电力线通信中传输线参数测试与应用

为了研究电力线载波通信信道的特性,有必要对电力线通信中传输线的电气参数进行实际测试和分析。本文基于耦合传输线理论,模拟实际线路分布情况,对某一具体长度的电力线进行测试,理论推导出该长度的传输线在不同频率的电气参数值。通过对实际测量数据与仿真结果的比较,验证了理论计算的正确性。此外,基于传输线模型建立了电力线通信中各分支线路的模型,Pspice仿真结果基本和测试结果一致,为电力线信道模型的建立及其特性的分析与研究奠定了基础。

Measurement and Application of Electrical Parameters in Power Line Communication

In order to analyze the characteristics of PLC channel,it is necessary to research the electrical parameters of transmission lines by actual testing.Based on coupling transmission line theory,a specific length of power line is tested by simulating the real line distribution,and the electrical parameters at different frequencies are introduced.In comparison with the test value of the simulation results,the accuracy of theoretic calculation is verified.Besides,we establish the model of various branch lines of power communication network based the transmission line model.The results of Pspice simulation are in consistent with the actual tests,which provides a useful theoretical basis for the establishment of PLC network and the analysis of channel characteristics.