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. 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. 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:河北省科技计划项目(17211704D);中央高校基本科研业务费专项资金(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 yihe_guo@163.com 
霍然 华北电力大学电气与电子工程学院 huoxiaoranran@sina.com 
刘欣 华北电力大学电气与电子工程学院 liuxinhust@163.com 
谢志远 华北电力大学电气与电子工程学院 zhiyuanxie@263.net 
摘要:
      为了在实验室环境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求解分布电阻和电感,结合开路阻抗测量求解分布电容的方法,并在此基础上得到线缆的传输参数。将传输参数转换为Y参数,建立Π型等效电路。基于矢量匹配法求解Π型电路各支路的源等效电路,从而建立一段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,具有结构简单、结果准确和适用广泛的优点。
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 which can solve resistance and inductance by electromagnetic simulation and capacitance by open circuit tests is proposed, and the transmission parameters of the cable are obtained. The transmission parameters are converted to Y parameters, and the Π equivalent circuit is established. Based on the vector matching method, the passive equivalent circuits of each branch of the Π equivalent circuit are solved, and the lumped parameter cable model is established. By comparing the calculation results of transmission and impedance characteristics under 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, and has the advantages of simple structure, accurate results and wide application.
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