Corporation ,namely LabVIEW ( Laboratory Virtual Instrument Engineering Workbench ) .In this system, a series of parameters such as temperature ,pressure, flow rate can be collected and a database has been built .We can regulate and control the upper and lower limit of the temperature, pressure, flow rate. Through it we can know about the character of all kinds of users and the whole networks . Management and optimized load are realized by using this system and the mathematical model of forecast and the optimization of load .All this allows the natural gas pipe network system to be operated in a higher-efficient and more energy-saving situation.All this research is very important for resolving the problem of how the load variety with time affect the natural gas pipe network system.a virtual instrument monitoring and optimization system is design by LabVIEW and data base, In WINDOWS environment.更多还原