智能配电台区通信方案研究

发布时间：2019-05-29 08:53

【摘要】：先进的通信技术作为智能配电台区发展的基石,维系着配电台区的可靠运行。随着农村电网不断发展,农村配电台区负荷日益增多,随之产生的通信新业务对现有的通信模式带来新的挑战。目前,我国多数农村配电台区依靠电力线载波(Power Line Carrier,PLC)和RS485传输信号,少数经济发达的农村使用GPRS通信,其中PLC和RS485通信带宽资源小、传输速度小、信号质量差且不能够自由组网;而GPRS公网通信按流量收费,使用成本昂贵,且这三种通信方式都不能支撑配电台区中视频等智能业务,因此需要对农网配电台区通信方式进行改造以提高通信系统的业务能力。由于有线通信在建设成本、可扩展性和自由组网等方面存在的劣势,本文着重分析无线通信在配电台区的应用。综合对比不同的无线通信技术,本文提出了一种基于WiMAX通信的智能配电台区通信方案,该方案利用WiMAX无线通信技术将智能配电台区中各个集中器或配变监测终端的信息上传到控制中心,集中器和配变监测终端通过低压PLC或RS485与用户设备通信。文章详细介绍了WiMAX通信专网的网络架构、各层设备、基站系统的硬件以及WiMAX用户终端器件的设计和选型方案。为了验证WiMAX的通信性能,借助OPNET仿真软件搭建了两个规模不同的台区系统,通过比较两个模型的仿真结果得到:WiMAX的通信的延迟在毫秒级别,且具有良好的网络扩展能力。基于WiMAX的智能配电台区通信专网与传统的配电台区通信方式相比,WiMAX拥有足够的带宽资源支撑视频等智能业务,WiMAX的传输速度远远高于载波通信。相较于3G通信,WiMAX通信在固定接入领域有独特的优势,更加适合终端移动性不强电力系统通信。
[Abstract]:As the cornerstone of the development of intelligent distribution station area, advanced communication technology maintains the reliable operation of distribution station area. With the continuous development of rural power grid, the load of rural distribution station area is increasing day by day, and the resulting new communication service brings new challenges to the existing communication mode. At present, most rural distribution stations in China rely on power line carrier (Power Line Carrier,PLC) and RS485 to transmit signals, and a few economically developed rural areas use GPRS communication, in which PLC and RS485 communication bandwidth resources are small and transmission speed is low. The signal quality is poor and can not be freely connected. However, the GPRS public network communication charges according to the flow rate, the use cost is expensive, and these three communication modes can not support the intelligent service such as video in the distribution station area, so it is necessary to transform the communication mode of the rural network distribution station area in order to improve the service ability of the communication system. Due to the disadvantages of wired communication in construction cost, scalability and free networking, this paper focuses on the application of wireless communication in distribution station area. In this paper, an intelligent distribution station area communication scheme based on WiMAX communication is proposed by comparing different wireless communication technologies. The scheme uses WiMAX wireless communication technology to upload the information of each concentrator or distribution transformer monitoring terminal in the intelligent distribution station area to the control center. The concentrator and the distribution transformer monitoring terminal communicate with the user equipment through low voltage PLC or RS485. This paper introduces in detail the network architecture of WiMAX communication network, the equipment of each layer, the hardware of base station system and the design and selection scheme of WiMAX user terminal device. In order to verify the communication performance of WiMAX, two different scale stations are built with the help of OPNET simulation software. The simulation results of the two models show that the communication delay of WiMAX is in milliseconds and has good network scalability. Compared with the traditional distribution area communication mode, WiMAX has enough bandwidth resources to support intelligent services such as video, and the transmission speed of WiMAX is much faster than that of carrier communication. Compared with 3G communication, WiMAX communication has unique advantages in the field of fixed access, and is more suitable for power system communication with weak terminal mobility.
【学位授予单位】：山东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM76;TM73

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