基于局部反射理论的中压配电网电力线通信信道建模法

发布时间：2018-03-18 12:06

本文选题：中压配电网　切入点：电力线通信　出处：《电力系统自动化》2017年02期 　论文类型：期刊论文

【摘要】：链路衰减是衡量载波通路传输质量的一项重要指标,为实现对信道衰减特性的预测,提出一种基于局部反射理论的中压配电网电力线通信(PLC)信道建模方法。利用电力线传输理论及局部反射理论,推导端接负载的传输线、不同特性参数的传输线级联情况下的电压传输规律。在此基础上,分别搭建中压配电网无分支线路、带分支线路及带负荷配电变压器线路的PLC信道数学模型。然后根据中压配电网拓扑结构,从配电网末端将所搭模型依次级联至载波信源处,得到末端节点与信源节点间的PLC信道模型,进而分析各节点处载波信号的传输特性。该方法原理简单,计算速度快,可移植性强。仿真及RLC电路实测结果表明了所提建模方法的正确性。
[Abstract]:Link attenuation is an important index to measure the transmission quality of carrier path. A method for modeling power line communication channel in medium voltage distribution network based on local reflection theory is proposed. Using the power line transmission theory and local reflection theory, the transmission line connected with the load is derived. Voltage transmission law of transmission line cascaded with different characteristic parameters. On this basis, no branch line of medium voltage distribution network is built, Mathematical model of PLC channel for branch line and distribution transformer line with load. Then according to the topology of medium voltage distribution network, the model is cascaded from the end of distribution network to the carrier source. The PLC channel model between terminal node and source node is obtained, and the transmission characteristics of carrier signal at each node are analyzed. The results of simulation and RLC circuit test show that the proposed modeling method is correct.
【作者单位】：华北电力大学电气与电子工程学院;
【基金】：中央高校基本科研业务费专项资金资助项目(2016MS90)~~
【分类号】：TM73

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