低压电力线载波通信零线耦合方法研究  

Research of neutral line coupling method in low voltage power line carrier communication

作　　者：王贤辉 徐鲲鹏 李铮 代洪光 凌志强 WANG Xianhui;XU Kunpeng;LI Zheng;DAI Hongguang;LING Zhiqiang(Beijing SmartChip Microelectronics Technology Co.,Ltd.,Beijing 102200,China;Beijing SmartChip Semiconductor Technology Co.,Ltd.,Beijing 102299,China)

机构地区：[1]北京智芯微电子科技有限公司,北京102200 [2]北京智芯半导体科技有限公司,北京102299

出　　处：《电力科学与技术学报》2023年第4期222-229,共8页Journal of Electric Power Science And Technology

基　　金：国家电网公司科技项目(5600-202013166A-0-0-00)。

摘　　要：针对低压配电台区电力线信道受线路衰减、负载特性等诸多因数影响导致电力线载波通信不稳定的问题,提出一种低压电力线载波通信零线耦合方法。首先,对低压配电台区线路拓扑结构进行分析,阐述低压电力线载波通信零线耦合方法原理,建立电力线载波通信零线耦合的信道模型;然后,采用Matlab软件对电力线载波通信零线耦合的性能进行仿真;最后,结合施工案例对零线耦合模型的准确性及应用效果进行评估。结果表明,在典型5分支重负载线路条件下,零线耦合方法对电力线载波通信信道衰减降低24.9 dB以上;现场施工后对数据抄收成功率提升效果显著,具有安全性高、易施工等诸多优点,可作为低压配电台区电力线载波通信有效的运维手段。Aiming at the instability of low-voltage power line carrier communication(PLC)problem caused by many factors including line attenuation,load characteristics and so on,a neutral line coupling method of low-voltage PLC is proposed in this paper.Firstly,the topological structure of low-voltage distribution area is analyzed.Secondly,the principle of neutral line coupling method of low-voltage PLC is described,and the PLC channel models of neutral line coupling in this paper are established.Then the performance of neutral line coupling of PLC is simulated using Matlab software.Finally,the accuracy and application effect of neutral line coupling is evaluated with practical cases.The results show that the neutral line coupling method in this paper reduces the attenuation of PLC channel by more than 24.9 dB under the typical five branch heavy load line conditions;after on-site construction,the success rate of data acquisition is significantly improved.It has many advantages such as high safety and easy construction,and can be used as an effective operation and maintenance means for PLC in low-voltage distribution area.

关 键 词：低压配电台区 电力线载波 零线耦合 线路衰减 

分 类 号：TN913.6[电子电信—通信与信息系统]