具有公共屏蔽层的三芯中压电缆通信信道分析  

Communication Channel Analysis of Three-core Medium-voltage Cable with Common Shielding Layer

作　　者：李岩[1] 齐磊杰 刘云鹏[1,2] LI Yan;QI Leijie;LIU Yunpeng(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Hebei Baoding 071003,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《高压电器》2020年第9期101-106,113,共7页High Voltage Apparatus

基　　金：国家重点研发计划(2016YFB0900705);中央高校基本科研业务费专项资金资助(2018MS081)。

摘　　要：线路的信道模型是决定中压载波通信性能的关键因素,具有公共屏蔽的三芯中压电缆形成的信道复杂,互相耦合,传统解析计算困难且不易测量,文章首先利用模态分解方法简化三芯电缆通信信道,简化后的信道之间的信号完全解耦,有利于测量及分析;其次,通过有限元分析方法对三芯电缆的分布参数进行计算,基于文中提出的模态分解方法对计算结果进行变换,得到简化后的三芯电缆信道传输线参数。将得到的结果与实测结果对比,验证了模态分解方法以及分布参数有限元计算的正确性。The channel model of the underground cable is the key factor to determine the performance of medium-voltage power line communication.The three-core structure of the medium-voltage c able is complicated for traditional analytical calculation due to coupling,and not easy to measure.The article uses the modal decomposition method to simplify the communication channel of the three-core cable,the simplified channel are decoupled completely,which is beneficial to measurement and analysis.Finite element analysis is employed to calculate the distribution parameters of the three-core cable.Results are transformed to obtain the simplified three-core cable channel transmission line parameters based on the modal decomposition.The results are compared with the measured results to verify the calculation.

关 键 词：传输线 载波通信 信道建模 有限元 三芯电缆 

分 类 号：TM73[电气工程—电力系统及自动化]