中压电力线载波通信与GPRS互联技术研究

发布时间：2018-01-15 00:20

本文关键词：中压电力线载波通信与GPRS互联技术研究　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：虽然GPRS技术在集中抄表等电力信息传输领域已得到广泛应用。但由于我国配电网覆盖范围广,拓扑结构复杂,导致GPRS集抄系统在偏远地区存在很多盲区。为了提高集抄系统的通信可靠性,扩大通信覆盖范围,通过采用中压电力线载波通信与GPRS技术进行互联是十分必要的。首先分析了电力线载波通信和GPRS技术特点,对基于OFDM的PLC系统进行了仿真,提出了中压电力线载波通信与GPRS互联通信的整体技术方案。整个互联通信系统包括子站终端单元和主站通信单元两部分。子站终端单元采集配电变压器及台区的用电信息,以10k V中压电力线通信方式传输给主站通信单元。主站通信单元以中压电力线载波通信方式实现对线路上各子站通信单元的管理,并将采集的用电信息进行集中,再以GPRS通信方式上传到营销中心。然后以载波芯片SM2200、ARM芯片LPC2138以及GPRS模块MD-609G为核心,设计了子站终端单元以及主站通信单元的硬件系统电路。芯片SM2200采用OFDM调制解调技术,有效地提高了中压电力线通信的可靠性。最后设计了系统的软件,完成了整个通信系统的通信规约的设计与解析、通信主站配置的方法与流程、控制系统的工作流程以及数据的发送与接收。对整个系统进行了测试,运行效果良好可靠。
[Abstract]:Although GPRS technology has been widely used in the field of power information transmission, such as centralized meter reading, but because of the wide coverage of distribution network in China, the topology structure is complex. As a result, there are many blind areas in the remote area of GPRS system. In order to improve the communication reliability of the system, the communication coverage is expanded. It is necessary to interconnect with GPRS by using medium voltage power line carrier communication. Firstly, the characteristics of power line carrier communication and GPRS technology are analyzed. The PLC system based on OFDM is simulated. In this paper, the overall technical scheme of intercommunication between power line carrier communication and GPRS is presented. The whole communication system consists of sub-station terminal unit and main station communication unit. The sub-station terminal unit collects the distribution transformer and the sub-station terminal unit collects and distributes the transformer. Power information for the station area. The communication unit is transmitted to the main station communication unit by 10kV medium voltage power line communication mode. The main station communication unit realizes the management of each sub-station communication unit on the line by the medium voltage power line carrier communication mode. The collected power information is centralized and then uploaded to the marketing center by GPRS communication mode. Then the carrier chip SM2200 is used. ARM chip LPC2138 and GPRS module MD-609G as the core. The hardware system circuit of sub-station terminal unit and master station communication unit is designed. The chip SM2200 adopts OFDM modulation and demodulation technology. Finally, the software of the system is designed, the design and analysis of the communication protocol of the whole communication system, the method and flow of the communication master station configuration are completed. The work flow of the control system and the sending and receiving of the data are carried out. The whole system is tested and the operation effect is good and reliable.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN929.532;TN913.6

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