| 引用本文: | 王艳,王阳,赵洪山,陈浩,陈子璇.中压配电物联网架空线-电缆混合线路电力线载波信道建模[J].电力自动化设备,2021,41(1): |
| WANG Yan,WANG Yang,ZHAO Hongshan,CHEN Hao,CHEN Zixuan.PLC channel modeling of medium voltage distribution Internet of Things overhead line-cable hybrid line[J].Electric Power Automation Equipment,2021,41(1): |
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| 摘要: |
| 针对中压配电网架空线与电缆线路混合连接的实际情况，提出了一种基于输入阻抗矩阵的混合型配电物联网电力线载波信道建模方法。首先，分析中压配电网架空线路和电缆线路的结构参数，在多导体传输线理论基础上，推导2类线路的相模变换矩阵，列写传输线的链参数方程；其次，重点分析了各类型配电线路节点连接处的阻抗矩阵关系；然后，根据配电网实际拓扑结构，将配电网划分为不同类型网络分支，给出各类分支输入阻抗矩阵的计算方法，依次求得网络中各节点及信源节点的输入阻抗；最后，由信源节点的输入阻抗与边界条件，结合各传输线的链参数矩阵及各节点的输入阻抗矩阵，求得网络中任意节点的电压向量，实现混合型配电物联网电力线载波信道的建模。理论分析与仿真验证表明了所提建模方法的正确性与有效性。 |
| 关键词: 配电物联网 电力线载波通信 混合线路 多导体传输线 输入阻抗 信道建模 |
| DOI：10.16081/j.epae.202012018 |
| 分类号:TM73 |
| 基金项目:国家自然科学基金资助项目(51807063)；中央高校基本科研业务费专项资金资助项目(2019MS081) |
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| PLC channel modeling of medium voltage distribution Internet of Things overhead line-cable hybrid line |
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WANG Yan, WANG Yang, ZHAO Hongshan, CHEN Hao, CHEN Zixuan
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School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| Aiming at the hybrid connection of overhead lines and cables in MV(Medium Voltage) distribution network, a PLC(Power Line Communication) channel modeling method of hybrid MV D-IoT(Distribution Internet of Things) based on input impedance matrix is proposed. Firstly, the structural parameters of overhead lines and cable lines in MV distribution network are analyzed, the phase-mode transformation matrix of two types of lines is derived based on the theory of multi-conductor transmission line, and the chain-parameter equation of the transmission line is written. Secondly, the impedance matrix relationship at the connection point of various types of distribution lines is emphatically analyzed. According to the actual topology of distribution network, the distribution network is divided into different types of network branch, the calculation method of input impedance matrix of various branches is given, and the input impedance of each node and source node in the network is obtained in sequence. Finally, according to the input impedance and boundary conditions of the source node combined with the chain parameter matrix of each transmis-sion line and the input impedance matrix of each node, the voltage vector of any node in the network is obtained, thereby realizing the channel modeling of PLC for hybrid D-IoT. Theoretical analysis and simulation verification show the correctness and effectiveness of the proposed modeling method. |
| Key words: distribution Internet of Things power line communication hybrid lines multi-conductor transmission lines input impedance channel modeling |
