Carrier Channel Model and Analysis of Influencing Factors of Buried Cables in Distribution Network

被引：0
|
作者：
Wang Y. [1 ]
Li Y. [1 ]
Zhao H. [1 ]
Wang Y. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, North China Electric Power University, Baoding, 071003, Hebei Province
来源：
Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Buried cable; Carrier communication; Channel model; Coupling model; Medium voltage distribution network; Transmission characteristics;
D O I：
10.13335/j.1000-3673.pst.2019.1236
中图分类号：
学科分类号：
摘要：
In order to study the transmission characteristics and related influencing factors of the carrier signal in medium voltage distribution network, firstly a coupler mathematical model is derived based on the physical structure and coupling principle of the Embedded inductive coupler. Secondly, the parameter matrix of the cable unit length is analyzed according to the actual structure of the buried cable of the distribution network. The transmission line model of the buried cable is further obtained through diagonalizing the parameter matrix by the loop form and orthogonal transformation. Then the channel model of the carrier signal in the distribution network is established based on the topology of the buried cable of the distribution network and the grounding form of the ring network cabinet. The effectiveness of the buried cable channel model is verified by simulation and laboratory tests. Finally, based on the channel model, the influencing factors affecting the transmission characteristics of the carrier signal in medium voltage buried cable are analyzed. The results show: The carrier signal strength on the cable armor layer is the highest; it takes second on the shield layer; and the smallest is on the three-phase cable core. Each time the cable line passes through a ring network cabinet, its carrier signal strength will show a large attenuation. © 2020, Power System Technology Press. All right reserved.
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页码：2745 / 2753
页数：8
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