文章摘要
郭以贺,霍然,刘欣,等.适用于低压电力线通信的集总参数线缆模型[J].电力系统自动化,2019,43(2):156-161. DOI: 10.7500/AEPS20180608001.
GUO Yihe,HUO Ran,LIU Xin, et al.Lumped Parameter Cable Model for Low Voltage Power Line Communication[J].Automation of Electric Power Systems,2019,43(2):156-161. DOI: 10.7500/AEPS20180608001.
适用于低压电力线通信的集总参数线缆模型
Lumped Parameter Cable Model for Low Voltage Power Line Communication
DOI:10.7500/AEPS20180608001
关键词: 电力线通信  集总参数模型  分布参数模型  矢量匹配法  传输线
KeyWords: power line communication  lumped parameter model  distributed parameter model  vector fitting method  transmission line
上网日期:2018-11-30
基金项目:河北省科技计划资助项目(17211704D);中央高校基本科研业务费专项资金资助项目(2015MS97)
作者单位E-mail
郭以贺 华北电力大学电气与电子工程学院, 河北省保定市 071003 yihe_guo@163.com 
霍然 华北电力大学电气与电子工程学院, 河北省保定市 071003  
刘欣 华北电力大学电气与电子工程学院, 河北省保定市 071003  
谢志远 华北电力大学电气与电子工程学院, 河北省保定市 071003  
仇娟 国网湖北省电力有限公司计量中心, 湖北省武汉市 430014  
摘要:
      为在实验室环境下模拟实际低压电力线缆的信道特性,需要建立电力线通信频段下的线缆集总参数模型。提出了一种通过电磁仿真方法获得分布电阻和电感,以及采用开路阻抗测量方法获得分布电容的方法,在此基础上得到线缆的传输参数并将传输参数转换为Y参数,建立π形等效电路。基于矢量匹配法求解π形电路各支路的无源等效电路,从而建立线缆的集总参数模型。通过对比分布和集总参数模型下传输和阻抗特性的计算结果,证明了集总模型的准确性。所建模型可以通过电路级联模拟各种长度的实际线缆。
Abstract:
      In order to simulate the channel characteristics of actual low voltage power cable in laboratory environment, the lumped parameter cable model should be established under the power line communication band. A method is proposed to obtain the resistance and inductance by electromagnetic simulation and capacitance combined with the method of measuring and calculating distributed capacitances in open circuit tests. And on this basis, the transmission parameters of the cable are obtained. The transmission parameters are converted to Y parameters, and the π-type equivalent circuit is established. Based on the vector matching method, the passive equivalent circuits of each branch of the π-type equivalent circuit are solved, and the lumped parameter cable model is established. By comparing the calculation results of transmission and impedance characteristics with the distributed and lumped parameter models, the accuracy of lumped model is proved. The model can simulate actual cables of various lengths by circuit cascades.
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