引用本文:黄银龙,蔡伟,毛涛,等.具有格状网的电力线载波通信信道特性的分析[J].电力系统保护与控制,2014,42(11):1-6.
HUANG Yin-long,CAI Wei,MAO Tao,et al.Analysis of power-line communication channel characteristics of the network with mesh topology[J].Power System Protection and Control,2014,42(11):1-6
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具有格状网的电力线载波通信信道特性的分析
黄银龙1, 蔡伟2, 毛涛1, 汪妮1, 乐健1
1.武汉大学电气工程学院，湖北 武汉 430072;2.国网电力科学研究院，湖北 武汉 430074
摘要:
智能配电网除传统的树状拓扑结构外，还将出现环网、格状网等结构。建立具有这些特殊拓扑配电网的电力线信道模型，并进行信道特性影响因素的分析是在智能配电网中应用电力线载波通信技术的必要前提和重要依据。通过基于信息节点的建模方法建立格状网拓扑的信道模型，并仿真分析前后主干长度、格网主干长度、分支长度、分支负载等因素对格网拓扑下信道传输特性的影响规律，重点分析了这些影响因素对信号衰减的影响。通过实验验证了所得结果的正确性和有效性。所提出的分析方法和所得结论为设计智能配电网电力线载波通信的调制方法提供了必要的理论基础和技术手段。
关键词:  电力线载波通信  格网拓扑  信道传输特性  频率衰减
DOI：10.7667/j.issn.1674-3415.2014.11.001
分类号:
基金项目:国家自然科学基金项目(51007065)
Analysis of power-line communication channel characteristics of the network with mesh topology
HUANG Yin-long1, CAI Wei2, MAO Tao1, WANG Ni1, LE Jian1
1.School of Electrical Engineering, Wuhan University, Wuhan 430072, China;2.State Grid Electric Power Research Institute, Wuhan 430074, China
Abstract:
In the intelligent power distribution network, there are not only tree-topology but also ring-topology, mesh-topology and so on. To establish the power line channel models of the distribution networks with these special topologies and analyse the factors that influence the channel characteristics is the premise and the important basis in application of the PLC in smart distribution network. Based on a universal channel modeling method that is based on information nodes, this paper analyses the influence laws of multiple factors on channel transmission characteristics of the network with mesh topology through simulation, such as the front and rear trunk length, the mesh trunk length, the branch length and the load impedance. The correctness and general applicability of the proposed approach and the conclusions are verified through lab measurements. The proposed analysis method and the conclusions can be used as necessary theoretical basis and technical means to power-line communication modulation method.
Key words:  power-line communication  mesh topology  channel transmission characteristics  frequency attenuation
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