基于CPS在微电网中建模的应用

发布时间：2018-05-03 20:49

本文选题：信息物理融合系统 + 信息模型　；参考：《安徽工程大学》2015年硕士论文

【摘要】：随着各类新型的能源发电技术的发展以及考虑到传统的石化能源的逐渐枯竭和环境保护的角度,人们越来越关注和重视使用清洁能源的分布式发电技术。这里介绍到的微电网技术,它是一种新型的分布式能源的结构以及组织方式,它的运行方式灵活多变,调度性能良好,能够提供安全、高效、可靠地电能。但是为了实现上述发展目标,还需要进一步发展现有电力系统的理论、方法以及模型算法系统,这其中的关键就是实现智能化的电力系统,通过引进新的计算和通信技术,使得电气系统和信息系统的进一步整合。信息物理融合系统(Cyber Physical Systems, CPS)可以用来尝试着解决以上的问题。CPS是集计算、通信和智能控制为多项功能为一体的综合系统,在把物理系统与信息系统进行统一整合之后构成了一个全新分析热点。典型的CPS架构分为四层：(1)物理层(2)通信层(3)处理层(4)应用层。CPS与微电网的联系是未来智能电网发展的方向。微电网CPS作为智能电网的一个方面。开放和共享的信息是智能电网的基础。微网是由许多类型的分布式发电单元、存储能量装置,电力负荷以及微电网的发电调度中心的能源管理单元组成。微网中,存储能量系统对如何稳定控制微网、如何提高微电网的电能质量和连续不间断的电源供应具有特别重要的作用。本文首先介绍了常见微网和分布式电源的类型以及作用。接着描述了光伏电池,蓄电池以及超级电容器的基本原理,并且构建了它们的数学物理模型,最后分析了它们在微电网中的作用,这些是对CPS的物理层进行分析研究。然后先引出了统一规范的IEC 61968国际标准,针对CPS中的信息模型,研究了电力系统的公共信息模型(Common Information Model CIM),CIM采用面向对象建模的电力系统的类结构,在IEC61968标准的基础上,研究CIM的建模方法以及控制机组和分布式电源的CIM,接着对光伏电池、蓄电池、超级电容器的CIM模型进行了扩展,这些工作是是对CPS的信息层进行的分析研究。最后,对于微电网的建模仿真问题,针对微电网中的微电源种类多样且输出特性各异,传统的简易微电源模型所构成的微电网平台很难对现今微电网的研究进行仿真。针对以上情况,搭建了包含的分布式电源为光伏并网逆变器,带超级电容器的大容量能源储存系统(Power Conversion System PCS)以及带蓄电池的大容量能源储存系统(Power Conversion System PCS)的微电网系统,并对其工作过程进行了仿真。为微电网的进一步研究提供了良好的仿真平台。
[Abstract]:With the development of various new energy generation technologies and the perspective of the gradual depletion of traditional fossil energy and environmental protection, people pay more and more attention to the use of clean energy distributed power generation technology. The microgrid technology introduced here is a new type of distributed energy structure and organization. Its operation mode is flexible and changeable, its scheduling performance is good, and it can provide safe, efficient and reliable electric energy. But in order to realize the above development goal, it is necessary to further develop the theory, method and model algorithm system of the existing power system, the key of which is to realize the intelligent power system, through the introduction of new computing and communication technology. Further integration of electrical and information systems. Cyber Physical Systems (CPSs) can be used to solve the above problems. CPS is a comprehensive system which integrates computing, communication and intelligent control. The integration of physical system and information system constitutes a new analysis hotspot. The typical CPS architecture is divided into four layers: 1) physical layer 2) communication layer 3) processing layer 4). The relationship between CPS and microgrid is the development direction of smart grid in the future. Microgrid CPS is an aspect of smart grid. Open and shared information is the foundation of a smart grid. Microgrid is composed of many types of distributed generation units, energy storage devices, power loads and the energy management unit of the power generation dispatching center of the microgrid. In microgrid, energy storage system plays a very important role in how to control microgrid stably, how to improve the power quality of microgrid and how to supply power continuously. This paper first introduces the types and functions of common microgrids and distributed power sources. Then the basic principles of photovoltaic cells, batteries and supercapacitors are described, and their mathematical and physical models are constructed. Finally, their roles in microgrid are analyzed. These are the physical layers of CPS. Then, the unified standard IEC 61968 international standard is introduced. Aiming at the information model in CPS, the common Information Model model of power system is studied, which adopts the class structure of object-oriented modeling of power system. Based on the IEC61968 standard, the class structure of power system is studied. The modeling method of CIM and the CIMs of control unit and distributed power are studied. Then the CIM models of photovoltaic cells, batteries and supercapacitors are extended. These work is to analyze and study the information layer of CPS. Finally, for the problem of modeling and simulation of microgrid, it is very difficult to simulate the research of microgrid in the traditional micro-power model, aiming at the variety of micro-power sources in micro-grid and the different output characteristics. In view of the above situation, the distributed power supply is composed of photovoltaic grid-connected inverter, large capacity energy storage system with super capacitor and power Conversion System PCS) microgrid system with storage battery. The working process is simulated. It provides a good simulation platform for the further research of microgrid.
【学位授予单位】：安徽工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM727

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