电力线通信与短距离无线通信混合组网研究

发布时间：2018-07-14 11:18

【摘要】：智能电网的发展要求建设可靠稳定、灵活方便的智能电网体系架构。双向、实时可靠的通信网络是智能电网的重要组成部分。电力线通信和微功率无线通信在电力系统中具有广泛的应用前景。其中,电力线通信无需重新布线、安装方便,但是存在噪声源多以及受负载影响大的特点;无线通信安装便捷、不受负载波动,但是存在易受环境因素影响、穿透能力差的特点。电力线通信和无线通信优势互补,研究两种技术混合组网具有一定的实际意义。论文研究了基于中继转发的电力线通信和无线通信混合组网技术,设计并且实现了一个中继通信模块,该模块同时具有电力线通信和Zigbee无线通信的功能模式,可以实现两种通信方式的互补,适用于混合通信组网体系。中继通信模块还具有电力线通信和无线通信的链路指标RSSI的分析与计算功能。中继选择是协作通信领域的关键问题,中继节点的选择将影响系统的性能,因此论文提出了一种基于RSSI的自适应中继选择算法,该算法以RSSI作为通信链路的选择指标,智能选择中继节点以及通信方式。利用完成的中继通信模块搭建了以丢包率为评价指标的硬件测试平台。测试结果显示,中继通信模块利用基于RSSI的自适应中继选择算法,能依据链路的通信质量自适应选择中继节点以及通信方式,提高了混合通信系统的可靠性。最后,针对接收端由于数据冲突而丢失数据的情况,论文给出了基于节点编号的PLC与无线链路选择方案,对基于网络层的电力线与无线通信的数据进行融合,探讨了PLC与无线通信的MAC层融合技术。
[Abstract]:The development of smart grid requires the construction of a reliable, stable, flexible and convenient smart grid architecture. Bi-directional, real-time and reliable communication network is an important part of smart grid. Power line communication and micro-power wireless communication are widely used in power system. Among them, power line communication does not need to be rewired, so it is convenient to install, but it has many noise sources and is greatly affected by load. Wireless communication is easy to install and not subject to load fluctuation, but it is vulnerable to environmental factors. The characteristic of poor penetration. Power line communication and wireless communication complement each other. In this paper, the hybrid network technology of power line communication and wireless communication based on relay forwarding is studied, and a relay communication module is designed and implemented, which has the function mode of power line communication and Zigbee wireless communication at the same time. The two communication modes can complement each other and are suitable for hybrid communication networking system. The relay communication module also has the function of analysis and calculation of link index RSSI for power line communication and wireless communication. Relay selection is a key problem in the field of cooperative communication, and the selection of relay nodes will affect the performance of the system. Therefore, an adaptive relay selection algorithm based on RSSI is proposed, which takes RSSI as the selection index of communication link. Intelligent selection of relay node and communication mode. A hardware test platform based on packet loss rate is built by using the completed relay communication module. The test results show that the relay communication module can adaptively select the relay node and communication mode according to the link communication quality by using the adaptive relay selection algorithm based on RSSI which improves the reliability of the hybrid communication system. Finally, in view of the data loss in the receiver due to data conflict, this paper presents a scheme of selecting PLC and wireless link based on node number, and combines the data of power line and wireless communication based on network layer. The MAC layer fusion technology between PLC and wireless communication is discussed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN913.6;TN92

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