引用本文: | 王 艳,王 阳,赵洪山,陈子璇,李永亮.中压配电网电力线载波通信信道建模[J].电力系统保护与控制,2021,49(8):50-57.[点击复制] |
WANG Yan,WANG Yang,ZHAO Hongshan,CHEN Zixuan,LI Yongliang.Channel modeling of power line communication in a medium voltage distribution network[J].Power System Protection and Control,2021,49(8):50-57[点击复制] |
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摘要: |
电力线载波通信是智能配电网通信技术的重要选择之一。而中压配电网结构复杂,分支众多,存在电缆-架空线混合型线路,使得载波信号在其上的传输特性难以预估。结合中压配电网结构特点,提出一种载波信号在混合型配电网络中的信道建模方法。首先,在中压配电网的实际拓扑结构及线路类型基础上,定义了载波信号的传输线管道。然后,结合多导体传输线理论和行波理论,推导各传输线管道的传播矩阵及各节点的散射矩阵,并根据网络拓扑关系列写整个网络的电压方程。最后,由电压方程可求得在信源节点激励下全网任意节点的电压响应。该建模方法不受网络拓扑结构及线路类型限制,具有很强的适应性及可移植性。计算及电路仿真结果表明了方法的正确性及有效性。 |
关键词: 智能配电网 电力线载波通信 混合线路 行波理论 信道建模 |
DOI:DOI: 10.19783/j.cnki.pspc.200730 |
投稿时间:2020-06-27修订日期:2020-09-29 |
基金项目:国家自然科学基金项目资助(51807063);中央高校基本科研业务费专项基金项目资助(2019MS081) |
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Channel modeling of power line communication in a medium voltage distribution network |
WANG Yan,WANG Yang,ZHAO Hongshan,CHEN Zixuan,LI Yongliang |
(School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China) |
Abstract: |
Power Line Communication (PLC) is one of the important choices for smart distribution network communication technology. The Medium Voltage (MV) distribution network has complex structure, numerous branches, and cable-overhead mixed lines, which make the transmission characteristics of the carrier signal difficult to predict. Based on the structural characteristics of an MV distribution network, this paper proposes a channel modeling method for carrier signals in mixed distribution networks. First, the transmission line pipeline of the carrier signal is defined based on the actual topology and line type of the MV distribution network. Then, the propagation matrix of each transmission line pipeline and the scattering matrix of each node can be derived based on multi-conductor transmission line theory and traveling wave theory, and the voltage equation of the whole network can be written according to the network topology relationship. Finally, the voltage response of all nodes in the whole network under the excitation of the source node can be obtained by the voltage equation. The modeling method is not restricted by the network topology nor line type, and has strong adaptability and portability. The results of calculation and circuit simulation show the correctness and effectiveness of the method.
This work is supported by the National Natural Science Foundation of China (No. 51807063) and the Fundamental Research Funds for the Central Universities (No. 2019MS081). |
Key words: smart distribution network power line communication mixed lines traveling wave theory channel modeling |